- cirrus extension: tables for mode 1280x1024x8 added

- vbe: dispi_set_xres() and dispi_set_virt_width() now modify vga compatible registers
- vbe: mode list entry for mode 800x600x4 fixed

3 files changed, 76 insertions, 7 deletions

diff --git a/clext.c b/clext.c
index e0ff9ac..050e2e8 100644
--- a/clext.c
+++ b/clext.c
@@ -207,6 +207,21 @@ unsigned short ccrtc_1024x768x24[] = {
 0x001a,0x321b,0x001d,
 0xffff
 };
+/* 1280x1024x8 */
+unsigned short cseq_1280x1024x8[] = {
+0x0300,0x2101,0x0f02,0x0003,0x0e04,0x1107,
+0x760b,0x760c,0x760d,0x760e,
+0x0412,0x0013,0x2017,
+0x341b,0x341c,0x341d,0x341e,
+0xffff
+};
+unsigned short ccrtc_1280x1024x8[] = {
+0x2911,0xc300,0x9f01,0x9f02,0x8603,0x8304,0x9405,0x2406,0xf707,
+0x6009,0x000c,0x000d,
+0x0310,0xff12,0xa013,0x4014,0xff15,0x2416,0xc317,0xff18,
+0x001a,0x221b,0x001d,
+0xffff
+};
 
 
 cirrus_mode_t cirrus_modes[] =
@@ -251,6 +266,10 @@ cirrus_mode_t cirrus_modes[] =
    cseq_1024x768x24,cgraph_svgacolor,ccrtc_1024x768x24,24,
    6,8,16,8,8,8,0,0,0},
 
+ {0x6d,1280,1024,8,0x00,
+   cseq_1280x1024x8,cgraph_svgacolor,ccrtc_1280x1024x8,8,
+   4,0,0,0,0,0,0,0,0},
+
  {0xfe,0,0,0,0,cseq_vga,cgraph_vga,ccrtc_vga,0,
    0xff,0,0,0,0,0,0,0,0},
  {0xff,0,0,0,0,0,0,0,0,
@@ -292,6 +311,8 @@ unsigned short cirrus_vesa_modelist[] = {
   0x117, 0x74,
 // 1024x768x24
 //0x118, 0x79,
+// 1280x1024x8
+  0x107, 0x6d,
 // invalid
   0xffff,0xffff
 };
diff --git a/vbe.c b/vbe.c
index 4c2ad10..075ec99 100644
--- a/vbe.c
+++ b/vbe.c
@@ -162,8 +162,37 @@ ASM_END
 static void dispi_set_xres(xres)
   Bit16u xres;
 {
-  outw(VBE_DISPI_IOPORT_INDEX,VBE_DISPI_INDEX_XRES);
-  outw(VBE_DISPI_IOPORT_DATA,xres);
+ASM_START
+  push bp
+  mov  bp, sp
+  push ax
+  push dx
+
+  mov  dx, # VBE_DISPI_IOPORT_INDEX
+  mov  ax, # VBE_DISPI_INDEX_XRES
+  out  dx, ax
+  mov  dx, # VBE_DISPI_IOPORT_DATA
+  mov  ax, 4[bp] ; xres
+  out  dx, ax
+  push ax
+  mov  dx, #0x03d4
+  mov  ax, #0x0011
+  out  dx, ax
+  mov  dx, #0x03d4
+  pop  ax
+  push ax
+  shr  ax, #3
+  dec  ax
+  mov  ah, al
+  mov  al, #0x01
+  out  dx, ax
+  pop  ax
+  call vga_set_virt_width
+
+  pop  dx
+  pop  ax
+  pop  bp
+ASM_END
 }
 
 static void dispi_set_yres(yres)
@@ -239,9 +268,7 @@ dispi_get_enable:
   in   ax, dx
   pop  dx
   ret
-ASM_END
 
-ASM_START
 _dispi_set_bank:
   push dx
   push ax
@@ -339,7 +366,28 @@ dispi_get_y_offset:
   pop  dx
   ret
 
+vga_set_virt_width:
+  push ax
+  push bx
+  push dx
+  mov  bx, ax
+  call dispi_get_bpp
+  cmp  al, #0x04
+  ja   set_width_svga
+  shr  bx, #2
+set_width_svga:
+  shr  bx, #2
+  mov  dx, #0x03d4
+  mov  ah, bl
+  mov  al, #0x13
+  out  dx, ax
+  pop  dx
+  pop  bx
+  pop  ax
+  ret
+
 dispi_set_virt_width:
+  call vga_set_virt_width
   push dx
   push ax
   mov  dx, # VBE_DISPI_IOPORT_INDEX
@@ -718,9 +766,9 @@ Bit16u *AX;Bit16u BX; Bit16u ES;Bit16u DI;
                   biosfn_set_video_mode(0x6a);
                 }
 
+                dispi_set_bpp(cur_info->info.BitsPerPixel);
                 dispi_set_xres(cur_info->info.XResolution);
                 dispi_set_yres(cur_info->info.YResolution);
-                dispi_set_bpp(cur_info->info.BitsPerPixel);
                 dispi_set_bank(0);
                 dispi_set_enable(VBE_DISPI_ENABLED | no_clear | lfb_flag);
 
diff --git a/vbetables.h b/vbetables.h
index c9a1a79..a742ac7 100644
--- a/vbetables.h
+++ b/vbetables.h
@@ -185,10 +185,10 @@ static ModeInfoListItem mode_info_list[]=
    /*Bit8u  YCharSize*/                 16,
    /*Bit8u  NumberOfPlanes*/            4,
    /*Bit8u  BitsPerPixel*/              4,
-   /*Bit8u  NumberOfBanks*/             1,
+   /*Bit8u  NumberOfBanks*/             16,
    /*Bit8u  MemoryModel*/               VBE_MEMORYMODEL_PLANAR,
    /*Bit8u  BankSize*/                  0,
-   /*Bit8u  NumberOfImagePages*/        0,
+   /*Bit8u  NumberOfImagePages*/        15,
    /*Bit8u  Reserved_page*/             0,
 // Direct Color fields (required for direct/6 and YUV/7 memory models)
    /*Bit8u  RedMaskSize*/               0,