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INT10 EGA: Implement font intensity/blinking switch, fix font height calculation, screen parameters - makes Norton Commander work with machine=ega.

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@3619
This commit is contained in:
Ralf Grillenberger 2010-07-09 20:56:32 +00:00
parent f30cf339c3
commit 47281bd3e5
3 changed files with 51 additions and 28 deletions
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12
src/ints/int10.cpp
View file

@ -138,8 +138,7 @@ static Bitu INT10_Handler(void) {
reg_ah=(Bit8u)real_readw(BIOSMEM_SEG,BIOSMEM_NB_COLS);
break;
case 0x10: /* Palette functions */
if ((machine==MCH_CGA) || ((!IS_VGA_ARCH) && (reg_al>0x02))) break;
//TODO: subfunction 0x03 for ega
if ((machine==MCH_CGA) || ((!IS_VGA_ARCH) && (reg_al>0x03))) break;
switch (reg_al) {
case 0x00: /* SET SINGLE PALETTE REGISTER */
INT10_SetSinglePaletteRegister(reg_bl,reg_bh);
@ -302,13 +301,8 @@ graphics_chars:
break;
}
if ((reg_bh<=7) || (svgaCard==SVGA_TsengET4K)) {
if (machine==MCH_EGA) {
reg_cx=0x0e;
reg_dl=0x18;
} else {
reg_cx=real_readw(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
reg_dl=real_readb(BIOSMEM_SEG,BIOSMEM_NB_ROWS);
}
reg_cx=real_readw(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT);
reg_dl=real_readb(BIOSMEM_SEG,BIOSMEM_NB_ROWS);
}
break;
default:

16
src/ints/int10_memory.cpp
View file

@ -66,9 +66,21 @@ void INT10_LoadFont(PhysPt font,bool reload,Bitu count,Bitu offset,Bitu map,Bitu
Bit16u base=real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS);
IO_Write(base,0x9);
IO_Write(base+1,(IO_Read(base+1) & 0xe0)|(height-1));
//Vertical display end bios says, but should stay the same?
// Vertical display end bios says, but should stay the same?
// Not on EGA.
Bitu rows = CurMode->sheight/height;
if (machine==MCH_EGA) {
Bitu displayend = rows*height - 1;
IO_Write(base,0x12);
IO_Write(base+1,(Bit8u)(displayend & 0xff));
IO_Write(base,0x7);
// Note: IBM EGA registers can't be read
Bitu v_overflow = IO_Read(base+1) & ~0x2;
if (displayend & 0x100) v_overflow |= 0x2;
IO_Write(base+1,(Bit8u)v_overflow);
}
//Rows setting in bios segment
real_writeb(BIOSMEM_SEG,BIOSMEM_NB_ROWS,(CurMode->sheight/height)-1);
real_writeb(BIOSMEM_SEG,BIOSMEM_NB_ROWS,rows-1);
real_writeb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,(Bit8u)height);
//TODO Reprogram cursor size?
}

51
src/ints/int10_pal.cpp
View file

@ -96,25 +96,42 @@ void INT10_SetAllPaletteRegisters(PhysPt data) {
}
void INT10_ToggleBlinkingBit(Bit8u state) {
Bit8u value;
// state&=0x01;
if ((state>1) && (svgaCard==SVGA_S3Trio)) return;
ResetACTL();
IO_Write(VGAREG_ACTL_ADDRESS,0x10);
value=IO_Read(VGAREG_ACTL_READ_DATA);
if (state<=1) {
value&=0xf7;
value|=state<<3;
}
if(IS_VGA_ARCH) {
Bit8u value;
// state&=0x01;
if ((state>1) && (svgaCard==SVGA_S3Trio)) return;
ResetACTL();
IO_Write(VGAREG_ACTL_ADDRESS,0x10);
value=IO_Read(VGAREG_ACTL_READ_DATA);
if (state<=1) {
value&=0xf7;
value|=state<<3;
}
ResetACTL();
IO_Write(VGAREG_ACTL_ADDRESS,0x10);
IO_Write(VGAREG_ACTL_WRITE_DATA,value);
IO_Write(VGAREG_ACTL_ADDRESS,32); //Enable output and protect palette
ResetACTL();
IO_Write(VGAREG_ACTL_ADDRESS,0x10);
IO_Write(VGAREG_ACTL_WRITE_DATA,value);
IO_Write(VGAREG_ACTL_ADDRESS,32); //Enable output and protect palette
if (state<=1) {
Bit8u msrval=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR)&0xdf;
if (state<=1) {
Bit8u msrval=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR)&0xdf;
if (state) msrval|=0x20;
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,msrval);
}
} else { // EGA
// Usually it reads this from the mode list in ROM
if (CurMode->type!=M_TEXT) return;
Bit8u value = (CurMode->cwidth==9)? 0x4:0x0;
if (state) value |= 0x8;
ResetACTL();
IO_Write(VGAREG_ACTL_ADDRESS,0x10);
IO_Write(VGAREG_ACTL_WRITE_DATA,value);
IO_Write(VGAREG_ACTL_ADDRESS,0x20);
Bit8u msrval=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR)& ~0x20;
if (state) msrval|=0x20;
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,msrval);
}