diff options
author | Christophe Bothamy <cbothamy@users.sourceforge.net> | 2002-02-18 10:31:48 +0000 |
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committer | Christophe Bothamy <cbothamy@users.sourceforge.net> | 2002-02-18 10:31:48 +0000 |
commit | 4b4e3d35e7642d9bbca869c3a5645852b0d1dfa3 (patch) | |
tree | 39c5eab2b08c52447c12aec175a180acdc2147c1 | |
download | vgabios-4b4e3d35e7642d9bbca869c3a5645852b0d1dfa3.tar.gz |
- initial import
-rw-r--r-- | BUGS | 9 | ||||
-rw-r--r-- | COPYING | 504 | ||||
-rw-r--r-- | ChangeLog | 28 | ||||
-rw-r--r-- | Makefile | 58 | ||||
-rw-r--r-- | Notes | 11 | ||||
-rw-r--r-- | README | 83 | ||||
-rw-r--r-- | TODO | 41 | ||||
-rwxr-xr-x | dataseghack | 23 | ||||
-rw-r--r-- | tests/testbios.c | 353 | ||||
-rw-r--r-- | vgabios.c | 2318 | ||||
-rw-r--r-- | vgabios.h | 52 | ||||
-rw-r--r-- | vgafonts.h | 784 | ||||
-rw-r--r-- | vgatables.h | 315 |
13 files changed, 4579 insertions, 0 deletions
@@ -0,0 +1,9 @@ +The code is quite new, and testing has been very minimal. +Not all the functions have been implemented yet. + +From an implemented point of view, these should be working but do not : +- 43/50 lines switching +- cursor shape seems broken (volker) + + +Please report any bugs to <cbothamy@free.fr> @@ -0,0 +1,504 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. It also counts + as the successor of the GNU Library Public License, version 2, hence + the version number 2.1.] + + Preamble + + The licenses for most software are designed to take away your +freedom to share and change it. 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Fixed bug in function ah=13 + +vgabios-0.2a + - "Christophe Bothamy" <cbothamy@free.fr>: Nov 09 2001 + . Included bugfix from techt@pikeonline.net about grayscale summing + . Added the "IBM" string at org 0x1e as Bart Oldeman suggested + . Fixed DS and ES that where inverted in the int10 parameters list! + . The following have been implemented : + - function ax=1a00, ax=1a01, ah=1b + - function ax=1130 + . Added debug messages for unimplemented/unknown functions + Must be compiled with DEBUG defined. The output is trapped + by the unknown-ioport driver of plex/bochs (port 0xfff0 is used) + +vgabios-0.1a + - "Christophe Bothamy" <cbothamy@free.fr>: May 8 2001 + . First release. The work has been focused only on text mode. + . The following have been implemented : + - inits + - int 10 handler + - functions ah=00, ah=01, ah=02, ah=03, ah=05, ah=06, ah=07, ah=08 + ah=09, ah=0a, ah=0e, ah=0f, ax=1000, ax=1001, ax=1002, ax=1003 + ax=1007, ax=1008, ax=1009, ax=1010, ax=1012, ax=1013, ax=1015 + ax=1017, ax=1018, ax=1019, ax=101a, ax=101b, ah=12 bl=10, + ah=12 bl=30, ah=12 bl=31, ah=12 bl=32, ah=12 bl=33, ah=12 bl=34 + ah=13 diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..fb4ab07 --- /dev/null +++ b/Makefile @@ -0,0 +1,58 @@ +SHELL = /bin/sh + +CC = gcc +CFLAGS = -g -O2 -Wall -Wstrict-prototypes +LDFLAGS = + +RELEASE = `pwd | sed "s-.*/--"` +RELDATE = `date '+%d %b %Y'` + +all: bios + + +bios: vgabios.bin vgabios.debug.bin + +clean: + /bin/rm -f *.o *.s *.ld86 \ + temp.awk.* vgabios*.orig _vgabios_*.c core vgabios*.bin $(RELEASE).bin + +dist-clean: clean + +release: bios + /bin/rm -f *.o *.s *.ld86 \ + temp.awk.* vgabios.*.orig _vgabios_.*.c core + cp vgabios.bin ../$(RELEASE).bin + cp vgabios.debug.bin ../$(RELEASE).debug.bin + rm vgabios.bin + rm vgabios.debug.bin + tar czvf ../$(RELEASE).tgz -C .. $(RELEASE)/ + +vgabios.bin: vgabios.o + ld86 -0 -r -o vgabios vgabios.o + tools86 vgabios + dd if=vgabios of=vgabios.bin ibs=32 skip=1 count=1024 + rm -f vgabios _vgabios_.c + ls -l vgabios.bin + +vgabios.o: vgabios.c vgabios.h vgafonts.h vgatables.h + gcc -E vgabios.c -DVGABIOS_DATE="\"$(RELDATE)\"" | tools86 -E > _vgabios_.c + /usr/lib/bcc/bcc-cc1 -o vgabios.s -c -D__i86__ -0 _vgabios_.c + ./dataseghack vgabios.s + # bug : with -j i get 1 byte displacement at the end of bin file ! + #as86 vgabios.s -o vgabios.o -u -w -g -0 -j + as86 vgabios.s -o vgabios.o -u -w -g -0 + + +vgabios.debug.bin: vgabios.debug.o + ld86 -0 -r -o vgabios.debug vgabios.debug.o + tools86 vgabios.debug + dd if=vgabios.debug of=vgabios.debug.bin ibs=32 skip=1 count=1024 + rm -f vgabios.debug _vgabios_.debug.c + ls -l vgabios.debug.bin + +vgabios.debug.o: vgabios.c vgabios.h vgafonts.h vgatables.h + gcc -E vgabios.c -DDEBUG -DVGABIOS_DATE="\"$(RELDATE)\"" | tools86 -E > _vgabios_.debug.c + /usr/lib/bcc/bcc-cc1 -o vgabios.debug.s -c -D__i86__ -0 _vgabios_.debug.c + ./dataseghack vgabios.debug.s + as86 vgabios.debug.s -o vgabios.debug.o -u -w -g -0 + @@ -0,0 +1,11 @@ +Development notes +----------------- + +- need to split video init function + 1. set bios variables + 2. do the real init with io based on bios variables + +- characters format switching will set the bios + variables and call function #2 above + +- need to rework the tables as explained in Interrupt list @@ -0,0 +1,83 @@ +Plex86/Bochs VGABios +-------------------- + +The goal of this project is to have a LGPL'd Video Bios in plex86 +and bochs. +This VGA Bios is very specific to the emulated VGA card. +It is NOT meant to drive a physical vga card. + + +Install +------- +To compile the VGA Bios you will need : +- gcc +- bcc +- as86 +- ld86 + +Untar the archive, and type make. You should get a "vgabios.bin" file. +Alternatively, you can use the binary file "vgabios-XXX.bin", i have +compiled for you. + +Edit your plex86/bochs conf file, and modify the load-rom command in the +VGA BIOS section, to point to the new vgabios.bin file. + + +Debugging +--------- +You can get a very basic debugging system: messages printed by the vgabios. +You have to register the "unmapped" device driver in plex86 or bochs, and make +sure it grabs port 0xfff0. + +Comment the #undef DEBUG at the beginning of vgabios.c. +You can then use the "printf" function in the bios. + + +Testing +------- +Look at the "testvga.c" file in the archive. This is a minimal Turbo C 2.0 +source file that calls a few int10 functions. Feel free to modify it to suit +your needs. +The VGA Bios in its current version has been very little tested. + + +Copyright and License +--------------------- +This program has been written by Christophe Bothamy +It is protected by the GNU Lesser Public License, which you should +have received a copy of along with this package. + + +Reverse Engineering +------------------- +The VGA Bios has been written without reverse-engineering any existing Bios. + + +Acknowledgment +-------------- +The source code contains code ripped from rombios.c of plex86, written +by Kevin Lawton <kevin2001@yahoo.com> + +The source code contains fonts from fntcol16.zip (c) by Joseph Gil avalable at : +ftp://ftp.simtel.net/pub/simtelnet/msdos/screen/fntcol16.zip +These fonts are public domain + +The source code is based on information taken from : +- Kevin Lawton's vga card emulation for bochs/plex86 +- Ralf Brown's interrupts list avalaible at + http://www.cs.cmu.edu/afs/cs/user/ralf/pub/WWW/files.html +- Finn Thogersons' VGADOC4b available at http://home.worldonline.dk/~finth/ +- Michael Abrash's Graphics Programming Black Book +- Francois Gervais' book "programmation des cartes graphiques cga-ega-vga" + edited by sybex +- DOSEMU 1.0.1 source code for several tables values and formulas + + +Feedback +-------- +Please report any bugs, comments, patches for this VGA Bios to cbothamy@free.fr + +You can find the latest release at : http://cbothamy.free.fr/projects/vgabios/ + +For any information on plex86, visit the website http://www.plex86.org/ +For any information on bochs, visit the website http://bochs.sourceforge.net/ @@ -0,0 +1,41 @@ +Short term : +------------ + +General + - Fix init mode (ah=00). Should use more BIOS variables + - Add new functionalities and modify static functionality table + - Performance : 16 bits IO + +v0.3 + - Implement the remaining functions : + - chargen ax=1100, ax=1101, ax=1102, ax=1103, ax=1104, ax=1110, + ax=1111, ax=1112, ax=1120, ax=1121, ax=1122, ax=1123, ax=1124 + +v0.4 + - Reimplement the tables so it is compatible with the video save pointer table + - Implement the remaining functions (don't know if all are needed): + - set border ah=0b bh=00, set cga palette ah=0b bh=01, + - display switch interface ah=12 bl=35 + - video refresh control ah=12 bl=36 + - save/restore state ah=1c + +v0.5 + - Graphic modes + - Implement the remaining functions : + - read/write graphic pixel ah=0c, ah=0d, + +v1.0 + - Bugfixes + + +Long term : +----------- + +v2.0 + - upload the fonts to the "card" memory + - display fonts from the "card" memory (plex86/bochs vga card needs update) + +v3.0 + - vesa bios (plex86/bochs vga card needs update) + - frame buffer/SDL display + diff --git a/dataseghack b/dataseghack new file mode 100755 index 0000000..5d2aca6 --- /dev/null +++ b/dataseghack @@ -0,0 +1,23 @@ +#!/bin/sh + +awk \ + 'BEGIN { }\ + /^\.text/,/DATA_SEG_DEFS_HERE/ { print }\ + END { }'\ + $1 > temp.awk.1 + +awk \ + 'BEGIN { i = 0; last = "hello" }\ + /BLOCK_STRINGS_BEGIN/,/^\.bss/ { if ( i > 1 ) { print last } last = $0; i = i + 1 }\ + END { }'\ + $1 > temp.awk.2 + +awk \ + 'BEGIN { }\ + /DATA_SEG_DEFS_HERE/,/BLOCK_STRINGS_BEGIN/ { print }\ + END { }'\ + $1 > temp.awk.3 + +cp $1 $1.orig +cat temp.awk.1 temp.awk.2 temp.awk.3 | sed -e 's/^\.data//' -e 's/^\.bss//' -e 's/^\.text//' > $1 +/bin/rm -f temp.awk.1 temp.awk.2 temp.awk.3 $1.orig diff --git a/tests/testbios.c b/tests/testbios.c new file mode 100644 index 0000000..99da5a6 --- /dev/null +++ b/tests/testbios.c @@ -0,0 +1,353 @@ +/*
+ This is a little turbo C program that executes
+ several int10, and let you inspect the content
+ of the vgabios area
+
+ It is used to test the behavior of the vgabios
+*/
+
+#include <stdio.h>
+#include <dos.h>
+#include <conio.h>
+
+
+typedef unsigned char Bit8u;
+typedef unsigned short Bit16u;
+
+typedef struct
+{Bit8u initial;
+ Bit8u current;
+ Bit16u nbcols;
+ Bit16u regen;
+ Bit16u start;
+ Bit16u curpos[8];
+ Bit8u curtyp;
+ Bit8u curpage;
+ Bit16u crtc;
+ Bit16u msr;
+ Bit16u cgapal;
+ Bit8u nbrows;
+ Bit16u cheight;
+ Bit8u ctl;
+ Bit8u switches;
+ Bit8u modeset;
+ Bit8u dcc;
+ Bit16u vsseg;
+ Bit16u vsoffset;
+} BIOSAREA;
+
+void int10ax0003(struct REGPACK *regs)
+{
+ regs->r_ax=0x0003;
+ intr(0x10,regs);
+}
+
+void int10ax02(struct REGPACK *regs)
+{
+ regs->r_ax=0x0200;
+ regs->r_bx=0x0000;
+ regs->r_dx=0x1710;
+ intr(0x10,regs);
+ printf("We are now at 24/17");
+}
+
+void int10ax03(struct REGPACK *regs)
+{
+ regs->r_ax=0x0300;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+ printf("\nCursor is ax%04x cx%04x dx%04x\n",regs->r_ax,regs->r_cx,regs->r_dx);
+}
+
+void int10ax0501(struct REGPACK *regs)
+{
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x0e61;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+ printf("We are now on page 2");
+}
+
+void int10ax0602(struct REGPACK *regs)
+{
+ regs->r_ax=0x0602;
+ regs->r_bx=0x0700;
+ regs->r_cx=0x0101;
+ regs->r_dx=0x0a0a;
+ intr(0x10,regs);
+ printf("Scrolled 2 up");
+}
+
+void int10ax0702(struct REGPACK *regs)
+{
+ regs->r_ax=0x0702;
+ regs->r_bx=0x0700;
+ regs->r_cx=0x0101;
+ regs->r_dx=0x0a0a;
+ intr(0x10,regs);
+ printf("Scrolled 2 down");
+}
+
+void int10ax08(struct REGPACK *regs)
+{
+ regs->r_ax=0x0800;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+}
+
+void int10ax09(struct REGPACK *regs)
+{
+ char attr;
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ for(attr=0;attr<16;attr++)
+ {printf("%02x ",attr);
+ regs->r_ax=0x0961+attr;
+ regs->r_bx=0x0100+attr;
+ regs->r_cx=0x0016;
+ intr(0x10,regs);
+ printf("\n");
+ }
+}
+
+void int10ax0a(struct REGPACK *regs)
+{
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x0a62;
+ regs->r_bx=0x0101;
+ regs->r_cx=0x0016;
+ intr(0x10,regs);
+}
+
+void int10ax0f(struct REGPACK *regs)
+{
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x0f00;
+ intr(0x10,regs);
+}
+
+void int10ax1b(struct REGPACK *regs)
+{unsigned char table[64];
+ unsigned char far *ptable;
+ int i;
+
+ regs->r_ax=0x0501;
+ intr(0x10,regs);
+ regs->r_ax=0x1b00;
+ regs->r_bx=0x0000;
+ ptable=&table;
+ regs->r_es=FP_SEG(ptable);
+ regs->r_di=FP_OFF(ptable);
+ printf("Read state info in %04x:%04x\n",regs->r_es,regs->r_di);
+ intr(0x10,regs);
+
+ for(i=0;i<64;i++)
+ {if(i%16==0)printf("\n%02x ",i);
+ printf("%02x ",table[i]);
+ }
+ printf("\n");
+}
+
+static unsigned char var[64];
+
+void int10ax13(struct REGPACK *regs)
+{unsigned char far *pvar;
+
+ pvar=&var;
+
+ regs->r_ax=0x1300;
+ regs->r_bx=0x000b;
+ regs->r_dx=0x1010;
+ regs->r_cx=0x0002;
+ regs->r_es=FP_SEG(pvar);
+ regs->r_bp=FP_OFF(pvar);
+ pokeb(regs->r_es,regs->r_bp,'t');
+ pokeb(regs->r_es,regs->r_bp+1,'b');
+ printf("Writing from %04x:%04x\n",regs->r_es,regs->r_bp);
+ intr(0x10,regs);
+
+}
+
+void switch_50(struct REGPACK *regs)
+{
+ regs->r_ax=0x1202;
+ regs->r_bx=0x3000;
+ intr(0x10,regs);
+ regs->r_ax=0x0003;
+ intr(0x10,regs);
+ regs->r_ax=0x1112;
+ regs->r_bx=0x0000;
+ intr(0x10,regs);
+}
+
+char exec_function(struct REGPACK *regs)
+{char c;
+
+ printf("--- Functions --------------------\n");
+ printf("a. int10 ax0003\t");
+ printf("b. int10 ax02\t");
+ printf("c. int10 ax03\t");
+ printf("d. int10 ax0501\n");
+ printf("e. int10 ax0602\t");
+ printf("f. int10 ax0702\t");
+ printf("g. int10 ax08\t");
+ printf("h. int10 ax09\t");
+ printf("i. int10 ax0a\n");
+ printf("j. int10 ax0f\t");
+ printf("k. int10 ax1b\t");
+ printf("l. int10 ax13\n");
+ printf("q. Quit\t");
+ printf("r. switch to 50 lines\n");
+ c=getche();
+
+ switch(c)
+ {case 'a':
+ int10ax0003(regs);
+ break;
+ case 'b':
+ int10ax02(regs);
+ break;
+ case 'c':
+ int10ax03(regs);
+ break;
+ case 'd':
+ int10ax0501(regs);
+ break;
+ case 'e':
+ int10ax0602(regs);
+ break;
+ case 'f':
+ int10ax0702(regs);
+ break;
+ case 'g':
+ int10ax08(regs);
+ break;
+ case 'h':
+ int10ax09(regs);
+ break;
+ case 'i':
+ int10ax0a(regs);
+ break;
+ case 'j':
+ int10ax0f(regs);
+ break;
+ case 'k':
+ int10ax1b(regs);
+ break;
+ case 'l':
+ int10ax13(regs);
+ break;
+ case 'q':
+ break;
+ case 'r':
+ switch_50(regs);
+ break;
+ default:
+ printf("No such function!\n");
+ }
+
+ if(c=='q')return 1;
+ while(kbhit()==0);
+ c=getch();
+
+ return 0;
+}
+
+void read_bios_area(BIOSAREA *biosarea)
+{
+ biosarea->initial=peekb(0x40,0x10);
+ biosarea->current=peekb(0x40,0x49);
+ biosarea->nbcols=peek(0x40,0x4a);
+ biosarea->regen=peek(0x40,0x4c);
+ biosarea->start=peek(0x40,0x4e);
+ biosarea->curpos[0]=peek(0x40,0x50);
+ biosarea->curpos[1]=peek(0x40,0x52);
+ biosarea->curpos[2]=peek(0x40,0x54);
+ biosarea->curpos[3]=peek(0x40,0x56);
+ biosarea->curpos[4]=peek(0x40,0x58);
+ biosarea->curpos[5]=peek(0x40,0x5a);
+ biosarea->curpos[6]=peek(0x40,0x5c);
+ biosarea->curpos[7]=peek(0x40,0x5e);
+ biosarea->curtyp=peek(0x40,0x60);
+ biosarea->curpage=peekb(0x40,0x62);
+ biosarea->crtc=peek(0x40,0x63);
+ biosarea->msr=peekb(0x40,0x65);
+ biosarea->cgapal=peekb(0x40,0x66);
+ biosarea->nbrows=peekb(0x40,0x84);
+ biosarea->cheight=peek(0x40,0x85);
+ biosarea->ctl=peekb(0x40,0x87);
+ biosarea->switches=peekb(0x40,0x88);
+ biosarea->modeset=peekb(0x40,0x89);
+ biosarea->dcc=peekb(0x40,0x8a);
+ biosarea->vsseg=peek(0x40,0xa8);
+ biosarea->vsoffset=peek(0x40,0xaa);
+}
+
+void show_bios_area(BIOSAREA *biosarea)
+{
+ printf("--- BIOS area --------------------\n");
+ printf("initial : %02x\t",biosarea->initial);
+ printf("current : %02x\t",biosarea->current);
+ printf("nbcols : %04x\t",biosarea->nbcols);
+ printf("regen : %04x\t",biosarea->regen);
+ printf("start : %04x\n",biosarea->start);
+ printf("curpos : %04x %04x %04x %04x %04x %04x %04x %04x\n",
+ biosarea->curpos[0], biosarea->curpos[1], biosarea->curpos[2], biosarea->curpos[3],
+ biosarea->curpos[4], biosarea->curpos[5], biosarea->curpos[6], biosarea->curpos[7]);
+ printf("curtyp : %04x\t",biosarea->curtyp);
+ printf("curpage : %02x\t",biosarea->curpage);
+ printf("crtc : %04x\t",biosarea->crtc);
+ printf("msr : %04x\n",biosarea->msr);
+ printf("cgapal : %04x\t",biosarea->cgapal);
+ printf("nbrows-1: %02x\t",biosarea->nbrows);
+ printf("cheight : %04x\t",biosarea->cheight);
+ printf("ctl : %02x\n",biosarea->ctl);
+ printf("switches: %02x\t",biosarea->switches);
+ printf("modeset : %02x\t",biosarea->modeset);
+ printf("dcc : %02x\t",biosarea->dcc);
+ printf("vs : %04x:%04x\n",biosarea->vsseg,biosarea->vsoffset);
+}
+
+void show_regs(struct REGPACK *regs)
+{
+ printf("--- Registers --------------------\n");
+ printf("ax %04x\t",regs->r_ax);
+ printf("bx %04x\t",regs->r_bx);
+ printf("cx %04x\t",regs->r_cx);
+ printf("dx %04x\t",regs->r_dx);
+ printf("ds %04x\t",regs->r_ds);
+ printf("si %04x\t",regs->r_si);
+ printf("es %04x\t",regs->r_es);
+ printf("di %04x\n",regs->r_di);
+}
+
+void reset_videomode()
+{
+ struct REGPACK regs;
+
+ regs.r_ax=0x0003;
+ intr(0x10,®s);
+}
+
+void main()
+{
+
+ BIOSAREA biosarea;
+ struct REGPACK regs;
+
+ directvideo=0;
+
+ while(1)
+ {
+ read_bios_area(&biosarea);
+
+ reset_videomode();
+ show_bios_area(&biosarea);
+ show_regs(®s);
+
+ if(exec_function(®s)!=0)break;
+ }
+}
diff --git a/vgabios.c b/vgabios.c new file mode 100644 index 0000000..3daba7e --- /dev/null +++ b/vgabios.c @@ -0,0 +1,2318 @@ +// ============================================================================================ +/* + * vgabios.c + */ +// ============================================================================================ +// +// Copyright (C) 2001 Christophe Bothamy +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +// +// ============================================================================================ +// +// This VGA Bios is specific to the plex86/bochs Emulated VGA card. +// You can NOT drive any physical vga card with it. +// +// ============================================================================================ +// +// This file contains code ripped from : +// - rombios.c of plex86 +// +// This VGA Bios contains fonts from : +// - fntcol16.zip (c) by Joseph Gil avalable at : +// ftp://ftp.simtel.net/pub/simtelnet/msdos/screen/fntcol16.zip +// These fonts are public domain +// +// This VGA Bios is based on information taken from : +// - Kevin Lawton's vga card emulation for bochs/plex86 +// - Ralf Brown's interrupts list available at http://www.cs.cmu.edu/afs/cs/user/ralf/pub/WWW/files.html +// - Finn Thogersons' VGADOC4b available at http://home.worldonline.dk/~finth/ +// - Michael Abrash's Graphics Programming Black Book +// - Francois Gervais' book "programmation des cartes graphiques cga-ega-vga" edited by sybex +// - DOSEMU 1.0.1 source code for several tables values and formulas +// +// Thanks for patches, comments and ideas to : +// - techt@pikeonline.net +// +// ============================================================================================ + +#include "vgabios.h" + +/* Declares */ +static Bit8u read_byte(); +static Bit16u read_word(); +static void write_byte(); +static void write_word(); +static Bit8u inb(); +static void outb(); +static Bit16u get_SS(); + +// Output +static void printf(); +static void unimplemented(); +static void unknown(); + +static void init_vga_card(); +static void init_bios_area(); + +static Bit8u find_vga_entry(); + +static void memsetb(); +static void memsetw(); +static void memcpyb(); +static void memcpyw(); + +static void biosfn_set_video_mode(); +static void biosfn_set_cursor_shape(); +static void biosfn_set_cursor_pos(); +static void biosfn_get_cursor_pos(); +static void biosfn_set_active_page(); +static void biosfn_scroll(); +static void biosfn_read_char_attr(); +static void biosfn_write_char_attr(); +static void biosfn_write_char_only(); +static void biosfn_set_border_color(); +static void biosfn_set_palette(); +static void biosfn_write_pixel(); +static void biosfn_read_pixel(); +static void biosfn_write_teletype(); +static void biosfn_get_video_mode(); +static void biosfn_set_single_palette_reg(); +static void biosfn_set_overscan_border_color(); +static void biosfn_set_all_palette_reg(); +static void biosfn_toggle_intensity(); +static void biosfn_get_single_palette_reg(); +static void biosfn_read_overscan_border_color(); +static void biosfn_get_all_palette_reg(); +static void biosfn_set_single_dac_reg(); +static void biosfn_set_all_dac_reg(); +static void biosfn_select_video_dac_color_page(); +static void biosfn_read_single_dac_reg(); +static void biosfn_read_all_dac_reg(); +static void biosfn_set_pel_mask(); +static void biosfn_read_pel_mask(); +static void biosfn_read_video_dac_state(); +static void biosfn_perform_gray_scale_summing(); +static void biosfn_load_text_user_pat(); +static void biosfn_load_text_8_14_pat(); +static void biosfn_load_text_8_8_pat(); +static void biosfn_set_text_block_specifier(); +static void biosfn_load_text_8_16_pat(); +static void biosfn_load_gfx_8_8_chars(); +static void biosfn_load_gfx_user_chars(); +static void biosfn_load_gfx_8_14_chars(); +static void biosfn_load_gfx_8_8_dd_chars(); +static void biosfn_load_gfx_8_16_chars(); +static void biosfn_get_font_info(); +static void biosfn_get_ega_info(); +static void biosfn_alternate_prtsc(); +static void biosfn_select_vert_res(); +static void biosfn_enable_default_palette_loading(); +static void biosfn_enable_video_addressing(); +static void biosfn_enable_grayscale_summing(); +static void biosfn_enable_cursor_emulation(); +static void biosfn_switch_video_interface(); +static void biosfn_enable_video_refresh_control(); +static void biosfn_write_string(); +static void biosfn_read_display_code(); +static void biosfn_set_display_code(); +static void biosfn_read_state_info(); +static void biosfn_read_video_state_size(); +static void biosfn_save_video_state(); +static void biosfn_restore_video_state(); + +#asm +.text +.rom +.org 0 + +vgabios_start: +.byte 0x55, 0xaa /* BIOS signature, required for BIOS extensions */ + +.byte 0x40 /* BIOS extension length in units of 512 bytes */ + + +vgabios_entry_point: + + JMPL(vgabios_init_func) + +vgabios_name: +.ascii "Plex86/Bochs VGABios" +.byte 0x00 + +// Info from Bart Oldeman +.org 0x1e +.ascii "IBM" +.byte 0x00 + +vgabios_version: +.ascii "v0.3a" +.byte 0x00 + +vgabios_date: +.ascii VGABIOS_DATE +.byte 0x00 + +vgabios_copyright: +.ascii "(C) 2001 Christophe Bothamy <cbothamy@free.fr>" +.byte 0x00 + +vgabios_license: +.ascii "This VGA Bios is released under the GNU LGPL" +.byte 0x00 + +vgabios_website: +.ascii "Please visit :" +.byte 0x0a,0x0d +.ascii " . http://www.plex86.org" +.byte 0x0a,0x0d +.ascii " . http://bochs.sourceforge.net" +.byte 0x0a,0x0d +.ascii " . http://cbothamy.free.fr/projects/vgabios" +.byte 0x00 + + +;; ============================================================================================ +;; +;; Init Entry point +;; +;; ============================================================================================ +vgabios_init_func: + +;; init vga card + call _init_vga_card + +;; init basic bios vars + call _init_bios_area + +;; set int10 vect + SET_INT_VECTOR(0x10, #0xC000, #vgabios_int10_handler) + +;; display splash screen + call _display_splash_screen + +;; init video mode and clear the screen + mov ax,#0x0003 + int #0x10 + +;; show info + call _display_info + + retf +#endasm + +/* + * int10 handled here + */ +#asm +vgabios_int10_handler: + pushf + push es + push ds + pusha + +;; We have to set ds to access the right data segment + mov bx, #0xc000 + mov ds, bx + call _int10_func + + popa + pop ds + pop es + popf + iret +#endasm + +#include "vgatables.h" +#include "vgafonts.h" + +/* + * Boot time harware inits + */ +static void init_vga_card() +{ +#asm +;; switch to color mode and enable CPU access 480 lines + mov dx, #0x3C2 + mov al, #0xC3 + outb dx,al + +;; more than 64k 3C4/04 + mov dx, #0x3C4 + mov al, #0x04 + outb dx,al + +;; + mov dx, #0x3C5 + mov al, #0x02 + outb dx,al + +#endasm +} + +// -------------------------------------------------------------------------------------------- +/* + * Boot time bios area inits + */ +static void init_bios_area() +{ + // init detected hardware BIOS Area + write_word(BIOSMEM_SEG,BIOSMEM_INITIAL_MODE,read_word(BIOSMEM_SEG,BIOSMEM_INITIAL_MODE)&0xFFCF); + + // Just for the first int10 find its children + + // the default chat height + write_byte(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,16); + + // Clear the screen + write_byte(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL,0x60); + + // Set the basic screen we have + write_byte(BIOSMEM_SEG,BIOSMEM_SWITCHES,0xF9); + + // Set the basic modeset options + write_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL,0x51); + + // Set the default MSR + write_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,0x09); +} + +// -------------------------------------------------------------------------------------------- +/* + * Boot time Splash screen + */ +static void display_splash_screen() +{ +} + +// -------------------------------------------------------------------------------------------- +/* + * Tell who we are + */ + +#asm +crlf: + .byte 0x0a,0x0d,0x00 +space: + .ascii " " + .byte 0x00 +#endasm + +static void display_info() +{ +#asm + mov ax,#0xc000 + mov ds,ax + mov si,#vgabios_name + call _display_string + mov si,#space + call _display_string + mov si,#vgabios_version + call _display_string + mov si,#space + call _display_string + mov si,#vgabios_date + call _display_string + mov si,#crlf + call _display_string + mov si,#vgabios_copyright + call _display_string + mov si,#crlf + call _display_string + + mov si,#vgabios_license + call _display_string + mov si,#crlf + call _display_string + mov si,#crlf + call _display_string + mov si,#vgabios_website + call _display_string + mov si,#crlf + call _display_string + mov si,#crlf + call _display_string +#endasm +} + +static void display_string() +{ + // Get length of string +#asm + mov ax,ds + mov es,ax + mov di,si + xor cx,cx + not cx + xor al,al + cld + repne + scasb + not cx + dec cx + push cx + + mov ax,#0x0300 + mov bx,#0x0000 + int #0x10 + + pop cx + mov ax,#0x1301 + mov bx,#0x000b + mov bp,si + int #0x10 +#endasm +} + +// -------------------------------------------------------------------------------------------- + +// -------------------------------------------------------------------------------------------- +/* + * int10 main dispatcher + */ +static void int10_func(DI, SI, BP, SP, BX, DX, CX, AX, DS, ES, FLAGS) + Bit16u DI, SI, BP, SP, BX, DX, CX, AX, ES, DS, FLAGS; +{ +#ifdef DEBUG + // 0E is write char... + if(GET_AH()!=0x0E) + printf("vgabios call ah%02x al%02x bx%04x cx%04x dx%04x\n",GET_AH(),GET_AL(),BX,CX,DX); +#endif + + // BIOS functions + switch(GET_AH()) + { + case 0x00: + biosfn_set_video_mode(GET_AL()); + switch(GET_AL()&0x7F) + {case 6: + SET_AL(0x3F); + break; + case 0: + case 1: + case 2: + case 3: + case 4: + case 5: + case 7: + SET_AL(0x30); + break; + default: + SET_AL(0x20); + } + break; + case 0x01: + biosfn_set_cursor_shape(GET_CH(),GET_CL()); + break; + case 0x02: + biosfn_set_cursor_pos(GET_BH(),DX); + break; + case 0x03: + biosfn_get_cursor_pos(GET_BH(),&CX,&DX); + break; + case 0x04: + // Read light pen pos (unimplemented) +#ifdef DEBUG + unimplemented(); +#endif + AX=0x00; + BX=0x00; + CX=0x00; + DX=0x00; + break; + case 0x05: + biosfn_set_active_page(GET_AL()); + break; + case 0x06: + biosfn_scroll(GET_AL(),GET_BH(),GET_CH(),GET_CL(),GET_DH(),GET_DL(),0xFF,SCROLL_UP); + break; + case 0x07: + biosfn_scroll(GET_AL(),GET_BH(),GET_CH(),GET_CL(),GET_DH(),GET_DL(),0xFF,SCROLL_DOWN); + break; + case 0x08: + biosfn_read_char_attr(GET_BH(),&AX); + break; + case 0x09: + biosfn_write_char_attr(GET_AL(),GET_BH(),GET_BL(),CX); + break; + case 0x0A: + biosfn_write_char_only(GET_AL(),GET_BH(),GET_BL(),CX); + break; + case 0x0B: + if(GET_BH()==0x00) + biosfn_set_border_color(GET_BL()); + else + biosfn_set_palette(GET_BL()); + break; + case 0x0C: + biosfn_write_pixel(GET_BH(),GET_AL(),CX,DX); + break; + case 0x0D: + biosfn_read_pixel(GET_BH(),CX,DX,&AX); + break; + case 0x0E: + // Ralf Brown Interrupt list is WRONG on bh(page) + // We do output only on the current page ! + biosfn_write_teletype(GET_AL(),0xff,GET_BL(),NO_ATTR); + break; + case 0x0F: + biosfn_get_video_mode(&AX,&BX); + break; + case 0x10: + switch(GET_AL()) + { + case 0x00: + biosfn_set_single_palette_reg(GET_BL(),GET_BH()); + break; + case 0x01: + biosfn_set_overscan_border_color(GET_BH()); + break; + case 0x02: + biosfn_set_all_palette_reg(ES,DX); + break; + case 0x03: + biosfn_toggle_intensity(GET_BL()); + break; + case 0x07: + biosfn_get_single_palette_reg(GET_BL(),&BX); + break; + case 0x08: + biosfn_read_overscan_border_color(&BX); + break; + case 0x09: + biosfn_get_all_palette_reg(ES,DX); + break; + case 0x10: + biosfn_set_single_dac_reg(BX,GET_CH(),GET_CL(),GET_DL()); + break; + case 0x12: + biosfn_set_all_dac_reg(BX,CX,ES,DX); + break; + case 0x13: + biosfn_select_video_dac_color_page(GET_BL(),GET_BH()); + break; + case 0x15: + biosfn_read_single_dac_reg(GET_BL(),&DX,&CX); + break; + case 0x17: + biosfn_read_all_dac_reg(BX,CX,ES,DX); + break; + case 0x18: + biosfn_set_pel_mask(GET_BL()); + break; + case 0x19: + biosfn_read_pel_mask(&BX); + break; + case 0x1A: + biosfn_read_video_dac_state(&BX); + break; + case 0x1B: + biosfn_perform_gray_scale_summing(BX,CX); + break; +#ifdef DEBUG + default: + unknown(); +#endif + } + break; + case 0x11: + switch(GET_AL()) + { + case 0x00: + case 0x10: + biosfn_load_text_user_pat(GET_AL(),ES,BP,CX,DX,GET_BL(),GET_BH()); + break; + case 0x01: + case 0x11: + biosfn_load_text_8_14_pat(GET_AL(),GET_BL()); + break; + case 0x02: + case 0x12: + biosfn_load_text_8_8_pat(GET_AL(),GET_BL()); + break; + case 0x03: + biosfn_set_text_block_specifier(GET_BL()); + break; + case 0x04: + case 0x14: + biosfn_load_text_8_16_pat(GET_AL(),GET_BL()); + break; + case 0x20: + biosfn_load_gfx_8_8_chars(ES,BP); + break; + case 0x21: + biosfn_load_gfx_user_chars(ES,BP,CX,GET_BL(),GET_DL()); + break; + case 0x22: + biosfn_load_gfx_8_14_chars(GET_BL()); + break; + case 0x23: + biosfn_load_gfx_8_8_dd_chars(GET_BL()); + break; + case 0x24: + biosfn_load_gfx_8_16_chars(GET_BL()); + break; + case 0x30: + biosfn_get_font_info(GET_BH(),&ES,&BP,&CX,&DX); + break; +#ifdef DEBUG + default: + unknown(); +#endif + } + + break; + case 0x12: + switch(GET_BL()) + { + case 0x10: + biosfn_get_ega_info(&BX,&CX); + break; + case 0x20: + biosfn_alternate_prtsc(); + break; + case 0x30: + biosfn_select_vert_res(GET_AL()); + SET_AL(0x12); + break; + case 0x31: + biosfn_enable_default_palette_loading(GET_AL()); + SET_AL(0x12); + break; + case 0x32: + biosfn_enable_video_addressing(GET_AL()); + SET_AL(0x12); + break; + case 0x33: + biosfn_enable_grayscale_summing(GET_AL()); + SET_AL(0x12); + break; + case 0x34: + biosfn_enable_cursor_emulation(GET_AL()); + SET_AL(0x12); + break; + case 0x35: + biosfn_switch_video_interface(GET_AL(),ES,DX); + SET_AL(0x12); + break; + case 0x36: + biosfn_enable_video_refresh_control(GET_AL()); + SET_AL(0x12); + break; +#ifdef DEBUG + default: + unknown(); +#endif + } + break; + case 0x13: + biosfn_write_string(GET_AL(),GET_BH(),GET_BL(),CX,GET_DH(),GET_DL(),ES,BP); + break; + case 0x1A: + switch(GET_AL()) + { + case 0x00: + biosfn_read_display_code(&BX); + break; + case 0x01: + biosfn_set_display_code(GET_BL(),GET_BH()); + break; +#ifdef DEBUG + default: + unknown(); +#endif + } + SET_AL(0x1A); + break; + case 0x1B: + biosfn_read_state_info(BX,ES,DI); + SET_AL(0x1B); + break; + case 0x1C: + switch(GET_AL()) + { + case 0x00: + biosfn_read_video_state_size(CX,&BX); + break; + case 0x01: + biosfn_save_video_state(CX,ES,BX); + break; + case 0x02: + biosfn_restore_video_state(CX,ES,BX); + break; +#ifdef DEBUG + default: + unknown(); +#endif + } + SET_AL(0x1C); + break; +#ifdef DEBUG + default: + unknown(); +#endif + } +} + +// ============================================================================================ +// +// BIOS functions +// +// ============================================================================================ + +static void biosfn_set_video_mode(mode) Bit8u mode; +{// mode: Bit 7 is 1 if no clear screen + + // Should we clear the screen ? + Bit8u noclearmem=mode&0x80; + Bit8u line,*palette; + Bit16u i,twidth,theight,cheight; + Bit8u modeset_ctl,video_ctl,vga_switches; + Bit16u crtc_addr; + + // The real mode + mode=mode&0x7f; + + // find the entry in the video modes + line=find_vga_entry(mode); + +#ifdef DEBUG + printf("mode search %02x found line %02x\n",mode,line); +#endif + + if(line==0xFF) + return; + + twidth=vga_modes[line].twidth; + theight=vga_modes[line].theight; + cheight=vga_modes[line].cheight; + + // Read the bios vga control + video_ctl=read_byte(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL); + + // Read the bios vga switches + vga_switches=read_byte(BIOSMEM_SEG,BIOSMEM_SWITCHES); + + // Read the bios mode set control + modeset_ctl=read_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL); + + // Then we know the number of lines +// FIXME + + // if palette loading (bit 3 of modeset ctl = 0) + if((modeset_ctl&0x08)==0) + {// Set the PEL mask + outb(VGAREG_PEL_MASK,vga_modes[line].pelmask); + + // Set the whole dac always, from 0 + outb(VGAREG_DAC_WRITE_ADDRESS,0x00); + + // From which palette + switch(vga_modes[line].dacmodel) + {case 0: + palette=&palette0; + break; + case 1: + palette=&palette1; + break; + case 2: + palette=&palette2; + break; + case 3: + palette=&palette3; + break; + } + } + + // Always 256*3 values + for(i=0;i<0x0100;i++) + {if(i<=dac_regs[vga_modes[line].dacmodel]) + {outb(VGAREG_DAC_DATA,palette[(i*3)+0]); + outb(VGAREG_DAC_DATA,palette[(i*3)+1]); + outb(VGAREG_DAC_DATA,palette[(i*3)+2]); + } + else + {outb(VGAREG_DAC_DATA,0); + outb(VGAREG_DAC_DATA,0); + outb(VGAREG_DAC_DATA,0); + } + } + + // Set Attribute Ctl + for(i=0;i<=ACTL_MAX_REG;i++) + {outb(VGAREG_ACTL_ADDRESS,i); + outb(VGAREG_ACTL_WRITE_DATA,actl_regs[vga_modes[line].actlmodel][i]); + } + + // Set Sequencer Ctl + for(i=0;i<=SEQU_MAX_REG;i++) + {outb(VGAREG_SEQU_ADDRESS,i); + outb(VGAREG_SEQU_DATA,sequ_regs[vga_modes[line].sequmodel][i]); + } + + // Set Grafx Ctl + for(i=0;i<=GRDC_MAX_REG;i++) + {outb(VGAREG_GRDC_ADDRESS,i); + outb(VGAREG_GRDC_DATA,grdc_regs[vga_modes[line].grdcmodel][i]); + } + + // Set CRTC address VGA or MDA + crtc_addr=vga_modes[line].memmodel==MTEXT?VGAREG_MDA_CRTC_ADDRESS:VGAREG_VGA_CRTC_ADDRESS; + + // Set CRTC regs + for(i=0;i<=CRTC_MAX_REG;i++) + {outb(crtc_addr,i); + outb(crtc_addr+1,crtc_regs[vga_modes[line].crtcmodel][i]); + } + + // Set the misc register + outb(VGAREG_WRITE_MISC_OUTPUT,vga_modes[line].miscreg); + + // Enable video + outb(VGAREG_ACTL_ADDRESS,0x20); + inb(VGAREG_ACTL_RESET); + + if(noclearmem==0x00) + {if(vga_modes[line].class==TEXT) + { + memsetw(vga_modes[line].sstart,0,0x0720,0x4000); // 32k + } + else + {// FIXME should handle gfx mode + } + } + + // Set the BIOS mem + write_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE,mode|noclearmem); + write_word(BIOSMEM_SEG,BIOSMEM_NB_COLS,twidth); + write_word(BIOSMEM_SEG,BIOSMEM_PAGE_SIZE,vga_modes[line].slength); + write_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS,crtc_addr); + write_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS,theight-1); + write_word(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,cheight); + write_byte(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL,(0x60|noclearmem)); + write_byte(BIOSMEM_SEG,BIOSMEM_SWITCHES,0xF9); + write_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL,read_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL)&0x7f); + + // FIXME We nearly have the good tables. to be reworked + write_byte(BIOSMEM_SEG,BIOSMEM_DCC_INDEX,0x08); // 8 is VGA should be ok for now + write_word(BIOSMEM_SEG,BIOSMEM_VS_POINTER,0x00); + write_word(BIOSMEM_SEG,BIOSMEM_VS_POINTER+2,0x00); + + // FIXME + write_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,0x00); // Unavailable on vanilla vga, but... + write_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_PAL,0x00); // Unavailable on vanilla vga, but... + + // Set cursor shape + if(vga_modes[line].class==TEXT) + {biosfn_set_cursor_shape(0x06,0x07); + } + + // Set cursor pos for page 0..7 + for(i=0;i<8;i++) + biosfn_set_cursor_pos(i,0x0000); + + // Set active page 0 + biosfn_set_active_page(0x00); + + // Write the fonts in memory +// FIXME + + // Set the ints 0x1F and 0x43 +#asm + SET_INT_VECTOR(0x1f, #0xC000, #vgafont8+128*8) +#endasm + + switch(cheight) + {case 8: +#asm + SET_INT_VECTOR(0x43, #0xC000, #vgafont8) +#endasm + break; + case 14: +#asm + SET_INT_VECTOR(0x43, #0xC000, #vgafont14) +#endasm + break; + case 16: +#asm + SET_INT_VECTOR(0x43, #0xC000, #vgafont16) +#endasm + break; + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_cursor_shape (CH,CL) +Bit8u CH;Bit8u CL; +{Bit16u curs; + + CH&=0x3f; + CL&=0x1f; + + // FIXME should remap to vga settings in case of 14/16 lines + curs=(CH<<8)+CL; + write_word(BIOSMEM_SEG,BIOSMEM_CURSOR_TYPE,curs); + + // CTRC regs 0x0a and 0x0b + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0a); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,CH); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0b); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,CL); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_cursor_pos (page, cursor) +Bit8u page;Bit16u cursor; +{ + Bit8u xcurs,ycurs,current; + Bit16u nbcols,nbrows,address; + + // Should not happen... + if(page>7)return; + + // Bios cursor pos + write_word(BIOSMEM_SEG, BIOSMEM_CURSOR_POS+2*page, cursor); + + // Set the hardware cursor + current=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE); + if(page==current) + { + // Get the dimensions + nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1; + + xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8; + + // Calculate the address knowing nbcols nbrows and page num + address=SCREEN_IO_START(nbcols,nbrows,page)+xcurs+ycurs*nbcols; + + // CRTC regs 0x0e and 0x0f + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0e); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,(address&0xff00)>>8); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0f); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,address&0x00ff); + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_get_cursor_pos (page,shape, pos) +Bit8u page;Bit16u *shape;Bit16u *pos; +{ + Bit16u ss=get_SS(); + + // Default + write_word(ss, shape, 0); + write_word(ss, pos, 0); + + if(page>7)return; + // FIXME should handle VGA 14/16 lines + write_word(ss,shape,read_word(BIOSMEM_SEG,BIOSMEM_CURSOR_TYPE)); + write_word(ss,pos,read_word(BIOSMEM_SEG,BIOSMEM_CURSOR_POS+page*2)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_active_page (page) +Bit8u page; +{ + Bit16u cursor,dummy; + Bit16u nbcols,nbrows,address; + + if(page>7)return; + + // Get pos curs pos for the right page + biosfn_get_cursor_pos(page,&dummy,&cursor); + + // Get the dimensions + nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1; + + // Calculate the address knowing nbcols nbrows and page num + address=SCREEN_MEM_START(nbcols,nbrows,page); + write_word(BIOSMEM_SEG,BIOSMEM_CURRENT_START,address); + + // Start address + address=SCREEN_IO_START(nbcols,nbrows,page); + + // CRTC regs 0x0c and 0x0d + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0c); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,(address&0xff00)>>8); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS),0x0d); + outb(read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)+1,address&0x00ff); + + // And change the BIOS page + write_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE,page); + +#ifdef DEBUG + printf("Set active page %02x address %04x\n",page,address); +#endif + + // Display the cursor, now the page is active + biosfn_set_cursor_pos(page,cursor); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_scroll (nblines,attr,rul,cul,rlr,clr,page,dir) +Bit8u nblines;Bit8u attr;Bit8u rul;Bit8u cul;Bit8u rlr;Bit8u clr;Bit8u page;Bit8u dir; +{ + // page == 0xFF if current + + Bit8u mode,line; + Bit16u nbcols,nbrows,i; + Bit16u address; + + if(rul>rlr)return; + if(cul>clr)return; + + // Get the mode + mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE); + line=find_vga_entry(mode); + if(line==0xFF)return; + + // Get the dimensions + nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1; + nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + + // Get the current page + if(page==0xFF) + page=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE); + + // Compute the address + address=SCREEN_MEM_START(nbcols,nbrows,page); +#ifdef DEBUG + printf("Scroll, address %04x (%04x %04x %02x)\n",address,nbrows,nbcols,page); +#endif + + if(rlr>=nbrows)rlr=nbrows-1; + if(clr>=nbcols)clr=nbcols-1; + if(nblines>nbrows)nblines=0; + + if(nblines==0&&rul==0&&cul==0&&rlr==nbrows-1&&clr==nbcols-1) + { + memsetw(vga_modes[line].sstart,address,(Bit16u)attr*0x100+' ',nbrows*nbcols); + } + else + {// if Scroll up + if(dir==SCROLL_UP) + {for(i=rul;i<=rlr;i++) + { + if((i+nblines>rlr)||(nblines==0)) + memsetw(vga_modes[line].sstart,address+(i*nbcols+cul)*2,(Bit16u)attr*0x100+' ',clr-cul+1); + else + memcpyw(vga_modes[line].sstart,address+(i*nbcols+cul)*2,vga_modes[line].sstart,((i+nblines)*nbcols+cul)*2,clr-cul+1); + } + } + else + {for(i=rlr;i>=rul;i--) + { + if((i<rul+nblines)||(nblines==0)) + memsetw(vga_modes[line].sstart,address+(i*nbcols+cul)*2,(Bit16u)attr*0x100+' ',clr-cul+1); + else + memcpyw(vga_modes[line].sstart,address+(i*nbcols+cul)*2,vga_modes[line].sstart,((i-nblines)*nbcols+cul)*2,clr-cul+1); + } + } + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_char_attr (page,car) +Bit8u page;Bit16u *car; +{Bit16u ss=get_SS(); + Bit8u xcurs,ycurs,mode,line; + Bit16u nbcols,nbrows,address; + Bit16u cursor,dummy; + + // FIXME gfx mode + + // Get the mode + mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE); + line=find_vga_entry(mode); + if(line==0xFF)return; + + // Get the cursor pos for the page + biosfn_get_cursor_pos(page,&dummy,&cursor); + xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8; + + // Get the dimensions + nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1; + nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + + // Compute the address + address=SCREEN_MEM_START(nbcols,nbrows,page)+(xcurs+ycurs*nbcols)*2; + + write_word(ss,car,read_word(vga_modes[line].sstart,address)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_write_char_attr (car,page,attr,count) +Bit8u car;Bit8u page;Bit8u attr;Bit16u count; +{ + Bit8u xcurs,ycurs,mode,line; + Bit16u nbcols,nbrows,address; + Bit16u cursor,dummy; + + // FIXME gfx mode + + // Get the mode + mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE); + line=find_vga_entry(mode); + if(line==0xFF)return; + + // Get the cursor pos for the page + biosfn_get_cursor_pos(page,&dummy,&cursor); + xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8; + + // Get the dimensions + nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1; + nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + + // Compute the address + address=SCREEN_MEM_START(nbcols,nbrows,page)+(xcurs+ycurs*nbcols)*2; + + dummy=((Bit16u)attr<<8)+car; + memsetw(vga_modes[line].sstart,address,dummy,count); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_write_char_only (car,page,attr,count) +Bit8u car;Bit8u page;Bit8u attr;Bit16u count; +{ + Bit8u xcurs,ycurs,mode,line; + Bit16u nbcols,nbrows,address; + Bit16u cursor,dummy; + + // FIXME gfx mode + + // Get the mode + mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE); + line=find_vga_entry(mode); + if(line==0xFF)return; + + // Get the cursor pos for the page + biosfn_get_cursor_pos(page,&dummy,&cursor); + xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8; + + // Get the dimensions + nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1; + nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + + // Compute the address + address=SCREEN_MEM_START(nbcols,nbrows,page)+(xcurs+ycurs*nbcols)*2; + + while(count-->0) + {write_byte(vga_modes[line].sstart,address,car); + address+=2; + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_border_color (BL) Bit8u BL; +// FIXME anybody using this function ? +{ +#ifdef DEBUG + unimplemented(); +#endif +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_palette (BL) Bit8u BL; +// FIXME anybody using this function ? +{ +#ifdef DEBUG + unimplemented(); +#endif +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_write_pixel (BH,AL,CX,DX) Bit8u BH;Bit8u AL;Bit16u CX;Bit16u DX; +// FIXME anybody using this function ? +{ +#ifdef DEBUG + unimplemented(); +#endif +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_pixel (BH,CX,DX,AX) Bit8u BH;Bit16u CX;Bit16u DX;Bit16u *AX; +// FIXME anybody using this function ? +{ +#ifdef DEBUG + unimplemented(); +#endif +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_write_teletype (car, page, attr, flag) +Bit8u car;Bit8u page;Bit8u attr;Bit8u flag; +{// flag = WITH_ATTR / NO_ATTR + + Bit8u xcurs,ycurs,mode,line; + Bit16u nbcols,nbrows,address; + Bit16u cursor,dummy; + + // special case if page is 0xff, use current page + if(page==0xff) + page=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE); + + // FIXME gfx mode + + // Get the mode + mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE); + line=find_vga_entry(mode); + if(line==0xFF)return; + + // Get the cursor pos for the page + biosfn_get_cursor_pos(page,&dummy,&cursor); + xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8; + + // Get the dimensions + nbrows=read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)+1; + nbcols=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + + switch(car) + { + case 7: + //FIXME should beep + break; + + case 8: + if(xcurs>0)xcurs--; + break; + + case '\r': + xcurs=0; + break; + + case '\n': + xcurs=0; + ycurs++; + break; + + case '\t': + do + { + biosfn_write_teletype(' ',page,attr,flag); + biosfn_get_cursor_pos(page,&dummy,&cursor); + xcurs=cursor&0x00ff;ycurs=(cursor&0xff00)>>8; + }while(xcurs%8==0); + break; + + default: + // Compute the address + address=SCREEN_MEM_START(nbcols,nbrows,page)+(xcurs+ycurs*nbcols)*2; + + // Write the char + write_byte(vga_modes[line].sstart,address,car); + + if(flag==WITH_ATTR) + write_byte(vga_modes[line].sstart,address+1,attr); + + xcurs++; + } + + // Do we need to wrap ? + if(xcurs==nbcols) + {xcurs=0; + ycurs++; + } + + // Do we need to scroll ? + if(ycurs==nbrows) + {biosfn_scroll(0x01,0x07,0,0,nbrows-1,nbcols-1,page,SCROLL_UP); + ycurs-=1; + } + + // Set the cursor for the page + cursor=ycurs; cursor<<=8; cursor+=xcurs; + biosfn_set_cursor_pos(page,cursor); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_get_video_mode (AX,BX) +Bit16u *AX;Bit16u *BX; +{Bit16u ss=get_SS(); + Bit8u mode,page; + Bit16u nbcars; + + page=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE); + mode=read_byte(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE); + nbcars=read_word(BIOSMEM_SEG,BIOSMEM_NB_COLS); + + write_word(ss,AX,(nbcars<<8)+mode); + write_word(ss,BX,((Bit16u)page)<<8); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_single_palette_reg (reg,value) +Bit8u reg;Bit8u value; +{ + if(reg<=ACTL_MAX_REG) + { + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,reg); + outb(VGAREG_ACTL_WRITE_DATA,value); + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_overscan_border_color (value) +Bit8u value; +{ + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x11); + outb(VGAREG_ACTL_WRITE_DATA,value); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_all_palette_reg (seg,offset) +Bit16u seg;Bit16u offset; +{ + Bit8u i; + + inb(VGAREG_ACTL_RESET); + // First the colors + for(i=0;i<=0x10;i++) + { + outb(VGAREG_ACTL_ADDRESS,i); + outb(VGAREG_ACTL_WRITE_DATA,read_byte(seg,offset)); + offset++; + } + + // Then the border + outb(VGAREG_ACTL_ADDRESS,0x11); + outb(VGAREG_ACTL_WRITE_DATA,read_byte(seg,offset)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_toggle_intensity (state) +Bit8u state; +{Bit8u value; + state&=0x01; + inb(VGAREG_ACTL_RESET); + + outb(VGAREG_ACTL_ADDRESS,0x10); + value=inb(VGAREG_ACTL_READ_DATA); + value&=0xf7; + value|=state<<3; + + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x10); + outb(VGAREG_ACTL_WRITE_DATA,value); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_get_single_palette_reg (reg,value) +Bit8u reg;Bit16u *value; +{Bit16u ss=get_SS(); + + if(reg<=ACTL_MAX_REG) + { + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,reg); + write_word(ss,value,((Bit16u)inb(VGAREG_ACTL_READ_DATA))<<8); + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_overscan_border_color (value) +Bit16u *value; +{Bit16u ss=get_SS(); + + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x11); + write_word(ss,value,((Bit16u)inb(VGAREG_ACTL_READ_DATA))<<8); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_get_all_palette_reg (seg,offset) Bit16u seg;Bit16u offset; +{ + Bit8u i; + + inb(VGAREG_ACTL_RESET); + // First the colors + for(i=0;i<=0x10;i++) + { + outb(VGAREG_ACTL_ADDRESS,i); + write_byte(seg,offset,inb(VGAREG_ACTL_READ_DATA)); + offset++; + } + + // Then the border + outb(VGAREG_ACTL_ADDRESS,0x11); + write_byte(seg,offset,inb(VGAREG_ACTL_READ_DATA)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_single_dac_reg (reg,g,b,r) +Bit16u reg;Bit8u g;Bit8u b;Bit8u r; +{ + outb(VGAREG_DAC_WRITE_ADDRESS,reg); + outb(VGAREG_DAC_DATA,r); + outb(VGAREG_DAC_DATA,g); + outb(VGAREG_DAC_DATA,b); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_all_dac_reg (start,count,seg,offset) +Bit16u start;Bit16u count;Bit16u seg;Bit16u offset; +{Bit8u i; + outb(VGAREG_DAC_WRITE_ADDRESS,start); + for(i=0;i<count;i++) + {outb(VGAREG_DAC_DATA,read_byte(seg,offset++)); + outb(VGAREG_DAC_DATA,read_byte(seg,offset++)); + outb(VGAREG_DAC_DATA,read_byte(seg,offset++)); + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_select_video_dac_color_page (function,page) +Bit8u function; +{Bit8u value; + + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x10); + + value=inb(VGAREG_ACTL_READ_DATA); + function&=0x01; + if(function==0) + {// 4 of 64 + value&=0x7f; + value|=function<<7; + + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x10); + outb(VGAREG_ACTL_WRITE_DATA,value); + } + else + {// 16 of 16 + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x14); + if(value&0x80) + outb(VGAREG_ACTL_WRITE_DATA,page&0x0f); + else + outb(VGAREG_ACTL_WRITE_DATA,(page&0x03)<<2); + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_single_dac_reg (reg,tor,togb) +Bit8u reg;Bit16u *tor;Bit16u *togb; +{Bit16u ss=get_SS(); + Bit8u r,g,b; + + outb(VGAREG_DAC_READ_ADDRESS,reg); + r=inb(VGAREG_DAC_DATA); + g=inb(VGAREG_DAC_DATA); + b=inb(VGAREG_DAC_DATA); + write_word(ss,tor,((Bit16u)r)<<8); + write_word(ss,togb,(((Bit16u)g)<<8)+b); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_all_dac_reg (start,count,seg,offset) +Bit16u start;Bit16u count;Bit16u seg;Bit16u offset; +{Bit8u i; + outb(VGAREG_DAC_READ_ADDRESS,start); + for(i=0;i<count;i++) + {write_byte(seg,offset++,inb(VGAREG_DAC_DATA)); + write_byte(seg,offset++,inb(VGAREG_DAC_DATA)); + write_byte(seg,offset++,inb(VGAREG_DAC_DATA)); + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_pel_mask (mask) +Bit8u mask; +{ + outb(VGAREG_PEL_MASK,mask); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_pel_mask (mask) +Bit16u *mask; +{Bit16u ss=get_SS(); + + write_word(ss,mask,inb(VGAREG_PEL_MASK)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_video_dac_state (state) Bit16u *state; +{Bit16u ss=get_SS(); + Bit8u mcr,csr; + + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x10); + mcr=(inb(VGAREG_ACTL_READ_DATA)>>7)&0x01; + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x14); + csr=inb(VGAREG_ACTL_READ_DATA)&0x0f; + if(mcr==0)(csr>>2)&0x03; + + write_word(ss,state,(mcr<<8)+csr); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_perform_gray_scale_summing (start,count) +Bit16u start;Bit16u count; +{Bit8u index,r,g,b,d; + Bit16u i,m; + + inb(VGAREG_ACTL_RESET); + outb(VGAREG_ACTL_ADDRESS,0x10); + d=(inb(VGAREG_ACTL_READ_DATA)>>6)&0x01; + + // depth is 8 or 6 bits + if(d==0)m=0x3f; + else m=0xff; + + + // We start overwriting at + outb(VGAREG_DAC_READ_ADDRESS,start); + outb(VGAREG_DAC_WRITE_ADDRESS,start); + + for( index = 0; index < count; index++ ) + { + // get 6-bit wide RGB data values + r=inb( VGAREG_DAC_DATA ); + g=inb( VGAREG_DAC_DATA ); + b=inb( VGAREG_DAC_DATA ); + + // intensity = ( 0.3 * Red ) + ( 0.59 * Green ) + ( 0.11 * Blue ) + i = ( ( 77*r + 151*g + 28*b ) + 0x80 ) >> 8; + + if(i>m)i=m; + + // write new intensity value + outb( VGAREG_DAC_DATA, i&0xff ); + outb( VGAREG_DAC_DATA, i&0xff ); + outb( VGAREG_DAC_DATA, i&0xff ); + } +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_load_text_user_pat (AL,ES,BP,CX,DX,BL,BH) Bit8u AL;Bit16u ES;Bit16u BP;Bit16u CX;Bit16u DX;Bit8u BL;Bit8u BH; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_text_8_14_pat (AL,BL) Bit8u AL;Bit8u BL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_text_8_8_pat (AL,BL) Bit8u AL;Bit8u BL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_set_text_block_specifier (BL) Bit8u BL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_text_8_16_pat (AL,BL) Bit8u AL;Bit8u BL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_gfx_8_8_chars (ES,BP) Bit16u ES;Bit16u BP; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_gfx_user_chars (ES,BP,CX,BL,DL) Bit16u ES;Bit16u BP;Bit16u CX;Bit8u BL;Bit8u DL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_gfx_8_14_chars (BL) Bit8u BL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_gfx_8_8_dd_chars (BL) Bit8u BL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_load_gfx_8_16_chars (BL) Bit8u BL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +// -------------------------------------------------------------------------------------------- +static void biosfn_get_font_info (BH,ES,BP,CX,DX) +Bit8u BH;Bit16u *ES;Bit16u *BP;Bit16u *CX;Bit16u *DX; +{Bit16u ss=get_SS(); + + switch(BH) + {case 0x00: + write_word(ss,ES,read_word(0x00,0x1f*4)); + write_word(ss,BP,read_word(0x00,(0x1f*4)+2)); + break; + case 0x01: + write_word(ss,ES,read_word(0x00,0x43*4)); + write_word(ss,BP,read_word(0x00,(0x43*4)+2)); + break; + case 0x02: + write_word(ss,ES,0xC000); + write_word(ss,BP,vgafont14); + break; + case 0x03: + write_word(ss,ES,0xC000); + write_word(ss,BP,vgafont8); + break; + case 0x04: + write_word(ss,ES,0xC000); + write_word(ss,BP,vgafont8+128*8); + break; + case 0x05: + write_word(ss,ES,0xC000); + write_word(ss,BP,vgafont14alt); + break; + case 0x06: + write_word(ss,ES,0xC000); + write_word(ss,BP,vgafont16); + break; + case 0x07: + write_word(ss,ES,0xC000); + write_word(ss,BP,vgafont16alt); + break; + default: + #ifdef DEBUG + printf("Get font info BH(%02x) was discarded\n",BH); + #endif + return; + } + // Set byte/char of on screen font + write_word(ss,DX,(Bit16u)read_byte(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT)); + + // Set Highest char row + write_word(ss,DX,(Bit16u)read_byte(BIOSMEM_SEG,BIOSMEM_NB_ROWS)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_get_ega_info (BX,CX) +Bit16u *BX;Bit16u *CX; +{Bit16u ss=get_SS(); + Bit16u crtc; + Bit8u switches; + + crtc=read_word(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS); + if(crtc==VGAREG_MDA_CRTC_ADDRESS) + write_word(ss,BX,(1<<8)+0x0003); + else + write_word(ss,BX,0x0003); + + switches=read_byte(BIOSMEM_SEG,BIOSMEM_SWITCHES); + write_word(ss,CX,(switches&0x0f)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_alternate_prtsc() +{ +#ifdef DEBUG + unimplemented(); +#endif +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_select_vert_res (res) +Bit8u res; +{// res : 00 200 lines, 01 350 lines, 02 400 lines + Bit8u modeset,switches; + + modeset=read_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL); + switches=read_byte(BIOSMEM_SEG,BIOSMEM_SWITCHES); + switch(res) + {case 0x00: + // set modeset ctl bit 7 and reset bit 4 + // set switches bit 3-0 to 0x08 + modeset|=0x80;modeset&=0xef; + switches&=0xf0;switches|=0x08; + break; + case 0x01: + // reset modeset ctl bit 7 and bit 4 + // set switches bit 3-0 to 0x09 + modeset&=0x6f; + switches&=0xf0;switches|=0x09; + break; + case 0x02: + // reset modeset ctl bit 7 and set bit 4 + // set switches bit 3-0 to 0x09 + modeset|=0x10;modeset&=0x7f; + switches&=0xf0;switches|=0x09; + break; + default: + #ifdef DEBUG + printf("Select vert res (%02x) was discarded\n",res); + #endif + return; + } + write_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL,modeset); + write_byte(BIOSMEM_SEG,BIOSMEM_SWITCHES,switches); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_enable_default_palette_loading (disable) +Bit8u disable; +{ + Bit8u modeset; + + modeset=read_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL); + + // Bit 3 + if(disable!=0x00)modeset|=0x08; + else modeset&=0xf7; + + write_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL,modeset); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_enable_video_addressing (disable) +Bit8u disable; +{ + Bit8u misc; + + misc=inb(VGAREG_READ_MISC_OUTPUT); + // bit 1, 0 disable + if(disable!=0x00) misc&=0xfd; + else misc|=0x02; + outb(VGAREG_WRITE_MISC_OUTPUT,misc); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_enable_grayscale_summing (disable) +Bit8u disable; +{ + Bit8u modeset; + + modeset=read_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL); + + // Bit 1 set if disable=0 + if(disable==0x00)modeset|=0x02; + else modeset&=0xfd; + + write_byte(BIOSMEM_SEG,BIOSMEM_MODESET_CTL,modeset); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_enable_cursor_emulation (disable) +Bit8u disable; +{ + Bit8u videoctl; + + videoctl=read_byte(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL); + + // Bit 0 set if disable!=0 + if(disable!=0x00)videoctl|=0x01; + else videoctl&=0xfe; + + write_byte(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL,videoctl); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_switch_video_interface (AL,ES,DX) Bit8u AL;Bit16u ES;Bit16u DX; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_enable_video_refresh_control (AL) Bit8u AL; +{ +#ifdef DEBUG + unimplemented(); +#endif +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_write_string (flag,page,attr,count,row,col,seg,offset) +Bit8u flag;Bit8u page;Bit8u attr;Bit16u count;Bit8u row;Bit8u col;Bit16u seg;Bit16u offset; +{ + Bit16u newcurs,oldcurs,dummy; + Bit8u car,carattr; + + // Read curs info for the page + biosfn_get_cursor_pos(page,&dummy,&oldcurs); + + // if row=0xff special case : use current cursor position + if(row==0xff) + {col=oldcurs&0x00ff; + row=(oldcurs&0xff00)>>8; + } + + newcurs=row; newcurs<<=8; newcurs+=col; + biosfn_set_cursor_pos(page,newcurs); + + while(count--!=0) + { + car=read_byte(seg,offset++); + if((flag&0x02)!=0) + attr=read_byte(seg,offset++); + + biosfn_write_teletype(car,page,attr,WITH_ATTR); + } + + // Set back curs pos + if((flag&0x01)==0) + biosfn_set_cursor_pos(page,oldcurs); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_display_code (BX) +Bit16u *BX; +{ + Bit16u ss=get_SS(); + write_word(ss,BX,(Bit16u)read_byte(BIOSMEM_SEG,BIOSMEM_DCC_INDEX)); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_set_display_code (BL,BH) +Bit8u BL;Bit8u BH; +{ + write_byte(BIOSMEM_SEG,BIOSMEM_DCC_INDEX,BL); + +#ifdef DEBUG + printf("Alternate Display code (%02x) was discarded\n",BH); +#endif +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_state_info (BX,ES,DI) +Bit16u BX;Bit16u ES;Bit16u DI; +{ + // Address of static functionality table + write_word(ES,DI+0x00,&static_functionality); + write_word(ES,DI+0x02,0xC000); + + // Hard coded copy from BIOS area. Should it be cleaner ? + memcpyb(ES,DI+0x04,BIOSMEM_SEG,0x49,30); + memcpyb(ES,DI+0x22,BIOSMEM_SEG,0x84,3); + + write_byte(ES,DI+0x25,read_byte(BIOSMEM_SEG,BIOSMEM_DCC_INDEX)); + write_byte(ES,DI+0x26,0); + write_byte(ES,DI+0x27,16); + write_byte(ES,DI+0x28,0); + write_byte(ES,DI+0x29,8); + write_byte(ES,DI+0x2a,2); + write_byte(ES,DI+0x2b,0); + write_byte(ES,DI+0x2c,0); + write_byte(ES,DI+0x31,3); + write_byte(ES,DI+0x32,0); + + memsetb(ES,DI+0x33,0,13); +} + +// -------------------------------------------------------------------------------------------- +static void biosfn_read_video_state_size (CX,ES,BX) Bit16u CX;Bit16u ES;Bit16u BX; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_save_video_state (CX,ES,BX) Bit16u CX;Bit16u ES;Bit16u BX; +{ +#ifdef DEBUG + unimplemented(); +#endif +} +static void biosfn_restore_video_state (CX,ES,BX) Bit16u CX;Bit16u ES;Bit16u BX; +{ +#ifdef DEBUG + unimplemented(); +#endif +} + +// ============================================================================================ +// +// Video Utils +// +// ============================================================================================ + +// -------------------------------------------------------------------------------------------- +static Bit8u find_vga_entry(mode) +Bit8u mode; +{ + Bit8u i,line=0xFF; + for(i=0;i<=MODE_MAX;i++) + if(vga_modes[i].svgamode==mode) + {line=i; + break; + } + return line; +} + +/* =========================================================== */ +/* + * Misc Utils +*/ +/* =========================================================== */ + +// -------------------------------------------------------------------------------------------- +static void memsetb(seg,offset,value,count) + Bit16u seg; + Bit16u offset; + Bit16u value; + Bit16u count; +{ +#asm + push bp + mov bp, sp + + push ax + push cx + push es + push di + + mov cx, 10[bp] ; count + cmp cx, #0x00 + je memsetb_end + mov ax, 4[bp] ; segment + mov es, ax + mov ax, 6[bp] ; offset + mov di, ax + mov al, 8[bp] ; value + cld + rep + stosb + +memsetb_end: + pop di + pop es + pop cx + pop ax + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- +static void memsetw(seg,offset,value,count) + Bit16u seg; + Bit16u offset; + Bit16u value; + Bit16u count; +{ +#asm + push bp + mov bp, sp + + push ax + push cx + push es + push di + + mov cx, 10[bp] ; count + cmp cx, #0x00 + je memsetw_end + mov ax, 4[bp] ; segment + mov es, ax + mov ax, 6[bp] ; offset + mov di, ax + mov ax, 8[bp] ; value + cld + rep + stosw + +memsetw_end: + pop di + pop es + pop cx + pop ax + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- +static void memcpyb(dseg,doffset,sseg,soffset,count) + Bit16u dseg; + Bit16u doffset; + Bit16u sseg; + Bit16u soffset; + Bit16u count; +{ +#asm + push bp + mov bp, sp + + push ax + push cx + push es + push di + push ds + push si + + mov cx, 12[bp] ; count + cmp cx, #0x0000 + je memcpyb_end + mov ax, 4[bp] ; dsegment + mov es, ax + mov ax, 6[bp] ; doffset + mov di, ax + mov ax, 8[bp] ; ssegment + mov ds, ax + mov ax, 10[bp] ; soffset + mov si, ax + cld + rep + movsb + +memcpyb_end: + pop si + pop ds + pop di + pop es + pop cx + pop ax + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- +static void memcpyw(dseg,doffset,sseg,soffset,count) + Bit16u dseg; + Bit16u doffset; + Bit16u sseg; + Bit16u soffset; + Bit16u count; +{ +#asm + push bp + mov bp, sp + + push ax + push cx + push es + push di + push ds + push si + + mov cx, 12[bp] ; count + cmp cx, #0x0000 + je memcpyw_end + mov ax, 4[bp] ; dsegment + mov es, ax + mov ax, 6[bp] ; doffset + mov di, ax + mov ax, 8[bp] ; ssegment + mov ds, ax + mov ax, 10[bp] ; soffset + mov si, ax + cld + rep + movsw + +memcpyw_end: + pop si + pop ds + pop di + pop es + pop cx + pop ax + + pop bp +#endasm +} + +/* =========================================================== */ +/* + * These functions where ripped from Kevin's rombios.c +*/ +/* =========================================================== */ + +// -------------------------------------------------------------------------------------------- +static Bit8u +read_byte(seg, offset) + Bit16u seg; + Bit16u offset; +{ +#asm + push bp + mov bp, sp + + push bx + push ds + mov ax, 4[bp] ; segment + mov ds, ax + mov bx, 6[bp] ; offset + mov al, [bx] + ;; al = return value (byte) + pop ds + pop bx + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- +static Bit16u +read_word(seg, offset) + Bit16u seg; + Bit16u offset; +{ +#asm + push bp + mov bp, sp + + push bx + push ds + mov ax, 4[bp] ; segment + mov ds, ax + mov bx, 6[bp] ; offset + mov ax, [bx] + ;; ax = return value (word) + pop ds + pop bx + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- +static void +write_byte(seg, offset, data) + Bit16u seg; + Bit16u offset; + Bit8u data; +{ +#asm + push bp + mov bp, sp + + push ax + push bx + push ds + mov ax, 4[bp] ; segment + mov ds, ax + mov bx, 6[bp] ; offset + mov al, 8[bp] ; data byte + mov [bx], al ; write data byte + pop ds + pop bx + pop ax + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- +static void +write_word(seg, offset, data) + Bit16u seg; + Bit16u offset; + Bit16u data; +{ +#asm + push bp + mov bp, sp + + push ax + push bx + push ds + mov ax, 4[bp] ; segment + mov ds, ax + mov bx, 6[bp] ; offset + mov ax, 8[bp] ; data word + mov [bx], ax ; write data word + pop ds + pop bx + pop ax + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- + Bit8u +inb(port) + Bit16u port; +{ +#asm + push bp + mov bp, sp + + push dx + mov dx, 4[bp] + in al, dx + pop dx + + pop bp +#endasm +} + +#if 0 + Bit16u +inw(port) + Bit16u port; +{ +#asm + push bp + mov bp, sp + + push dx + mov dx, 4[bp] + in ax, dx + pop dx + + pop bp +#endasm +} +#endif + +// -------------------------------------------------------------------------------------------- + void +outb(port, val) + Bit16u port; + Bit8u val; +{ +#asm + push bp + mov bp, sp + + push ax + push dx + mov dx, 4[bp] + mov al, 6[bp] + out dx, al + pop dx + pop ax + + pop bp +#endasm +} + +// -------------------------------------------------------------------------------------------- +#if 0 + void +outw(port, val) + Bit16u port; + Bit16u val; +{ +#asm + push bp + mov bp, sp + + push ax + push dx + mov dx, 4[bp] + mov ax, 6[bp] + out dx, ax + pop dx + pop ax + + pop bp +#endasm +} +#endif + +Bit16u get_SS() +{ +#asm + mov ax, ss +#endasm +} + +#ifdef DEBUG +void unimplemented() +{ + printf("--> Unimplemented\n"); +} + +void unknown() +{ + printf("--> Unknown int10\n"); +} +#endif + +#ifdef DEBUG +// -------------------------------------------------------------------------------------------- +void printf(s) + Bit8u *s; +{ + Bit8u c, format_char; + Boolean in_format; + unsigned format_width, i; + Bit16u *arg_ptr; + Bit16u arg_seg, arg, digit, nibble, shift_count; + + arg_ptr = &s; + arg_seg = get_SS(); + + in_format = 0; + format_width = 0; + + while (c = read_byte(0xc000, s)) { + if ( c == '%' ) { + in_format = 1; + format_width = 0; + } + else if (in_format) { + if ( (c>='0') && (c<='9') ) { + format_width = (format_width * 10) + (c - '0'); + } + else if (c == 'x') { + arg_ptr++; // increment to next arg + arg = read_word(arg_seg, arg_ptr); + if (format_width == 0) + format_width = 4; + i = 0; + digit = format_width - 1; + for (i=0; i<format_width; i++) { + nibble = (arg >> (4 * digit)) & 0x000f; + if (nibble <= 9) + outb(0xfff0, nibble + '0'); + else + outb(0xfff0, (nibble - 10) + 'A'); + digit--; + } + in_format = 0; + } + //else if (c == 'd') { + // in_format = 0; + // } + } + else { + outb(0xfff0, c); + } + s ++; + } +} +#endif + +// -------------------------------------------------------------------------------------------- + +#asm +;; DATA_SEG_DEFS_HERE +#endasm + +#asm +.ascii "vgabios ends here" +.byte 0x00 +vgabios_end: +.byte 0xCB +;; BLOCK_STRINGS_BEGIN +#endasm + diff --git a/vgabios.h b/vgabios.h new file mode 100644 index 0000000..b3e69b3 --- /dev/null +++ b/vgabios.h @@ -0,0 +1,52 @@ +/* Types */ +typedef unsigned char Bit8u; +typedef unsigned short Bit16u; +typedef unsigned short Boolean; + +/* Defines */ +#define JMPL(label) db 0xe9!!!dw (label-(*+2)) ; jmp near label + +#define SET_INT_VECTOR(vec, seg, off) \ + push ds !!!\ + xor ax,ax !!!\ + mov ds,ax !!!\ + mov ax, off !!!\ + mov vec*4, ax !!!\ + mov ax, seg !!!\ + mov vec*4+2, ax !!!\ + pop ds + +#define SET_AL(val8) AX = ((AX & 0xff00) | (val8)) +#define SET_BL(val8) BX = ((BX & 0xff00) | (val8)) +#define SET_CL(val8) CX = ((CX & 0xff00) | (val8)) +#define SET_DL(val8) DX = ((DX & 0xff00) | (val8)) +#define SET_AH(val8) AX = ((AX & 0x00ff) | ((val8) << 8)) +#define SET_BH(val8) BX = ((BX & 0x00ff) | ((val8) << 8)) +#define SET_CH(val8) CX = ((CX & 0x00ff) | ((val8) << 8)) +#define SET_DH(val8) DX = ((DX & 0x00ff) | ((val8) << 8)) + +#define GET_AL() ( AX & 0x00ff ) +#define GET_BL() ( BX & 0x00ff ) +#define GET_CL() ( CX & 0x00ff ) +#define GET_DL() ( DX & 0x00ff ) +#define GET_AH() ( AX >> 8 ) +#define GET_BH() ( BX >> 8 ) +#define GET_CH() ( CX >> 8 ) +#define GET_DH() ( DX >> 8 ) + +#define SET_CF() FLAGS |= 0x0001 +#define CLEAR_CF() FLAGS &= 0xfffe +#define GET_CF() (FLAGS & 0x0001) + +#define SET_ZF() FLAGS |= 0x0040 +#define CLEAR_ZF() FLAGS &= 0xffbf +#define GET_ZF() (FLAGS & 0x0040) + +#define SCROLL_DOWN 0 +#define SCROLL_UP 1 +#define NO_ATTR 2 +#define WITH_ATTR 3 + +#define SCREEN_SIZE(x,y) (((x*y*2)|0x00ff)+1) +#define SCREEN_MEM_START(x,y,p) ((((x*y*2)|0x00ff)+1)*p) +#define SCREEN_IO_START(x,y,p) ((((x*y)|0x00ff)+1)*p) diff --git a/vgafonts.h b/vgafonts.h new file mode 100644 index 0000000..0c213e6 --- /dev/null +++ b/vgafonts.h @@ -0,0 +1,784 @@ +/* + * These fonts come from ftp://ftp.simtel.net/pub/simtelnet/msdos/screen/fntcol16.zip + * The package is (c) by Joseph Gil + * The individual fonts are public domain + */ +static Bit8u vgafont8[256*8]= +{ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x7e, 0x81, 0xa5, 0x81, 0xbd, 0x99, 0x81, 0x7e, + 0x7e, 0xff, 0xdb, 0xff, 0xc3, 0xe7, 0xff, 0x7e, + 0x6c, 0xfe, 0xfe, 0xfe, 0x7c, 0x38, 0x10, 0x00, + 0x10, 0x38, 0x7c, 0xfe, 0x7c, 0x38, 0x10, 0x00, + 0x38, 0x7c, 0x38, 0xfe, 0xfe, 0x7c, 0x38, 0x7c, + 0x10, 0x10, 0x38, 0x7c, 0xfe, 0x7c, 0x38, 0x7c, + 0x00, 0x00, 0x18, 0x3c, 0x3c, 0x18, 0x00, 0x00, + 0xff, 0xff, 0xe7, 0xc3, 0xc3, 0xe7, 0xff, 0xff, + 0x00, 0x3c, 0x66, 0x42, 0x42, 0x66, 0x3c, 0x00, + 0xff, 0xc3, 0x99, 0xbd, 0xbd, 0x99, 0xc3, 0xff, + 0x0f, 0x07, 0x0f, 0x7d, 0xcc, 0xcc, 0xcc, 0x78, + 0x3c, 0x66, 0x66, 0x66, 0x3c, 0x18, 0x7e, 0x18, + 0x3f, 0x33, 0x3f, 0x30, 0x30, 0x70, 0xf0, 0xe0, + 0x7f, 0x63, 0x7f, 0x63, 0x63, 0x67, 0xe6, 0xc0, + 0x99, 0x5a, 0x3c, 0xe7, 0xe7, 0x3c, 0x5a, 0x99, + 0x80, 0xe0, 0xf8, 0xfe, 0xf8, 0xe0, 0x80, 0x00, + 0x02, 0x0e, 0x3e, 0xfe, 0x3e, 0x0e, 0x02, 0x00, + 0x18, 0x3c, 0x7e, 0x18, 0x18, 0x7e, 0x3c, 0x18, + 0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x66, 0x00, + 0x7f, 0xdb, 0xdb, 0x7b, 0x1b, 0x1b, 0x1b, 0x00, + 0x3e, 0x63, 0x38, 0x6c, 0x6c, 0x38, 0xcc, 0x78, + 0x00, 0x00, 0x00, 0x00, 0x7e, 0x7e, 0x7e, 0x00, + 0x18, 0x3c, 0x7e, 0x18, 0x7e, 0x3c, 0x18, 0xff, + 0x18, 0x3c, 0x7e, 0x18, 0x18, 0x18, 0x18, 0x00, + 0x18, 0x18, 0x18, 0x18, 0x7e, 0x3c, 0x18, 0x00, + 0x00, 0x18, 0x0c, 0xfe, 0x0c, 0x18, 0x00, 0x00, + 0x00, 0x30, 0x60, 0xfe, 0x60, 0x30, 0x00, 0x00, + 0x00, 0x00, 0xc0, 0xc0, 0xc0, 0xfe, 0x00, 0x00, + 0x00, 0x24, 0x66, 0xff, 0x66, 0x24, 0x00, 0x00, + 0x00, 0x18, 0x3c, 0x7e, 0xff, 0xff, 0x00, 0x00, + 0x00, 0xff, 0xff, 0x7e, 0x3c, 0x18, 0x00, 0x00, + 0x00, 0x00, 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0x18, 0xf8, 0x18, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf8, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1f, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xff, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x1f, 0x18, 0x1f, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x37, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x36, 0x36, 0x36, 0x36, 0x36, 0x37, 0x30, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x30, 0x37, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x36, 0x36, 0x36, 0x36, 0x36, 0xf7, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0xf7, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x36, 0x36, 0x36, 0x36, 0x36, 0x37, 0x30, 0x37, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x36, 0x36, 0x36, 0x36, 0x36, 0xf7, 0x00, 0xf7, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x18, 0x18, 0x18, 0x18, 0x18, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x00, 0xff, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x1f, 0x18, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x18, 0x1f, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3f, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0xff, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, 0x36, + 0x18, 0x18, 0x18, 0x18, 0x18, 0xff, 0x18, 0xff, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1f, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, + 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, + 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, + 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0xd8, 0xd8, 0xd8, 0xdc, 0x76, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x78, 0xcc, 0xcc, 0xcc, 0xd8, 0xcc, 0xc6, 0xc6, 0xc6, 0xcc, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0xfe, 0xc6, 0xc6, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0xc0, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0xfe, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0xfe, 0xc6, 0x60, 0x30, 0x18, 0x30, 0x60, 0xc6, 0xfe, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xd8, 0xd8, 0xd8, 0xd8, 0xd8, 0x70, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x66, 0x66, 0x66, 0x66, 0x66, 0x7c, 0x60, 0x60, 0xc0, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x7e, 0x18, 0x3c, 0x66, 0x66, 0x66, 0x3c, 0x18, 0x7e, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x38, 0x6c, 0xc6, 0xc6, 0xfe, 0xc6, 0xc6, 0x6c, 0x38, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x38, 0x6c, 0xc6, 0xc6, 0xc6, 0x6c, 0x6c, 0x6c, 0x6c, 0xee, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x1e, 0x30, 0x18, 0x0c, 0x3e, 0x66, 0x66, 0x66, 0x66, 0x3c, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x7e, 0xdb, 0xdb, 0xdb, 0x7e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x03, 0x06, 0x7e, 0xdb, 0xdb, 0xf3, 0x7e, 0x60, 0xc0, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x1c, 0x30, 0x60, 0x60, 0x7c, 0x60, 0x60, 0x60, 0x30, 0x1c, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x7c, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0xc6, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0xfe, 0x00, 0x00, 0xfe, 0x00, 0x00, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x7e, 0x18, 0x18, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x30, 0x18, 0x0c, 0x06, 0x0c, 0x18, 0x30, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x0c, 0x18, 0x30, 0x60, 0x30, 0x18, 0x0c, 0x00, 0x7e, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x0e, 0x1b, 0x1b, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, + 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0x18, 0xd8, 0xd8, 0xd8, 0x70, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x7e, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x76, 0xdc, 0x00, 0x76, 0xdc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x38, 0x6c, 0x6c, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x0f, 0x0c, 0x0c, 0x0c, 0x0c, 0x0c, 0xec, 0x6c, 0x6c, 0x3c, 0x1c, 0x00, 0x00, 0x00, 0x00, + 0x00, 0xd8, 0x6c, 0x6c, 0x6c, 0x6c, 0x6c, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x70, 0xd8, 0x30, 0x60, 0xc8, 0xf8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x7c, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; +static Bit8u vgafont14alt[1]={0x00}; +static Bit8u vgafont16alt[1]={0x00}; diff --git a/vgatables.h b/vgatables.h new file mode 100644 index 0000000..5171b63 --- /dev/null +++ b/vgatables.h @@ -0,0 +1,315 @@ +/* + * + * BIOS Memory + * + */ +#define BIOSMEM_SEG 0x40 + +#define BIOSMEM_INITIAL_MODE 0x10 +#define BIOSMEM_CURRENT_MODE 0x49 +#define BIOSMEM_NB_COLS 0x4A +#define BIOSMEM_PAGE_SIZE 0x4C +#define BIOSMEM_CURRENT_START 0x4E +#define BIOSMEM_CURSOR_POS 0x50 +#define BIOSMEM_CURSOR_TYPE 0x60 +#define BIOSMEM_CURRENT_PAGE 0x62 +#define BIOSMEM_CRTC_ADDRESS 0x63 +#define BIOSMEM_CURRENT_MSR 0x65 +#define BIOSMEM_CURRENT_PAL 0x66 +#define BIOSMEM_NB_ROWS 0x84 +#define BIOSMEM_CHAR_HEIGHT 0x85 +#define BIOSMEM_VIDEO_CTL 0x87 +#define BIOSMEM_SWITCHES 0x88 +#define BIOSMEM_MODESET_CTL 0x89 +#define BIOSMEM_DCC_INDEX 0x8A +#define BIOSMEM_VS_POINTER 0xA8 + + +/* + * + * VGA registers + * + */ +#define VGAREG_ACTL_ADDRESS 0x3c0 +#define VGAREG_ACTL_WRITE_DATA 0x3c0 +#define VGAREG_ACTL_READ_DATA 0x3c1 + +#define VGAREG_INPUT_STATUS 0x3c2 +#define VGAREG_WRITE_MISC_OUTPUT 0x3c2 +#define VGAREG_VIDEO_ENABLE 0x3c3 +#define VGAREG_SEQU_ADDRESS 0x3c4 +#define VGAREG_SEQU_DATA 0x3c5 + +#define VGAREG_PEL_MASK 0x3c6 +#define VGAREG_DAC_STATE 0x3c7 +#define VGAREG_DAC_READ_ADDRESS 0x3c7 +#define VGAREG_DAC_WRITE_ADDRESS 0x3c8 +#define VGAREG_DAC_DATA 0x3c9 + +#define VGAREG_READ_FEATURE_CTL 0x3ca +#define VGAREG_READ_MISC_OUTPUT 0x3cc + +#define VGAREG_GRDC_ADDRESS 0x3ce +#define VGAREG_GRDC_DATA 0x3cf + +#define VGAREG_MDA_CRTC_ADDRESS 0x3b4 +#define VGAREG_MDA_CRTC_DATA 0x3b5 +#define VGAREG_VGA_CRTC_ADDRESS 0x3d4 +#define VGAREG_VGA_CRTC_DATA 0x3d5 + +#define VGAREG_MDA_WRITE_FEATURE_CTL 0x3ba +#define VGAREG_VGA_WRITE_FEATURE_CTL 0x3da +#define VGAREG_ACTL_RESET 0x3da + +#define VGAREG_MDA_MODECTL 0x3b8 +#define VGAREG_CGA_MODECTL 0x3d8 +#define VGAREG_CGA_PALETTE 0x3d9 + +/* Video memory */ +#define VGAMEM_GRAPH 0xA000 +#define VGAMEM_CTEXT 0xB800 +#define VGAMEM_MTEXT 0xB000 + +/* + * + * Tables of default values for each mode + * + */ +#define MODE_MAX 0x13 +#define TEXT 0x00 +#define GRAPH 0x01 + +#define CTEXT 0x00 +#define MTEXT 0x01 +#define CGA 0x02 +#define PLANAR1 0x03 +#define PLANAR2 0x04 +#define PLANAR4 0x05 +#define LINEAR8 0x06 + +// for SVGA +#define LINEAR15 0x07 +#define LINEAR16 0x08 +#define LINEAR24 0x09 +#define LINEAR32 0x0a + +typedef struct +{Bit8u svgamode; + Bit16u vesamode; + Bit8u class; /* TEXT, GRAPH */ + Bit8u memmodel; /* CTEXT,MTEXT,CGA,PL1,PL2,PL4,P8,P15,P16,P24,P32 */ + Bit8u nbpages; + Bit8u pixbits; + Bit16u swidth, sheight; + Bit16u twidth, theight; + Bit16u cwidth, cheight; + Bit16u sstart; + Bit16u slength; + Bit8u miscreg; + Bit8u pelmask; + Bit8u crtcmodel; + Bit8u actlmodel; + Bit8u grdcmodel; + Bit8u sequmodel; + Bit8u dacmodel; /* 0 1 2 3 */ +} VGAMODES; + +static VGAMODES vga_modes[MODE_MAX+1]= +{//mode vesa class model pg bits sw sh tw th cw ch sstart slength misc pelm crtc actl gdc sequ dac + {0x00, 0xFFFF, TEXT, CTEXT, 8, 4, 360, 400, 40, 25, 9, 16, 0xB800, 0x0800, 0x67, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x02}, + {0x01, 0xFFFF, TEXT, CTEXT, 8, 4, 360, 400, 40, 25, 9, 16, 0xB800, 0x0800, 0x67, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x02}, + {0x02, 0xFFFF, TEXT, CTEXT, 4, 4, 720, 400, 80, 25, 9, 16, 0xB800, 0x1000, 0x67, 0xFF, 0x01, 0x00, 0x00, 0x01, 0x02}, + {0x03, 0xFFFF, TEXT, CTEXT, 4, 4, 720, 400, 80, 25, 9, 16, 0xB800, 0x1000, 0x67, 0xFF, 0x01, 0x00, 0x00, 0x01, 0x02}, + {0x04, 0xFFFF, GRAPH, CGA, 4, 2, 320, 200, 40, 25, 8, 8, 0xB800, 0x0800, 0x63, 0xFF, 0x02, 0x01, 0x01, 0x02, 0x01}, + {0x05, 0xFFFF, GRAPH, CGA, 1, 2, 320, 200, 40, 25, 8, 8, 0xB800, 0x0800, 0x63, 0xFF, 0x02, 0x01, 0x01, 0x02, 0x01}, + {0x06, 0xFFFF, GRAPH, CGA, 1, 1, 640, 200, 80, 25, 8, 8, 0xB800, 0x1000, 0x63, 0xFF, 0x03, 0x02, 0x02, 0x03, 0x01}, + {0x07, 0xFFFF, TEXT, MTEXT, 4, 4, 720, 400, 80, 25, 9, 16, 0xB000, 0x1000, 0x66, 0xFF, 0x04, 0x03, 0x03, 0x01, 0x00}, + {0x0D, 0xFFFF, GRAPH, PLANAR4, 8, 4, 320, 200, 40, 25, 8, 8, 0xA000, 0x0000, 0x63, 0xFF, 0x05, 0x04, 0x04, 0x04, 0x01}, + {0x0E, 0xFFFF, GRAPH, PLANAR4, 4, 4, 640, 200, 80, 25, 8, 8, 0xA000, 0x0000, 0x63, 0xFF, 0x06, 0x04, 0x04, 0x05, 0x01}, + {0x0F, 0xFFFF, GRAPH, PLANAR2, 2, 2, 640, 350, 80, 25, 8, 14, 0xA000, 0x0000, 0xa2, 0xFF, 0x07, 0x05, 0x04, 0x05, 0x00}, + {0x10, 0xFFFF, GRAPH, PLANAR4, 2, 4, 640, 350, 80, 25, 8, 14, 0xA000, 0x0000, 0xa3, 0xFF, 0x07, 0x06, 0x04, 0x05, 0x02}, + {0x11, 0xFFFF, GRAPH, PLANAR1, 1, 1, 640, 480, 80, 30, 8, 16, 0xA000, 0x0000, 0xe3, 0xFF, 0x08, 0x07, 0x04, 0x05, 0x02}, + {0x12, 0xFFFF, GRAPH, PLANAR4, 1, 4, 640, 480, 80, 30, 8, 16, 0xA000, 0x0000, 0xe3, 0xFF, 0x08, 0x06, 0x04, 0x05, 0x02}, + {0x13, 0xFFFF, GRAPH, LINEAR8, 1, 8, 320, 200, 40, 25, 8, 8, 0xA000, 0x0000, 0x63, 0xFF, 0x09, 0x08, 0x05, 0x06, 0x03} +}; + +/* CRTC */ +#define CRTC_MAX_REG 0x18 +#define CRTC_MAX_MODEL 0x09 +static Bit8u crtc_access[CRTC_MAX_REG+1]= +{ /* 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 */ + 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 +}; +static Bit8u crtc_regs[CRTC_MAX_MODEL+1][CRTC_MAX_REG+1]= +{/* Model 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 */ + /* 00 */ 0x2d,0x27,0x28,0x90,0x2b,0xa0,0xbf,0x1f,0x00,0x4f,0x0d,0x0e,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x14,0x1f,0x96,0xb9,0xa3,0xff, + /* 01 */ 0x5f,0x4f,0x50,0x82,0x55,0x81,0xbf,0x1f,0x00,0x4f,0x0d,0x0e,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x28,0x1f,0x96,0xb9,0xa3,0xff, + /* 02 */ 0x2d,0x27,0x28,0x90,0x2b,0x80,0xbf,0x1f,0x00,0xc1,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x14,0x00,0x96,0xb9,0xa2,0xff, + /* 03 */ 0x5f,0x4f,0x50,0x82,0x54,0x80,0xbf,0x1f,0x00,0xc1,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x28,0x00,0x96,0xb9,0xc2,0xff, + /* 04 */ 0x5f,0x4f,0x50,0x82,0x55,0x81,0xbf,0x1f,0x00,0x4f,0x0d,0x0e,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x28,0x0f,0x96,0xb9,0xa3,0xff, + /* 05 */ 0x2d,0x27,0x28,0x90,0x2b,0x80,0xbf,0x1f,0x00,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x14,0x00,0x96,0xb9,0xe3,0xff, + /* 06 */ 0x5f,0x4f,0x50,0x82,0x54,0x80,0xbf,0x1f,0x00,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x28,0x00,0x96,0xb9,0xe3,0xff, + /* 07 */ 0x5f,0x4f,0x50,0x82,0x54,0x80,0xbf,0x1f,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0x83,0x85,0x5d,0x28,0x0f,0x63,0xba,0xe3,0xff, + /* 08 */ 0x5f,0x4f,0x50,0x82,0x54,0x80,0x0b,0x3e,0x00,0x40,0x00,0x00,0x00,0x00,0x00,0x00,0xea,0x8c,0xdf,0x28,0x00,0xe7,0x04,0xe3,0xff, + /* 09 */ 0x5f,0x4f,0x50,0x82,0x54,0x80,0xbf,0x1f,0x00,0x41,0x00,0x00,0x00,0x00,0x00,0x00,0x9c,0x8e,0x8f,0x28,0x40,0x96,0xb9,0xa3,0xff +}; + +/* Attribute Controler 0x3c0 */ +#define ACTL_MAX_REG 0x14 +#define ACTL_MAX_MODEL 0x08 + +static Bit8u actl_access[ACTL_MAX_REG+1]= +{/* 00 01 02 03 04 05 06 07 08 09 0A 0B OC OD OE OF 10 11 12 13 14 */ + 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 +}; + +static Bit8u actl_regs[ACTL_MAX_MODEL+1][ACTL_MAX_REG+1]= +{/* Model 00 01 02 03 04 05 06 07 08 09 0A 0B OC OD OE OF 10 11 12 13 14 */ + /* 00 */ 0x00,0x01,0x02,0x03,0x04,0x05,0x14,0x07,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,0x0c,0x00,0x0f,0x08,0x00, + /* 01 */ 0x00,0x13,0x15,0x17,0x02,0x04,0x06,0x07,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x01,0x00,0x03,0x00,0x00, + /* 02 */ 0x00,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x17,0x01,0x00,0x01,0x00,0x00, + /* 03 */ 0x00,0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x10,0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x0e,0x00,0x0f,0x08,0x00, + /* 04 */ 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x01,0x00,0x0f,0x00,0x00, + /* 05 */ 0x00,0x08,0x00,0x00,0x18,0x18,0x00,0x00,0x00,0x08,0x00,0x00,0x00,0x18,0x00,0x00,0x0b,0x00,0x05,0x00,0x00, + /* 06 */ 0x00,0x01,0x02,0x03,0x04,0x05,0x14,0x07,0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,0x01,0x00,0x0f,0x00,0x00, + /* 07 */ 0x00,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x3f,0x01,0x00,0x01,0x00,0x00, + /* 08 */ 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f,0x41,0x00,0x0f,0x00,0x00 +}; + +/* Sequencer 0x3c4 */ +#define SEQU_MAX_REG 0x04 +#define SEQU_MAX_MODEL 0x06 + +static Bit8u sequ_access[SEQU_MAX_REG+1]= +{ /* 00 01 02 03 04 */ + 0x00,0x00,0x00,0x00,0x00 +}; + +static Bit8u sequ_regs[SEQU_MAX_MODEL+1][SEQU_MAX_REG+1]= +{/* Model 00 01 02 03 04 */ + /* 00 */ 0x03,0x08,0x03,0x00,0x02, + /* 01 */ 0x03,0x00,0x03,0x00,0x02, + /* 02 */ 0x03,0x09,0x03,0x00,0x02, + /* 03 */ 0x03,0x01,0x01,0x00,0x06, + /* 04 */ 0x03,0x09,0x0f,0x00,0x06, + /* 05 */ 0x03,0x01,0x0f,0x00,0x06, + /* 06 */ 0x03,0x01,0x0f,0x00,0x0e +}; + +/* Graphic ctl 0x3ce */ +#define GRDC_MAX_REG 0x08 +#define GRDC_MAX_MODEL 0x05 + +static Bit8u grdc_access[GRDC_MAX_REG+1]= +{ /* 00 01 02 03 04 05 06 07 08 */ + 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 +}; + +static Bit8u grdc_regs[GRDC_MAX_MODEL+1][GRDC_MAX_REG+1]= +{/* Model 00 01 02 03 04 05 06 07 08 */ + /* 00 */ 0x00,0x00,0x00,0x00,0x00,0x10,0x0e,0x0f,0xff, + /* 01 */ 0x00,0x00,0x00,0x00,0x00,0x30,0x0f,0x0f,0xff, + /* 02 */ 0x00,0x00,0x00,0x00,0x00,0x00,0x0d,0x0f,0xff, + /* 03 */ 0x00,0x00,0x00,0x00,0x00,0x10,0x0a,0x0f,0xff, + /* 04 */ 0x00,0x00,0x00,0x00,0x00,0x00,0x05,0x0f,0xff, + /* 05 */ 0x00,0x00,0x00,0x00,0x00,0x40,0x05,0x0f,0xff +}; + +/* Default Palette */ +#define DAC_MAX_MODEL 3 + +static Bit8u dac_regs[DAC_MAX_MODEL+1]= +{0x3f,0x3f,0x3f,0xff}; + +/* Mono */ +static Bit8u palette0[63+1][3]= +{ + 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, + 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, + 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, + 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, + 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, + 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, + 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, 0x2a,0x2a,0x2a, + 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f, 0x3f,0x3f,0x3f +}; + +static Bit8u palette1[63+1][3]= +{ + 0x00,0x00,0x00, 0x00,0x00,0x2a, 0x00,0x2a,0x00, 0x00,0x2a,0x2a, 0x2a,0x00,0x00, 0x2a,0x00,0x2a, 0x2a,0x15,0x00, 0x2a,0x2a,0x2a, + 0x00,0x00,0x00, 0x00,0x00,0x2a, 0x00,0x2a,0x00, 0x00,0x2a,0x2a, 0x2a,0x00,0x00, 0x2a,0x00,0x2a, 0x2a,0x15,0x00, 0x2a,0x2a,0x2a, + 0x15,0x15,0x15, 0x15,0x15,0x3f, 0x15,0x3f,0x15, 0x15,0x3f,0x3f, 0x3f,0x15,0x15, 0x3f,0x15,0x3f, 0x3f,0x3f,0x15, 0x3f,0x3f,0x3f, + 0x15,0x15,0x15, 0x15,0x15,0x3f, 0x15,0x3f,0x15, 0x15,0x3f,0x3f, 0x3f,0x15,0x15, 0x3f,0x15,0x3f, 0x3f,0x3f,0x15, 0x3f,0x3f,0x3f, + 0x00,0x00,0x00, 0x00,0x00,0x2a, 0x00,0x2a,0x00, 0x00,0x2a,0x2a, 0x2a,0x00,0x00, 0x2a,0x00,0x2a, 0x2a,0x15,0x00, 0x2a,0x2a,0x2a, + 0x00,0x00,0x00, 0x00,0x00,0x2a, 0x00,0x2a,0x00, 0x00,0x2a,0x2a, 0x2a,0x00,0x00, 0x2a,0x00,0x2a, 0x2a,0x15,0x00, 0x2a,0x2a,0x2a, + 0x15,0x15,0x15, 0x15,0x15,0x3f, 0x15,0x3f,0x15, 0x15,0x3f,0x3f, 0x3f,0x15,0x15, 0x3f,0x15,0x3f, 0x3f,0x3f,0x15, 0x3f,0x3f,0x3f, + 0x15,0x15,0x15, 0x15,0x15,0x3f, 0x15,0x3f,0x15, 0x15,0x3f,0x3f, 0x3f,0x15,0x15, 0x3f,0x15,0x3f, 0x3f,0x3f,0x15, 0x3f,0x3f,0x3f +}; + +static Bit8u palette2[63+1][3]= +{ + 0x00,0x00,0x00, 0x00,0x00,0x2a, 0x00,0x2a,0x00, 0x00,0x2a,0x2a, 0x2a,0x00,0x00, 0x2a,0x00,0x2a, 0x2a,0x2a,0x00, 0x2a,0x2a,0x2a, + 0x00,0x00,0x15, 0x00,0x00,0x3f, 0x00,0x2a,0x15, 0x00,0x2a,0x3f, 0x2a,0x00,0x15, 0x2a,0x00,0x3f, 0x2a,0x2a,0x15, 0x2a,0x2a,0x3f, + 0x00,0x15,0x00, 0x00,0x15,0x2a, 0x00,0x3f,0x00, 0x00,0x3f,0x2a, 0x2a,0x15,0x00, 0x2a,0x15,0x2a, 0x2a,0x3f,0x00, 0x2a,0x3f,0x2a, + 0x00,0x15,0x15, 0x00,0x15,0x3f, 0x00,0x3f,0x15, 0x00,0x3f,0x3f, 0x2a,0x15,0x15, 0x2a,0x15,0x3f, 0x2a,0x3f,0x15, 0x2a,0x3f,0x3f, + 0x15,0x00,0x00, 0x15,0x00,0x2a, 0x15,0x2a,0x00, 0x15,0x2a,0x2a, 0x3f,0x00,0x00, 0x3f,0x00,0x2a, 0x3f,0x2a,0x00, 0x3f,0x2a,0x2a, + 0x15,0x00,0x15, 0x15,0x00,0x3f, 0x15,0x2a,0x15, 0x15,0x2a,0x3f, 0x3f,0x00,0x15, 0x3f,0x00,0x3f, 0x3f,0x2a,0x15, 0x3f,0x2a,0x3f, + 0x15,0x15,0x00, 0x15,0x15,0x2a, 0x15,0x3f,0x00, 0x15,0x3f,0x2a, 0x3f,0x15,0x00, 0x3f,0x15,0x2a, 0x3f,0x3f,0x00, 0x3f,0x3f,0x2a, + 0x15,0x15,0x15, 0x15,0x15,0x3f, 0x15,0x3f,0x15, 0x15,0x3f,0x3f, 0x3f,0x15,0x15, 0x3f,0x15,0x3f, 0x3f,0x3f,0x15, 0x3f,0x3f,0x3f +}; + +static Bit8u palette3[256][3]= +{ + 0x00,0x00,0x00, 0x00,0x00,0x2a, 0x00,0x2a,0x00, 0x00,0x2a,0x2a, 0x2a,0x00,0x00, 0x2a,0x00,0x2a, 0x2a,0x15,0x00, 0x2a,0x2a,0x2a, + 0x15,0x15,0x15, 0x15,0x15,0x3f, 0x15,0x3f,0x15, 0x15,0x3f,0x3f, 0x3f,0x15,0x15, 0x3f,0x15,0x3f, 0x3f,0x3f,0x15, 0x3f,0x3f,0x3f, + 0x00,0x00,0x00, 0x05,0x05,0x05, 0x08,0x08,0x08, 0x0b,0x0b,0x0b, 0x0e,0x0e,0x0e, 0x11,0x11,0x11, 0x14,0x14,0x14, 0x18,0x18,0x18, + 0x1c,0x1c,0x1c, 0x20,0x20,0x20, 0x24,0x24,0x24, 0x28,0x28,0x28, 0x2d,0x2d,0x2d, 0x32,0x32,0x32, 0x38,0x38,0x38, 0x3f,0x3f,0x3f, + 0x00,0x00,0x3f, 0x10,0x00,0x3f, 0x1f,0x00,0x3f, 0x2f,0x00,0x3f, 0x3f,0x00,0x3f, 0x3f,0x00,0x2f, 0x3f,0x00,0x1f, 0x3f,0x00,0x10, + 0x3f,0x00,0x00, 0x3f,0x10,0x00, 0x3f,0x1f,0x00, 0x3f,0x2f,0x00, 0x3f,0x3f,0x00, 0x2f,0x3f,0x00, 0x1f,0x3f,0x00, 0x10,0x3f,0x00, + 0x00,0x3f,0x00, 0x00,0x3f,0x10, 0x00,0x3f,0x1f, 0x00,0x3f,0x2f, 0x00,0x3f,0x3f, 0x00,0x2f,0x3f, 0x00,0x1f,0x3f, 0x00,0x10,0x3f, + 0x1f,0x1f,0x3f, 0x27,0x1f,0x3f, 0x2f,0x1f,0x3f, 0x37,0x1f,0x3f, 0x3f,0x1f,0x3f, 0x3f,0x1f,0x37, 0x3f,0x1f,0x2f, 0x3f,0x1f,0x27, + + 0x3f,0x1f,0x1f, 0x3f,0x27,0x1f, 0x3f,0x2f,0x1f, 0x3f,0x37,0x1f, 0x3f,0x3f,0x1f, 0x37,0x3f,0x1f, 0x2f,0x3f,0x1f, 0x27,0x3f,0x1f, + 0x1f,0x3f,0x1f, 0x1f,0x3f,0x27, 0x1f,0x3f,0x2f, 0x1f,0x3f,0x37, 0x1f,0x3f,0x3f, 0x1f,0x37,0x3f, 0x1f,0x2f,0x3f, 0x1f,0x27,0x3f, + 0x2d,0x2d,0x3f, 0x31,0x2d,0x3f, 0x36,0x2d,0x3f, 0x3a,0x2d,0x3f, 0x3f,0x2d,0x3f, 0x3f,0x2d,0x3a, 0x3f,0x2d,0x36, 0x3f,0x2d,0x31, + 0x3f,0x2d,0x2d, 0x3f,0x31,0x2d, 0x3f,0x36,0x2d, 0x3f,0x3a,0x2d, 0x3f,0x3f,0x2d, 0x3a,0x3f,0x2d, 0x36,0x3f,0x2d, 0x31,0x3f,0x2d, + 0x2d,0x3f,0x2d, 0x2d,0x3f,0x31, 0x2d,0x3f,0x36, 0x2d,0x3f,0x3a, 0x2d,0x3f,0x3f, 0x2d,0x3a,0x3f, 0x2d,0x36,0x3f, 0x2d,0x31,0x3f, + 0x00,0x00,0x1c, 0x07,0x00,0x1c, 0x0e,0x00,0x1c, 0x15,0x00,0x1c, 0x1c,0x00,0x1c, 0x1c,0x00,0x15, 0x1c,0x00,0x0e, 0x1c,0x00,0x07, + 0x1c,0x00,0x00, 0x1c,0x07,0x00, 0x1c,0x0e,0x00, 0x1c,0x15,0x00, 0x1c,0x1c,0x00, 0x15,0x1c,0x00, 0x0e,0x1c,0x00, 0x07,0x1c,0x00, + 0x00,0x1c,0x00, 0x00,0x1c,0x07, 0x00,0x1c,0x0e, 0x00,0x1c,0x15, 0x00,0x1c,0x1c, 0x00,0x15,0x1c, 0x00,0x0e,0x1c, 0x00,0x07,0x1c, + + 0x0e,0x0e,0x1c, 0x11,0x0e,0x1c, 0x15,0x0e,0x1c, 0x18,0x0e,0x1c, 0x1c,0x0e,0x1c, 0x1c,0x0e,0x18, 0x1c,0x0e,0x15, 0x1c,0x0e,0x11, + 0x1c,0x0e,0x0e, 0x1c,0x11,0x0e, 0x1c,0x15,0x0e, 0x1c,0x18,0x0e, 0x1c,0x1c,0x0e, 0x18,0x1c,0x0e, 0x15,0x1c,0x0e, 0x11,0x1c,0x0e, + 0x0e,0x1c,0x0e, 0x0e,0x1c,0x11, 0x0e,0x1c,0x15, 0x0e,0x1c,0x18, 0x0e,0x1c,0x1c, 0x0e,0x18,0x1c, 0x0e,0x15,0x1c, 0x0e,0x11,0x1c, + 0x14,0x14,0x1c, 0x16,0x14,0x1c, 0x18,0x14,0x1c, 0x1a,0x14,0x1c, 0x1c,0x14,0x1c, 0x1c,0x14,0x1a, 0x1c,0x14,0x18, 0x1c,0x14,0x16, + 0x1c,0x14,0x14, 0x1c,0x16,0x14, 0x1c,0x18,0x14, 0x1c,0x1a,0x14, 0x1c,0x1c,0x14, 0x1a,0x1c,0x14, 0x18,0x1c,0x14, 0x16,0x1c,0x14, + 0x14,0x1c,0x14, 0x14,0x1c,0x16, 0x14,0x1c,0x18, 0x14,0x1c,0x1a, 0x14,0x1c,0x1c, 0x14,0x1a,0x1c, 0x14,0x18,0x1c, 0x14,0x16,0x1c, + 0x00,0x00,0x10, 0x04,0x00,0x10, 0x08,0x00,0x10, 0x0c,0x00,0x10, 0x10,0x00,0x10, 0x10,0x00,0x0c, 0x10,0x00,0x08, 0x10,0x00,0x04, + 0x10,0x00,0x00, 0x10,0x04,0x00, 0x10,0x08,0x00, 0x10,0x0c,0x00, 0x10,0x10,0x00, 0x0c,0x10,0x00, 0x08,0x10,0x00, 0x04,0x10,0x00, + + 0x00,0x10,0x00, 0x00,0x10,0x04, 0x00,0x10,0x08, 0x00,0x10,0x0c, 0x00,0x10,0x10, 0x00,0x0c,0x10, 0x00,0x08,0x10, 0x00,0x04,0x10, + 0x08,0x08,0x10, 0x0a,0x08,0x10, 0x0c,0x08,0x10, 0x0e,0x08,0x10, 0x10,0x08,0x10, 0x10,0x08,0x0e, 0x10,0x08,0x0c, 0x10,0x08,0x0a, + 0x10,0x08,0x08, 0x10,0x0a,0x08, 0x10,0x0c,0x08, 0x10,0x0e,0x08, 0x10,0x10,0x08, 0x0e,0x10,0x08, 0x0c,0x10,0x08, 0x0a,0x10,0x08, + 0x08,0x10,0x08, 0x08,0x10,0x0a, 0x08,0x10,0x0c, 0x08,0x10,0x0e, 0x08,0x10,0x10, 0x08,0x0e,0x10, 0x08,0x0c,0x10, 0x08,0x0a,0x10, + 0x0b,0x0b,0x10, 0x0c,0x0b,0x10, 0x0d,0x0b,0x10, 0x0f,0x0b,0x10, 0x10,0x0b,0x10, 0x10,0x0b,0x0f, 0x10,0x0b,0x0d, 0x10,0x0b,0x0c, + 0x10,0x0b,0x0b, 0x10,0x0c,0x0b, 0x10,0x0d,0x0b, 0x10,0x0f,0x0b, 0x10,0x10,0x0b, 0x0f,0x10,0x0b, 0x0d,0x10,0x0b, 0x0c,0x10,0x0b, + 0x0b,0x10,0x0b, 0x0b,0x10,0x0c, 0x0b,0x10,0x0d, 0x0b,0x10,0x0f, 0x0b,0x10,0x10, 0x0b,0x0f,0x10, 0x0b,0x0d,0x10, 0x0b,0x0c,0x10, + 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00, 0x00,0x00,0x00 +}; + +static Bit8u static_functionality[0x10]= +{ + /* 0 */ 0xff, // All modes supported #1 + /* 1 */ 0xff, // All modes supported #2 + /* 2 */ 0x0f, // All modes supported #3 + /* 3 */ 0x00, 0x00, 0x00, 0x00, // reserved + /* 7 */ 0x07, // 200, 350, 400 scan lines + /* 8 */ 0xFF, // FIXME i don't know what this is + /* 9 */ 0xFF, // FIXME i don't know what this is + /* a */ 0xe3, // Change to add new functions + /* b */ 0x0c, // Change to add new functions + /* c */ 0x00, // reserved + /* d */ 0x00, // reserved + /* e */ 0x00, // Change to add new functions + /* f */ 0x00 // reserved +}; |