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Add Seta/Allumer X1-010 Support

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its 16 channel wavetable/PCM chip, with (optional) stereo support.
Its also has envelope, this feature has similar as AY PSG's one but its shape is also stored at RAM, and each nibble in envelope data is for each output: so i decided to added some feature for more stereo-ish envelope.
Split: Envelope shape will be splitted to Left and Right half for each output.
HInv, Vinv: Envelope shape will be Horizontally/Vertically mirrored the left one.

Max sample length is sample bank size of Seta 2 arcade hardware (currently not emulated yet, nor it doesn't support on VGM).

Chip id is temporary, it can be changed with to suggestions.
This commit is contained in:
cam900 2022-03-07 02:31:03 +09:00
parent 6ce2a6743c
commit 4a83c7c5a7
27 changed files with 1340 additions and 25 deletions
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34
src/engine/engine.cpp
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@ -532,6 +532,36 @@ void DivEngine::renderSamples() {
memPos+=length+16;
}
qsoundMemLen=memPos+256;
// step 4: allocate x1-010 pcm samples
if (x1_010Mem==NULL) x1_010Mem=new unsigned char[1048576];
memset(x1_010Mem,0,1048576);
memPos=0;
for (int i=0; i<song.sampleLen; i++) {
DivSample* s=song.sample[i];
int paddedLen=(s->length8+4095)&(~0xfff);
// fit sample bank size to 128KB for Seta 2 external bankswitching logic (not emulated yet!)
if (paddedLen>131072) {
paddedLen=131072;
}
if ((memPos&0xfe0000)!=((memPos+paddedLen)&0xfe0000)) {
memPos=(memPos+0x1ffff)&0xfe0000;
}
if (memPos>=1048576) {
logW("out of X1-010 memory for sample %d!\n",i);
break;
}
if (memPos+paddedLen>=1048576) {
memcpy(x1_010Mem+memPos,s->data8,1048576-memPos);
logW("out of X1-010 memory for sample %d!\n",i);
} else {
memcpy(x1_010Mem+memPos,s->data8,paddedLen);
}
s->offX1_010=memPos;
memPos+=paddedLen;
}
x1_010MemLen=memPos+256;
}
void DivEngine::createNew(const int* description) {
@ -950,7 +980,9 @@ int DivEngine::getEffectiveSampleRate(int rate) {
case DIV_SYSTEM_QSOUND:
return (24038*MIN(65535,(rate*4096/24038)))/4096;
case DIV_SYSTEM_YM2610: case DIV_SYSTEM_YM2610_EXT: case DIV_SYSTEM_YM2610_FULL: case DIV_SYSTEM_YM2610_FULL_EXT: case DIV_SYSTEM_YM2610B: case DIV_SYSTEM_YM2610B_EXT:
return 18518;
return 18518; // TODO: support ADPCM-B case
case DIV_SYSTEM_X1_010:
return (31250*MIN(255,(rate*16/31250)))/16; // TODO: support variable clock case
default:
break;
}