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C140: add bank types

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This commit is contained in:
tildearrow 2023-10-11 02:48:39 -05:00
parent b08f1e656f
commit 8235f6ee66
10 changed files with 107 additions and 9 deletions
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27
src/engine/platform/c140.cpp
View file

@ -271,6 +271,14 @@ void DivPlatformC140::tick(bool sysTick) {
}
}
} else {
switch (bankType) {
case 0:
bank=((bank&8)<<2)|(bank&7);
break;
case 1:
bank=((bank&0x18)<<1)|(bank&7);
break;
}
rWrite(0x04+(i<<4),bank);
}
rWrite(0x06+(i<<4),(start>>8)&0xff);
@ -548,7 +556,15 @@ const void* DivPlatformC140::getSampleMem(int index) {
}
size_t DivPlatformC140::getSampleMemCapacity(int index) {
return index == 0 ? (is219?524288:16777216) : 0;
if (index!=0) return 0;
if (is219) return 524288;
switch (bankType) {
case 0:
return 2097152;
case 1:
return 4194304;
}
return 16777216;
}
size_t DivPlatformC140::getSampleMemUsage(int index) {
@ -562,7 +578,7 @@ bool DivPlatformC140::isSampleLoaded(int index, int sample) {
}
void DivPlatformC140::renderSamples(int sysID) {
memset(sampleMem,0,getSampleMemCapacity());
memset(sampleMem,0,is219?524288:16777216);
memset(sampleOff,0,256*sizeof(unsigned int));
memset(sampleLoaded,0,256*sizeof(bool));
@ -701,6 +717,10 @@ void DivPlatformC140::setFlags(const DivConfig& flags) {
CHECK_CUSTOM_CLOCK;
rate=chipClock/192;
}
bankType=flags.getInt("bankType",0);
if (!is219) {
c140_bank_type(&c140,bankType);
}
for (int i=0; i<totalChans; i++) {
oscBuf[i]->rate=rate;
}
@ -710,12 +730,13 @@ int DivPlatformC140::init(DivEngine* p, int channels, int sugRate, const DivConf
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
bankType=2;
for (int i=0; i<totalChans; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
sampleMem=new unsigned char[getSampleMemCapacity()];
sampleMem=new unsigned char[is219?524288:16777216];
sampleMemLen=0;
if (is219) {
c219_init(&c219);

1
src/engine/platform/c140.h
View file

@ -60,6 +60,7 @@ class DivPlatformC140: public DivDispatch {
bool is219;
int totalChans;
unsigned char groupBank[4];
unsigned char bankType;
unsigned char* sampleMem;
size_t sampleMemLen;

16
src/engine/platform/sound/c140_c219.c
View file

@ -333,6 +333,11 @@ void c219_reset(struct c219_t *c219)
}
}
// TILDEARROW
void c140_bank_type(struct c140_t *c140, unsigned char type) {
c140->bank_type = type;
}
void c140_write(struct c140_t *c140, const unsigned short addr, const unsigned char data)
{
// voice register
@ -345,7 +350,16 @@ void c140_write(struct c140_t *c140, const unsigned short addr, const unsigned c
case 0x1: voice->lvol = data; break;
case 0x2: voice->freq = (voice->freq & ~0xff00) | (unsigned int)(data << 8); break;
case 0x3: voice->freq = (voice->freq & ~0x00ff) | data; break;
case 0x4: voice->bank = data; break;
case 0x4: { // TILDEARROW
if (c140->bank_type == 0) {
voice->bank = ((data&0x20)>>2)|data&7;
} else if (c140->bank_type == 1) {
voice->bank = ((data&0x30)>>1)|data&7;
} else {
voice->bank = data;
}
break;
}
case 0x5:
voice->compressed = c140_bit(data, 3);
voice->loop = c140_bit(data, 4);

5
src/engine/platform/sound/c140_c219.h
View file

@ -5,7 +5,7 @@
MODIFIED Namco C140/C219 sound emulator - MODIFIED VERSION
by cam900
MODIFICATION by tildearrow - adds muting function
MODIFICATION by tildearrow - adds muting function AND VGM banking
THIS IS NOT THE ORIGINAL VERSION - you can find the original one in
commit 72d04777c013988ed8cf6da27c62a9d784a59dff
@ -78,6 +78,7 @@ struct c140_t
signed int lout, rout;
signed short mulaw[256];
signed short *sample_mem;
unsigned char bank_type;
};
struct c219_t
@ -106,6 +107,8 @@ void c140_write(struct c140_t *c140, const unsigned short addr, const unsigned c
void c219_write(struct c219_t *c219, const unsigned short addr, const unsigned char data);
void c140_bank_type(struct c140_t *c140, unsigned char type);
void c140_init(struct c140_t *c140);
void c219_init(struct c219_t *c219);