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new z80 scheduling method, timers are still wip

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@459 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-05-25 21:25:46 +00:00
parent 170435846c
commit 4b9c588826
15 changed files with 377 additions and 364 deletions
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17
Pico/sound/ym2612.c
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@ -116,7 +116,7 @@
#ifndef EXTERNAL_YM2612
#include <stdlib.h>
// let it be 1 global to simplify things
static YM2612 ym2612;
YM2612 ym2612;
#else
extern YM2612 *ym2612_940;
@ -1584,11 +1584,8 @@ static int OPNWriteReg(int r, int v)
/* YM2612 local section */
/*******************************************************************************/
int *ym2612_dacen;
INT32 *ym2612_dacout;
FM_ST *ym2612_st;
/* Generate samples for YM2612 */
int YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty)
{
@ -1654,8 +1651,6 @@ int YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty)
void YM2612Init_(int clock, int rate)
{
// notaz
ym2612_dacen = &ym2612.dacen;
ym2612_dacout = &ym2612.dacout;
ym2612_st = &ym2612.OPN.ST;
memset(&ym2612, 0, sizeof(ym2612));
@ -1728,9 +1723,6 @@ int YM2612Write_(unsigned int a, unsigned int v)
}
addr = ym2612.OPN.ST.address;
#ifndef EXTERNAL_YM2612
ym2612.REGS[addr] = v;
#endif
switch( addr & 0xf0 )
{
@ -1747,6 +1739,7 @@ int YM2612Write_(unsigned int a, unsigned int v)
ym2612.OPN.lfo_inc = 0;
}
break;
#if 0 // handled elsewhere
case 0x24: { // timer A High 8
int TAnew = (ym2612.OPN.ST.TA & 0x03)|(((int)v)<<2);
if(ym2612.OPN.ST.TA != TAnew) {
@ -1781,6 +1774,7 @@ int YM2612Write_(unsigned int a, unsigned int v)
set_timers( v );
ret=0;
break;
#endif
case 0x28: /* key on / off */
{
UINT8 c;
@ -1794,6 +1788,7 @@ int YM2612Write_(unsigned int a, unsigned int v)
if(v&0x80) FM_KEYON(c,SLOT4); else FM_KEYOFF(c,SLOT4);
break;
}
#if 0
case 0x2a: /* DAC data (YM2612) */
ym2612.dacout = ((int)v - 0x80) << 6; /* level unknown (notaz: 8 seems to be too much) */
ret=0;
@ -1803,6 +1798,7 @@ int YM2612Write_(unsigned int a, unsigned int v)
ym2612.dacen = v & 0x80;
ret=0;
break;
#endif
default:
break;
}
@ -1826,9 +1822,6 @@ int YM2612Write_(unsigned int a, unsigned int v)
}
addr = ym2612.OPN.ST.address | 0x100;
#ifndef EXTERNAL_YM2612
ym2612.REGS[addr] = v;
#endif
ret = OPNWriteReg(addr, v);
break;