mirror of
https://github.com/86Box/86Box.git
synced 2026-02-23 01:48:21 -07:00
f6ef1f833c
Thoroughly clean up the code to vastly reduce the number of compiler warnings and found and fixed several bugs in the process; Applied all mainline PCem commits; Added SCSI hard disk emulation; Commented out all unfinished machines and graphics cards; Added the AOpen AP53 and ASUS P/I-P55T2 machines as well as another Tyan 440FX machine, all three with AMI WinBIOS (patch from TheCollector1995); Added the Diamond Stealth 3D 3000 (S3 ViRGE/VX) graphics card (patch from TheCollector1995); Added the PS/2 XT IDE (AccuLogic) HDD Controller (patch from TheCollector1995); Added Microsoft/Logitech Bus Mouse emulation (patch from waltje); Overhauled the makefiles (patch from waltje); Added the Adaptec AHA-1542CF SCSI controller (patch from waltje); Added preliminary (but still unfinished) Adaptec AHA-154x SCSI controller BIOS support (patch from waltje); Added an ISABugger debugging device (patch from waltje); Added sanity checks to the Direct3D code.
71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
/* Copyright holders: Sarah Walker
|
|
see COPYING for more details
|
|
*/
|
|
#include "ibm.h"
|
|
#include "dac.h"
|
|
|
|
uint8_t dac,dac2;
|
|
uint8_t dacctrl;
|
|
int lptfifo;
|
|
uint8_t dssbuffer[16];
|
|
int dssstart=0,dssend=0;
|
|
int dssmode=0;
|
|
|
|
void writedac(uint16_t addr, uint8_t val)
|
|
{
|
|
if (dssmode) dac2=val;
|
|
else dac=val;
|
|
}
|
|
|
|
void writedacctrl(uint16_t addr, uint8_t val)
|
|
{
|
|
if (dacctrl&8 && !(val&8) && (lptfifo!=16))
|
|
{
|
|
dssbuffer[dssend++]=dac2;
|
|
dssend&=15;
|
|
lptfifo++;
|
|
}
|
|
dacctrl=val;
|
|
}
|
|
|
|
uint8_t readdacfifo()
|
|
{
|
|
if (lptfifo==16) return 0x40;
|
|
return 0;
|
|
}
|
|
|
|
void pollss()
|
|
{
|
|
if (lptfifo)
|
|
{
|
|
dac=dssbuffer[dssstart++];
|
|
dssstart&=15;
|
|
lptfifo--;
|
|
}
|
|
}
|
|
|
|
int16_t dacbuffer[SOUNDBUFLEN+20];
|
|
int dacbufferpos=0;
|
|
void getdacsamp()
|
|
{
|
|
if (dacbufferpos<SOUNDBUFLEN+20) dacbuffer[dacbufferpos++]=(((int)(unsigned int)dac)-0x80)*0x20;
|
|
}
|
|
|
|
void adddac(int16_t *p)
|
|
{
|
|
int c;
|
|
if (dacbufferpos>SOUNDBUFLEN) dacbufferpos=SOUNDBUFLEN;
|
|
for (c=0;c<dacbufferpos;c++)
|
|
{
|
|
p[c<<1]+=(dacbuffer[c]);
|
|
p[(c<<1)+1]+=(dacbuffer[c]);
|
|
}
|
|
for (;c<SOUNDBUFLEN;c++)
|
|
{
|
|
p[c<<1]+=(dacbuffer[dacbufferpos-1]);
|
|
p[(c<<1)+1]+=(dacbuffer[dacbufferpos-1]);
|
|
}
|
|
dacbufferpos=0;
|
|
}
|
|
|