void LoadStateUnknown(SPUFreeze_t * pF)
{
int i;
for(i=0;i<MAXCHAN;i++)
{
s_chan[i].bStop=0;
s_chan[i].pLoop=spuMemC;
}
dwNewChannel=0;
dwChannelOn=0;
dwChannelDead=0;
pSpuIrq=0;
for(i=0;i<0xc0;i++)
{
SPUwriteRegister(0x1f801c00+i*2,regArea[i]);
}
}
void LoadStateUnknown(SPUFreeze_t * pF)
{
int i;
for(i=0;i<MAXCHAN;i++)
{
s_chan[i].bOn=0;
s_chan[i].bNew=0;
s_chan[i].bStop=0;
s_chan[i].ADSR.lVolume=0;
s_chan[i].pLoop=spuMemC + (unsigned long)(0x1010);
s_chan[i].pStart=spuMemC + (unsigned long)(0x1010);
s_chan[i].iMute=0;
s_chan[i].iIrqDone=0;
}
dwNewChannel=0;
pSpuIrq=0;
for(i=0;i<0xc0;i++)
{
SPUwriteRegister(0x1f801c00+i*2,regArea[i]);
}
}
void CALLBACK ZN_SPUwriteRegister(unsigned long reg, unsigned short val)
{
SPUwriteRegister(reg,val);
}
int32_t spx_start(uint8_t *buffer, uint32_t length)
{
int i;
uint16_t reg;
if (strncmp((char *)buffer, "SPU", 3) && strncmp((char *)buffer, "SPX", 3))
{
return AO_FAIL;
}
start_of_file = buffer;
SPUinit();
SPUopen();
setlength(~0, 0);
// upload the SPU RAM image
SPUinjectRAMImage((unsigned short *)&buffer[0]);
// apply the register image
for (i = 0; i < 512; i += 2)
{
reg = buffer[0x80000+i] | buffer[0x80000+i+1]<<8;
SPUwriteRegister((i/2)+0x1f801c00, reg);
}
old_fmt = 1;
if ((buffer[0x80200] != 0x44) || (buffer[0x80201] != 0xac) || (buffer[0x80202] != 0x00) || (buffer[0x80203] != 0x00))
{
old_fmt = 0;
}
if (old_fmt)
{
num_events = buffer[0x80204] | buffer[0x80205]<<8 | buffer[0x80206]<<16 | buffer[0x80207]<<24;
if (((num_events * 12) + 0x80208) > length)
{
old_fmt = 0;
}
else
{
cur_tick = 0;
}
}
if (!old_fmt)
{
end_tick = buffer[0x80200] | buffer[0x80201]<<8 | buffer[0x80202]<<16 | buffer[0x80203]<<24;
cur_tick = buffer[0x80204] | buffer[0x80205]<<8 | buffer[0x80206]<<16 | buffer[0x80207]<<24;
next_tick = cur_tick;
}
song_ptr = &buffer[0x80208];
cur_event = 0;
strncpy((char *)&buffer[4], name, 128);
strncpy((char *)&buffer[0x44], song, 128);
strncpy((char *)&buffer[0x84], company, 128);
return AO_SUCCESS;
}
static void spx_tick(void)
{
uint32_t time, reg, size;
uint16_t rdata;
uint8_t opcode;
if (old_fmt)
{
time = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
while ((time == cur_tick) && (cur_event < num_events))
{
reg = song_ptr[4] | song_ptr[5]<<8 | song_ptr[6]<<16 | song_ptr[7]<<24;
rdata = song_ptr[8] | song_ptr[9]<<8;
SPUwriteRegister(reg, rdata);
cur_event++;
song_ptr += 12;
time = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
}
}
else
{
if (cur_tick < end_tick)
{
while (cur_tick == next_tick)
{
opcode = song_ptr[0];
song_ptr++;
switch (opcode)
{
case 0: // write register
reg = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
rdata = song_ptr[4] | song_ptr[5]<<8;
SPUwriteRegister(reg, rdata);
next_tick = song_ptr[6] | song_ptr[7]<<8 | song_ptr[8]<<16 | song_ptr[9]<<24;
song_ptr += 10;
break;
case 1: // read register
reg = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
SPUreadRegister(reg);
next_tick = song_ptr[4] | song_ptr[5]<<8 | song_ptr[6]<<16 | song_ptr[7]<<24;
song_ptr += 8;
break;
case 2: // dma write
size = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
song_ptr += (4 + size);
next_tick = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
song_ptr += 4;
break;
case 3: // dma read
next_tick = song_ptr[4] | song_ptr[5]<<8 | song_ptr[6]<<16 | song_ptr[7]<<24;
song_ptr += 8;
break;
case 4: // xa play
song_ptr += (32 + 16384);
next_tick = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
song_ptr += 4;
break;
case 5: // cdda play
size = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
song_ptr += (4 + size);
next_tick = song_ptr[0] | song_ptr[1]<<8 | song_ptr[2]<<16 | song_ptr[3]<<24;
song_ptr += 4;
break;
default:
printf("Unknown opcode %d\n", opcode);
exit(-1);
break;
}
}
}
}
cur_tick++;
}
