mirror of https://github.com/bsnes-emu/bsnes.git
119 lines
2.0 KiB
C++
Executable File
119 lines
2.0 KiB
C++
Executable File
#ifdef SUPERFX_CPP
|
|
|
|
uint8 SuperFX::mmio_read(unsigned addr) {
|
|
cpu.synchronize_coprocessors();
|
|
addr &= 0xffff;
|
|
|
|
if(addr >= 0x3100 && addr <= 0x32ff) {
|
|
return cache_mmio_read(addr - 0x3100);
|
|
}
|
|
|
|
if(addr >= 0x3000 && addr <= 0x301f) {
|
|
return regs.r[(addr >> 1) & 15] >> ((addr & 1) << 3);
|
|
}
|
|
|
|
switch(addr) {
|
|
case 0x3030: {
|
|
return regs.sfr >> 0;
|
|
}
|
|
|
|
case 0x3031: {
|
|
uint8 r = regs.sfr >> 8;
|
|
regs.sfr.irq = 0;
|
|
cpu.regs.irq = 0;
|
|
return r;
|
|
}
|
|
|
|
case 0x3034: {
|
|
return regs.pbr;
|
|
}
|
|
|
|
case 0x3036: {
|
|
return regs.rombr;
|
|
}
|
|
|
|
case 0x303b: {
|
|
return regs.vcr;
|
|
}
|
|
|
|
case 0x303c: {
|
|
return regs.rambr;
|
|
}
|
|
|
|
case 0x303e: {
|
|
return regs.cbr >> 0;
|
|
}
|
|
|
|
case 0x303f: {
|
|
return regs.cbr >> 8;
|
|
}
|
|
}
|
|
|
|
return 0x00;
|
|
}
|
|
|
|
void SuperFX::mmio_write(unsigned addr, uint8 data) {
|
|
cpu.synchronize_coprocessors();
|
|
addr &= 0xffff;
|
|
|
|
if(addr >= 0x3100 && addr <= 0x32ff) {
|
|
return cache_mmio_write(addr - 0x3100, data);
|
|
}
|
|
|
|
if(addr >= 0x3000 && addr <= 0x301f) {
|
|
unsigned n = (addr >> 1) & 15;
|
|
if((addr & 1) == 0) {
|
|
regs.r[n] = (regs.r[n] & 0xff00) | data;
|
|
} else {
|
|
regs.r[n] = (data << 8) | (regs.r[n] & 0xff);
|
|
}
|
|
|
|
if(addr == 0x301f) regs.sfr.g = 1;
|
|
return;
|
|
}
|
|
|
|
switch(addr) {
|
|
case 0x3030: {
|
|
bool g = regs.sfr.g;
|
|
regs.sfr = (regs.sfr & 0xff00) | (data << 0);
|
|
if(g == 1 && regs.sfr.g == 0) {
|
|
regs.cbr = 0x0000;
|
|
cache_flush();
|
|
}
|
|
} break;
|
|
|
|
case 0x3031: {
|
|
regs.sfr = (data << 8) | (regs.sfr & 0x00ff);
|
|
} break;
|
|
|
|
case 0x3033: {
|
|
regs.bramr = data;
|
|
} break;
|
|
|
|
case 0x3034: {
|
|
regs.pbr = data & 0x7f;
|
|
cache_flush();
|
|
} break;
|
|
|
|
case 0x3037: {
|
|
regs.cfgr = data;
|
|
update_speed();
|
|
} break;
|
|
|
|
case 0x3038: {
|
|
regs.scbr = data;
|
|
} break;
|
|
|
|
case 0x3039: {
|
|
regs.clsr = data;
|
|
update_speed();
|
|
} break;
|
|
|
|
case 0x303a: {
|
|
regs.scmr = data;
|
|
} break;
|
|
}
|
|
}
|
|
|
|
#endif
|