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Removed obsolete INT 13 hard disk emulation.

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This commit is contained in:
TomW 2013-07-07 13:26:46 +01:00
commit c9aa6dc3a9
3 changed files with 1 additions and 157 deletions
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2
src/Makefile.mingw
View file

@ -4,7 +4,7 @@ CC = gcc.exe
WINDRES = windres.exe
CFLAGS = -O3 -march=i686 -fomit-frame-pointer
OBJ = 386.o 808x.o acer386sx.o ali1429.o amstrad.o cdrom-ioctl.o \
config.o cpu.o dac.o device.o dma.o ega.o fdc.o harddisk.o \
config.o cpu.o dac.o device.o dma.o ega.o fdc.o \
headland.o i430vx.o ide.o io.o jim.o keyboard.o keyboard_amstrad.o keyboard_at.o \
keyboard_olim24.o keyboard_xt.o lpt.o mcr.o mem.o model.o \
mouse.o mouse_ps2.o mouse_serial.o neat.o nvr.o olivetti_m24.o \

155
src/harddisk.c
View file

@ -1,155 +0,0 @@
/*Due to the lack of a real hard disc BIOS (other than the WD ST-506 one in MESS),
I wrote this. It's better as it can handle bigger discs, but is (potentially)
less compatible.*/
#include <stdio.h>
#include <string.h>
#include "ibm.h"
extern int output;
void inithdc()
{
return;
hdc[0].f=romfopen("hdc.img","rb+");
if (!hdc[0].f)
{
hdc[0].f=romfopen("hdc.img","wb");
putc(0,hdc[0].f);
fclose(hdc[0].f);
hdc[0].f=romfopen("hdc.img","rb+");
}
// hdc[0].spt=16;
// hdc[0].hpc=5;
// hdc[0].tracks=977;
hdc[1].f=romfopen("hdd.img","rb+");
if (!hdc[1].f)
{
hdc[1].f=romfopen("hdd.img","wb");
putc(0,hdc[1].f);
fclose(hdc[1].f);
hdc[1].f=romfopen("hdd.img","rb+");
}
// hdc[1].spt=32;
// hdc[1].hpc=16;
// hdc[1].tracks=447;
}
void int13hdc()
{
int drv=DL&1;
int track,head,sector;
uint32_t addr;
int c,d;
uint8_t buf[512];
fullspeed();
// ram[0x475]=2;
// printf("INT 13 HDC %04X %04X %04X %04X %04X:%04X\n",AX,BX,CX,DX,CS,pc);
switch (AH)
{
case 0: /*Reset disk system*/
AH=0;
flags&=~C_FLAG;
break;
case 2: /*Read sectors into memory*/
// printf("Read %i sectors to %04X:%04X\n",AL,es>>4,BX);
// if (es==0xf940) output=3;
track=CH|((CL&0xC0)<<2);
sector=(CL&63)-1;
head=DH;
addr=((((track*hdc[drv].hpc)+head)*hdc[drv].spt)+sector)*512;
// printf("Read track %i head %i sector %i addr %08X HPC %i SPT %i %08X\n",track,head,sector,addr,hdc[drv].hpc,hdc[drv].spt,old8);
fseek(hdc[drv].f,addr,SEEK_SET);
for (c=0;c<AL;c++)
{
fread(buf,512,1,hdc[drv].f);
for (d=0;d<512;d++)
{
writemembl(es+BX+(c*512)+d,buf[d]/*getc(hdc[drv].f)*/);
}
}
AH=0;
flags&=~C_FLAG;
readflash=1;
break;
case 3: /*Write sectors*/
track=CH|((CL&0xC0)<<2);
sector=(CL&63)-1;
head=DH;
addr=((((track*hdc[drv].hpc)+head)*hdc[drv].spt)+sector)*512;
fseek(hdc[drv].f,addr,SEEK_SET);
for (c=0;c<AL;c++)
{
for (d=0;d<512;d++)
{
putc(readmembl(es+BX+(c*512)+d),hdc[drv].f);
}
}
AH=0;
flags&=~C_FLAG;
readflash=1;
break;
case 4: /*Verify sectors*/
AH=0; /*We don't actually do anything here*/
flags&=~C_FLAG;
break;
case 8: /*Get drive parameters*/
AH=0;
CH=hdc[drv].tracks&255;
CL=hdc[drv].spt;
CL|=((hdc[drv].tracks>>2)&0xC0);
// printf("Drive params - %02X %02X %i %i\n",CL,CH,hdc[drv].tracks,hdc[drv].spt);
DH=hdc[drv].hpc-1;
DL=2;
flags&=~C_FLAG;
break;
case 0x10: /*Check drive ready*/
AH=0;
flags&=~C_FLAG;
break;
case 0x18: /*Set media type*/
AH=1;
flags|=C_FLAG;
break;
default:
AH=1;
flags|=C_FLAG;
// printf("Bad HDC int 13 %04X\n",AX);
// dumpregs();
// exit(-1);
}
}
char tempbuf[512*63];
void resizedrive(int drv)
{
FILE *f;
int c,d,e;
// char temp[512*63];
if (!drv)
{
fflush(hdc[0].f);
if (hdc[0].f) fclose(hdc[0].f);
f=romfopen("hdc.img","wb");
}
else
{
fflush(hdc[1].f);
if (hdc[1].f) fclose(hdc[1].f);
f=romfopen("hdd.img","wb");
}
memset(tempbuf,0,512*63);
for (c=0;c<hdc[drv].tracks;c++)
{
for (d=0;d<hdc[drv].hpc;d++)
{
// for (e=0;e<hdc[drv].spt;e++)
// {
fwrite(tempbuf,512*hdc[drv].spt,1,f);
// }
}
}
fclose(f);
if (!drv) hdc[0].f=romfopen("hdc.img","rb+");
else hdc[1].f=romfopen("hdd.img","rb+");
}

1
src/pc.c
View file

@ -220,7 +220,6 @@ void initpc()
//loadfont();
loadnvr();
sound_init();
inithdc();
resetide();
ioctl_open(cdrom_drive);
model_init();