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dosbox-staging/src/ints/int10.cpp
Sjoerd van der Berg 155cbb9f36 New Video bios code: 
Support for VESA 1.2
Support for text mode font changes
Support for setting CGA colors
Support for setting text mode cursor shape
Support for 16 color palette group changes
Some initial tandy mode support
Some fixes with graphics mode text output
Some cleanups


Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1060
2003-06-15 19:37:57 +00:00

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/*
* Copyright (C) 2002-2003 The DOSBox Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include "dosbox.h"
#include "bios.h"
#include "mem.h"
#include "callback.h"
#include "regs.h"
#include "video.h"
#include "inout.h"
#include "int10.h"
#include "../hardware/vga.h" /* Maybe move this thing */
Int10Data int10;
static Bitu call_10;
static bool warned_ff=false;
static Bitu INT10_Handler(void) {
#if 0
switch (reg_ah) {
case 0x02:
case 0x03:
case 0x09:
case 0xc:
case 0xd:
case 0x0e:
case 0x10:
case 0x4f:
break;
default:
LOG(LOG_INT10,LOG_NORMAL)("Function AX:%04X , BX %04X",reg_ax,reg_bx);
break;
}
#endif
switch (reg_ah) {
case 0x00: /* Set VideoMode */
INT10_SetVideoMode(reg_al);
break;
case 0x01: /* Set TextMode Cursor Shape */
INT10_SetCursorShape(reg_ch,reg_cl);
break;
case 0x02: /* Set Cursor Pos */
INT10_SetCursorPos(reg_dh,reg_dl,reg_bh);
break;
case 0x03: /* get Cursor Pos and Cursor Shape*/
reg_ah=0;
reg_dl=CURSOR_POS_COL(reg_bh);
reg_dh=CURSOR_POS_ROW(reg_bh);
reg_cx=real_readw(BIOSMEM_SEG,BIOSMEM_CURSOR_TYPE);
break;
case 0x04: /* read light pen pos YEAH RIGHT */
/* Light pen is not supported */
reg_ah=0;
break;
case 0x05: /* Set Active Page */
if (reg_al & 0x80) LOG(LOG_INT10,LOG_NORMAL)("Func %x",reg_al);
else INT10_SetActivePage(reg_al);
break;
case 0x06: /* Scroll Up */
INT10_ScrollWindow(reg_ch,reg_cl,reg_dh,reg_dl,-reg_al,reg_bh,0xFF);
break;
case 0x07: /* Scroll Down */
INT10_ScrollWindow(reg_ch,reg_cl,reg_dh,reg_dl,reg_al,reg_bh,0xFF);
break;
case 0x08: /* Read character & attribute at cursor */
INT10_ReadCharAttr(&reg_ax,reg_bh);
break;
case 0x09: /* Write Character & Attribute at cursor CX times */
INT10_WriteChar(reg_al,reg_bl,reg_bh,reg_cx,true);
break;
case 0x0A: /* Write Character at cursor CX times */
INT10_WriteChar(reg_al,reg_bl,reg_bh,reg_cx,false);
break;
case 0x0B: /* Set Background/Border Colour & Set Palette*/
switch (reg_bh) {
case 0x00: //Background/Border color
INT10_SetBackgroundBorder(reg_bl);
break;
case 0x01: //Set color Select
INT10_SetColorSelect(reg_bl);
break;
}
break;
case 0x0C: /* Write Graphics Pixel */
INT10_PutPixel(reg_cx,reg_dx,reg_bh,reg_al);
break;
case 0x0D: /* Read Graphics Pixel */
INT10_GetPixel(reg_cx,reg_dx,reg_bh,&reg_al);
break;
case 0x0E: /* Teletype OutPut */
INT10_TeletypeOutput(reg_al,reg_bl,false,reg_bh);
break;
case 0x0F: /* Get videomode */
reg_bh=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_PAGE);
reg_al=real_readb(BIOSMEM_SEG,BIOSMEM_CURRENT_MODE);
reg_ah=(Bit8u)real_readw(BIOSMEM_SEG,BIOSMEM_NB_COLS);
break;
case 0x10: /* EGA/VGA Palette functions */
switch (reg_al) {
case 0x00: /* SET SINGLE PALETTE REGISTER */
INT10_SetSinglePaletteRegister(reg_bl,reg_bh);
break;
case 0x01: /* SET BORDER (OVERSCAN) COLOR*/
INT10_SetOverscanBorderColor(reg_bh);
break;
case 0x02: /* SET ALL PALETTE REGISTERS */
INT10_SetAllPaletteRegisters(SegPhys(es)+reg_dx);
break;
case 0x03: /* TOGGLE INTENSITY/BLINKING BIT */
INT10_ToggleBlinkingBit(reg_bl);
break;
case 0x07: /* GET SINGLE PALETTE REGISTER */
INT10_GetSinglePaletteRegister(reg_bl,&reg_bh);
break;
case 0x08: /* READ OVERSCAN (BORDER COLOR) REGISTER */
INT10_GetOverscanBorderColor(&reg_bh);
break;
case 0x09: /* READ ALL PALETTE REGISTERS AND OVERSCAN REGISTER */
INT10_GetAllPaletteRegisters(SegPhys(es)+reg_dx);
break;
case 0x10: /* SET INDIVIDUAL DAC REGISTER */
INT10_SetSingleDacRegister(reg_bl,reg_dh,reg_ch,reg_cl);
break;
case 0x12: /* SET BLOCK OF DAC REGISTERS */
INT10_SetDACBlock(reg_bx,reg_cx,SegPhys(es)+reg_dx);
break;
case 0x13: /* SELECT VIDEO DAC COLOR PAGE */
INT10_SelectDACPage(reg_bl,reg_bh);
break;
case 0x15: /* GET INDIVIDUAL DAC REGISTER */
INT10_GetSingleDacRegister(reg_bl,&reg_dh,&reg_ch,&reg_cl);
break;
case 0x17: /* GET BLOCK OF DAC REGISTER */
INT10_GetDACBlock(reg_bx,reg_cx,SegPhys(es)+reg_dx);
break;
case 0x18: /* undocumented - SET PEL MASK */
INT10_SetPelMask(reg_bl);
break;
case 0x19: /* undocumented - GET PEL MASK */
INT10_GetPelMask(reg_bl);
break;
default:
LOG(LOG_INT10,LOG_ERROR)("Function 10:Unhandled EGA/VGA Palette Function %2X",reg_al);
}
break;
case 0x11: /* Character generator functions */
switch (reg_al) {
/* Textmode calls */
case 0x00: /* Load user font */
case 0x10:
INT10_LoadFont(SegPhys(es)+reg_bp,reg_al==0x10,reg_cx,reg_dx,reg_bl,reg_bh);
break;
case 0x01: /* Load 8x14 font */
case 0x11:
INT10_LoadFont(Real2Phys(int10.rom.font_14),true,256,0,0,14);
break;
case 0x02: /* Load 8x8 font */
case 0x12:
INT10_LoadFont(Real2Phys(int10.rom.font_8_first),true,256,0,0,8);
break;
/* Graphics mode calls */
case 0x20: /* Set User 8x8 Graphics characters */
RealSetVec(0x1f,RealMake(SegValue(es),reg_bp));
break;
case 0x21: /* Set user graphics characters */
RealSetVec(0x43,RealMake(SegValue(es),reg_bp));
real_writew(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,reg_cx);
goto graphics_chars;
case 0x22: /* Rom 8x14 set */
RealSetVec(0x43,int10.rom.font_14);
real_writew(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,14);
goto graphics_chars;
// case 0x23: /* Rom 8x8 double dot set */
//TODO
case 0x24: /* Rom 8x16 set */
RealSetVec(0x43,int10.rom.font_16);
real_writew(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,16);
goto graphics_chars;
graphics_chars:
switch (reg_bl) {
case 0x00:real_writeb(BIOSMEM_SEG,BIOSMEM_NB_ROWS,reg_dl-1);break;
case 0x01:real_writeb(BIOSMEM_SEG,BIOSMEM_NB_ROWS,13);break;
case 0x03:real_writeb(BIOSMEM_SEG,BIOSMEM_NB_ROWS,42);break;
case 0x02:
default:real_writeb(BIOSMEM_SEG,BIOSMEM_NB_ROWS,24);break;
}
break;
/* General */
case 0x30:/* Get Font Information */
switch (reg_bh) {
case 0x00: /* interupt 0x1f vector */
{
RealPt int_1f=RealGetVec(0x1f);
SegSet16(es,RealSeg(int_1f));
reg_bp=RealOff(int_1f);
reg_cx=8;
}
break;
case 0x01: /* interupt 0x43 vector */
{
RealPt int_43=RealGetVec(0x43);
SegSet16(es,RealSeg(int_43));
reg_bp=RealOff(int_43);
reg_cx=8;
}
break;
case 0x02: /* font 8x14 */
SegSet16(es,RealSeg(int10.rom.font_14));
reg_bp=RealOff(int10.rom.font_14);
reg_cx=14;
break;
case 0x03: /* font 8x8 first 128 */
SegSet16(es,RealSeg(int10.rom.font_8_first));
reg_bp=RealOff(int10.rom.font_8_first);
reg_cx=8;
break;
case 0x04: /* font 8x8 second 128 */
SegSet16(es,RealSeg(int10.rom.font_8_second));
reg_bp=RealOff(int10.rom.font_8_second);
reg_cx=8;
break;
case 0x06: /* font 8x16 */
SegSet16(es,RealSeg(int10.rom.font_16));
reg_bp=RealOff(int10.rom.font_16);
reg_cx=16;
break;
default:
reg_cx=16;
LOG(LOG_INT10,LOG_ERROR)("Fucntion 11:30 Request for font %2X",reg_bh);
}
reg_dl=real_readb(BIOSMEM_SEG,BIOSMEM_NB_ROWS);
break;
default:
LOG(LOG_INT10,LOG_ERROR)("Function 11:Unsupported character generator call %2X",reg_al);
}
break;
case 0x12: /* alternate function select */
switch (reg_bl) {
case 0x10: /* Get EGA Information */
{
reg_bh=(real_readw(BIOSMEM_SEG,BIOSMEM_CRTC_ADDRESS)==0x3B4);
reg_bl=3; //256 kb
reg_cx=real_readb(BIOSMEM_SEG,BIOSMEM_SWITCHES) & 0x0F;
break;
}
case 0x36: /* VGA Refresh control */
/*
Call disables/enables the vga from outputting video,
don't support it, but fake a success return
*/
reg_al=0x12;
break;
default:
LOG(LOG_INT10,LOG_ERROR)("Function 12:Call %2X not handled",reg_bl);
reg_al=0x12; //Always fake a success call
}
break;
case 0x13: /* Write String */
INT10_WriteString(reg_dh,reg_dl,reg_al,reg_bl,SegPhys(es)+reg_bp,reg_cx,reg_bh);
break;
case 0x1A: /* Display Combination */
if (reg_al==0) {
reg_bx=real_readb(BIOSMEM_SEG,BIOSMEM_DCC_INDEX);
reg_al=0x1A;
break;
}
if (reg_al==1) {
real_writeb(BIOSMEM_SEG,BIOSMEM_DCC_INDEX,reg_bl);
reg_al=0x1A;
break;
}
break;
case 0x1B: /* functionality State Information */
switch (reg_bx) {
case 0x0000:
INT10_GetFuncStateInformation(SegPhys(es)+reg_di);
reg_al=0x1B;
break;
default:
LOG(LOG_INT10,LOG_ERROR)("1B:Unhandled call BX %2X",reg_bx);
}
break;
case 0x4f: /* VESA Calls */
switch (reg_al) {
case 0x00: /* Get SVGA Information */
reg_al=0x4f;
reg_ah=VESA_GetSVGAInformation(SegValue(es),reg_di);
break;
case 0x01: /* Get SVGA Mode Information */
reg_al=0x4f;
reg_ah=VESA_GetSVGAModeInformation(reg_cx,SegValue(es),reg_di);
break;
case 0x02: /* Set videomode */
reg_al=0x4f;
reg_ah=VESA_SetSVGAMode(reg_bx);
break;
case 0x03: /* Get videomode */
reg_al=0x4f;
reg_ah=VESA_GetSVGAMode(reg_bx);
break;
case 0x05:
if (reg_bh==0) { /* Set CPU Window */
reg_ah=VESA_SetCPUWindow(reg_bl,reg_dx);
reg_al=0x4f;
} else if (reg_bh == 1) { /* Get CPU Window */
reg_ah=VESA_GetCPUWindow(reg_bl,reg_dx);
reg_al=0x4f;
} else {
LOG(LOG_INT10,LOG_ERROR)("Unhandled VESA Function %X Subfunction %X",reg_al,reg_bh);
reg_ah=0x01;
}
break;
case 0x07:
switch (reg_bl) {
case 0x80: /* Set Display Start during retrace ?? */
case 0x00: /* Set display Start */
reg_al=0x4f;
reg_ah=VESA_SetDisplayStart(reg_cx,reg_dx);
break;
case 0x01:
reg_al=0x4f;
reg_bh=0x00; //Weird?
reg_ah=VESA_GetDisplayStart(reg_cx,reg_dx);
break;
default:
LOG(LOG_INT10,LOG_ERROR)("Unhandled VESA Function %X Subfunction %X",reg_al,reg_bl);
reg_ah=0x1;
}
break;
case 0x09:
switch (reg_bl) {
case 0x80: /* Set Palette during retrace */
//TODO
case 0x00: /* Set Palette */
reg_ah=VESA_SetPalette(SegPhys(es)+reg_di,reg_dx,reg_cx);
reg_al=0x4f;
break;
case 0x01: /* Get Palette */
reg_ah=VESA_GetPalette(SegPhys(es)+reg_di,reg_dx,reg_cx);
reg_al=0x4f;
break;
default:
LOG(LOG_INT10,LOG_ERROR)("Unhandled VESA Function %X Subfunction %X",reg_al,reg_bl);
reg_ah=0x01;
}
break;
default:
LOG(LOG_INT10,LOG_ERROR)("Unhandled VESA Function %X",reg_al);
reg_al=0x0;
}
break;
case 0xff:
if (!warned_ff) LOG(LOG_INT10,LOG_NORMAL)("INT10:FF:Weird NC call");
warned_ff=true;
break;
default:
LOG(LOG_INT10,LOG_ERROR)("Function %2X not supported",reg_ah);
};
return CBRET_NONE;
}
static void INT10_Seg40Init(void) {
//This should fill the ega vga structures
// init detected hardware BIOS Area
real_writew(BIOSMEM_SEG,BIOSMEM_INITIAL_MODE,real_readw(BIOSMEM_SEG,BIOSMEM_INITIAL_MODE)&0xFFCF);
// Just for the first int10 find its children
// the default char height
real_writeb(BIOSMEM_SEG,BIOSMEM_CHAR_HEIGHT,16);
// Clear the screen
real_writeb(BIOSMEM_SEG,BIOSMEM_VIDEO_CTL,0x60);
// Set the basic screen we have
real_writeb(BIOSMEM_SEG,BIOSMEM_SWITCHES,0xF9);
// Set the basic modeset options
real_writeb(BIOSMEM_SEG,BIOSMEM_MODESET_CTL,0x51);
// Set the default MSR
real_writeb(BIOSMEM_SEG,BIOSMEM_CURRENT_MSR,0x09);
}
static void INT10_InitVGA(void) {
/* switch to color mode and enable CPU access 480 lines */
IO_Write(0x3c2,0xc3);
/* More than 64k */
IO_Write(0x3c4,0x04);
IO_Write(0x3c5,0x02);
};
void INT10_Init(Section* sec) {
INT10_InitVGA();
/* Setup the INT 10 vector */
call_10=CALLBACK_Allocate();
CALLBACK_Setup(call_10,&INT10_Handler,CB_IRET);
RealSetVec(0x10,CALLBACK_RealPointer(call_10));
//Init the 0x40 segment and init the datastructures in the the video rom area
INT10_SetupRomMemory();
INT10_Seg40Init();
INT10_SetupVESA();
INT10_SetVideoMode(3);
};
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