Author: hbelusca
Date: Sat Jun 6 13:21:25 2015
New Revision: 68039
URL: http://svn.reactos.org/svn/reactos?rev=68039&view=rev
Log:
[NTVDM]: Update the character height value in the BDA each time we set up a different graphics font. Also, update the ScreenRows variable accordingly (taken from dosbox).
Modified:
trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
Modified: trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/mvdm/ntvdm/bios…
==============================================================================
--- trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/mvdm/ntvdm/bios/vidbios.c [iso-8859-1] Sat Jun 6 13:21:25 2015
@@ -3068,6 +3068,8 @@
{
switch (getAL())
{
+ // FIXME: At the moment we support only graphics-mode functions!
+
/* Set User 8x8 Graphics Chars (Setup INT 1Fh Vector) */
case 0x20:
{
@@ -3077,11 +3079,56 @@
break;
}
+ /* Set User Graphics Characters */
+ case 0x21:
+ {
+ // /* Write the font to the VGA font plane */
+ // VgaWriteFont(0, Font8x8, ARRAYSIZE(Font8x8) / VGA_FONT_CHARACTERS);
+
+ /* Update the BIOS INT 43h vector */
+ ((PULONG)BaseAddress)[0x43] = MAKELONG(getBP(), getES());
+
+ /* Update BDA */
+ Bda->CharacterHeight = getCX();
+ switch (getBL())
+ {
+ case 0x00: Bda->ScreenRows = getDL()-1; break;
+ case 0x01: Bda->ScreenRows = 13; break;
+ case 0x03: Bda->ScreenRows = 42; break;
+ case 0x02:
+ default : Bda->ScreenRows = 24; break;
+ }
+
+ break;
+ }
+
+ /* Setup ROM 8x14 Font for Graphics Mode */
+ case 0x22:
+ {
+ /* Write the default font to the VGA font plane */
+ VgaWriteFont(0, Font8x14, ARRAYSIZE(Font8x14) / VGA_FONT_CHARACTERS);
+
+ /* Update the BIOS INT 43h vector */
+ // Far pointer to the 8x14 characters 00h-...
+ ((PULONG)BaseAddress)[0x43] = MAKELONG(FONT_8x14_OFFSET, VIDEO_BIOS_DATA_SEG);
+
+ /* Update BDA */
+ Bda->CharacterHeight = 14;
+ switch (getBL())
+ {
+ case 0x00: Bda->ScreenRows = getDL()-1; break;
+ case 0x01: Bda->ScreenRows = 13; break;
+ case 0x03: Bda->ScreenRows = 42; break;
+ case 0x02:
+ default : Bda->ScreenRows = 24; break;
+ }
+
+ break;
+ }
+
/* Setup ROM 8x8 Font for Graphics Mode */
case 0x23:
{
- // FIXME: Use BL and DL for the number of screen rows
-
/* Write the default font to the VGA font plane */
VgaWriteFont(0, Font8x8, ARRAYSIZE(Font8x8) / VGA_FONT_CHARACTERS);
@@ -3089,20 +3136,40 @@
// Far pointer to the 8x8 characters 00h-...
((PULONG)BaseAddress)[0x43] = MAKELONG(FONT_8x8_OFFSET, VIDEO_BIOS_DATA_SEG);
+ /* Update BDA */
+ Bda->CharacterHeight = 8;
+ switch (getBL())
+ {
+ case 0x00: Bda->ScreenRows = getDL()-1; break;
+ case 0x01: Bda->ScreenRows = 13; break;
+ case 0x03: Bda->ScreenRows = 42; break;
+ case 0x02:
+ default : Bda->ScreenRows = 24; break;
+ }
+
break;
}
/* Setup ROM 8x16 Font for Graphics Mode */
case 0x24:
{
- // FIXME: Use BL and DL for the number of screen rows
-
/* Write the default font to the VGA font plane */
VgaWriteFont(0, Font8x16, ARRAYSIZE(Font8x16) / VGA_FONT_CHARACTERS);
/* Update the BIOS INT 43h vector */
// Far pointer to the 8x16 characters 00h-...
((PULONG)BaseAddress)[0x43] = MAKELONG(FONT_8x16_OFFSET, VIDEO_BIOS_DATA_SEG);
+
+ /* Update BDA */
+ Bda->CharacterHeight = 16;
+ switch (getBL())
+ {
+ case 0x00: Bda->ScreenRows = getDL()-1; break;
+ case 0x01: Bda->ScreenRows = 13; break;
+ case 0x03: Bda->ScreenRows = 42; break;
+ case 0x02:
+ default : Bda->ScreenRows = 24; break;
+ }
break;
}