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Fix CGA to always use 8-pixel-height characters

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Allofich
2021-11-07 20:49:09 +09:00
parent fcad90f048
commit 61e15da9d8
3 changed files with 6 additions and 2 deletions
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4
CHANGELOG
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@@ -27,6 +27,10 @@
apply when REP or REPZ is used. (Allofich) apply when REP or REPZ is used. (Allofich)
- Fixed 0x0F opcode being valid on 80186 core when - Fixed 0x0F opcode being valid on 80186 core when
it should be invalid. (Allofich) it should be invalid. (Allofich)
- Fixed CGA modes to always use a character height
of 8, rather than reading it from address 485h.
Fixes corrupt graphics in the PC Booter version
of Apple Panic. (Allofich)
- Fixed possible crash with printing. (jamesbond3142) - Fixed possible crash with printing. (jamesbond3142)
- Video emulation for PC-98 mode (for 400-line modes) - Video emulation for PC-98 mode (for 400-line modes)
is now 16:10 instead of 4:3. 480-line PC-98 modes is now 16:10 instead of 4:3. 480-line PC-98 modes

2
src/ints/int10.cpp
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@@ -1140,7 +1140,7 @@ static void INT10_Seg40Init(void) {
} }
else { else {
real_writeb(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL,0x00); real_writeb(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL,0x00);
if (machine == MCH_TANDY || machine == MCH_CGA || machine == MCH_PCJR) if (machine == MCH_TANDY || machine == MCH_PCJR)
real_writeb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,8); /* FIXME: INT 10h teletext routines depend on this */ real_writeb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,8); /* FIXME: INT 10h teletext routines depend on this */
else else
real_writeb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,0); real_writeb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,0);

2
src/ints/int10_char.cpp
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@@ -1529,7 +1529,7 @@ void WriteChar(uint16_t col,uint16_t row,uint8_t page,uint16_t chr,uint8_t attr,
/* Externally used by the mouse routine */ /* Externally used by the mouse routine */
PhysPt fontdata; PhysPt fontdata;
uint16_t cols = real_readw(BIOSMEM_SEG,BIOSMEM_NB_COLS); uint16_t cols = real_readw(BIOSMEM_SEG,BIOSMEM_NB_COLS);
uint8_t back, cheight = IS_PC98_ARCH ? 16 : real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT); uint8_t back, cheight = IS_PC98_ARCH ? 16 : machine == MCH_CGA ? 8 : real_readb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
if (CurMode->type != M_PC98) if (CurMode->type != M_PC98)
chr &= 0xFF; chr &= 0xFF;