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[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).

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svn path=/trunk/; revision=68039
This commit is contained in:
Hermès Bélusca-Maïto
2015-06-06 13:21:25 +00:00
parent 24a6ef1789
commit 765cdc072a
1 changed files with 71 additions and 4 deletions
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reactos/subsystems/mvdm/ntvdm/bios/vidbios.c
+71 -4
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@@ -3068,6 +3068,8 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
{
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 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
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);
@@ -3089,14 +3136,23 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
// 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);
@@ -3104,6 +3160,17 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
// 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;
}