mirror of https://github.com/bsnes-emu/bsnes.git
141 lines
2.8 KiB
C++
Executable File
141 lines
2.8 KiB
C++
Executable File
#ifdef BSX_CPP
|
|
|
|
BSXBase bsxbase;
|
|
|
|
void BSXBase::init() {
|
|
}
|
|
|
|
void BSXBase::enable() {
|
|
for(uint16 i = 0x2188; i <= 0x219f; i++) memory::mmio.map(i, *this);
|
|
}
|
|
|
|
void BSXBase::power() {
|
|
reset();
|
|
}
|
|
|
|
void BSXBase::reset() {
|
|
memset(®s, 0x00, sizeof regs);
|
|
}
|
|
|
|
uint8 BSXBase::mmio_read(unsigned addr) {
|
|
addr &= 0xffff;
|
|
|
|
switch(addr) {
|
|
case 0x2188: return regs.r2188;
|
|
case 0x2189: return regs.r2189;
|
|
case 0x218a: return regs.r218a;
|
|
case 0x218c: return regs.r218c;
|
|
case 0x218e: return regs.r218e;
|
|
case 0x218f: return regs.r218f;
|
|
case 0x2190: return regs.r2190;
|
|
|
|
case 0x2192: {
|
|
unsigned counter = regs.r2192_counter++;
|
|
if(regs.r2192_counter >= 18) regs.r2192_counter = 0;
|
|
|
|
if(counter == 0) {
|
|
time_t rawtime;
|
|
time(&rawtime);
|
|
tm *t = localtime(&rawtime);
|
|
|
|
regs.r2192_hour = t->tm_hour;
|
|
regs.r2192_minute = t->tm_min;
|
|
regs.r2192_second = t->tm_sec;
|
|
}
|
|
|
|
switch(counter) {
|
|
case 0: return 0x00; //???
|
|
case 1: return 0x00; //???
|
|
case 2: return 0x00; //???
|
|
case 3: return 0x00; //???
|
|
case 4: return 0x00; //???
|
|
case 5: return 0x01;
|
|
case 6: return 0x01;
|
|
case 7: return 0x00;
|
|
case 8: return 0x00;
|
|
case 9: return 0x00;
|
|
case 10: return regs.r2192_second;
|
|
case 11: return regs.r2192_minute;
|
|
case 12: return regs.r2192_hour;
|
|
case 13: return 0x00; //???
|
|
case 14: return 0x00; //???
|
|
case 15: return 0x00; //???
|
|
case 16: return 0x00; //???
|
|
case 17: return 0x00; //???
|
|
}
|
|
} break;
|
|
|
|
case 0x2193: return regs.r2193 & ~0x0c;
|
|
case 0x2194: return regs.r2194;
|
|
case 0x2196: return regs.r2196;
|
|
case 0x2197: return regs.r2197;
|
|
case 0x2199: return regs.r2199;
|
|
}
|
|
|
|
return cpu.regs.mdr;
|
|
}
|
|
|
|
void BSXBase::mmio_write(unsigned addr, uint8 data) {
|
|
addr &= 0xffff;
|
|
|
|
switch(addr) {
|
|
case 0x2188: {
|
|
regs.r2188 = data;
|
|
} break;
|
|
|
|
case 0x2189: {
|
|
regs.r2189 = data;
|
|
} break;
|
|
|
|
case 0x218a: {
|
|
regs.r218a = data;
|
|
} break;
|
|
|
|
case 0x218b: {
|
|
regs.r218b = data;
|
|
} break;
|
|
|
|
case 0x218c: {
|
|
regs.r218c = data;
|
|
} break;
|
|
|
|
case 0x218e: {
|
|
regs.r218e = data;
|
|
} break;
|
|
|
|
case 0x218f: {
|
|
regs.r218e >>= 1;
|
|
regs.r218e = regs.r218f - regs.r218e;
|
|
regs.r218f >>= 1;
|
|
} break;
|
|
|
|
case 0x2191: {
|
|
regs.r2191 = data;
|
|
regs.r2192_counter = 0;
|
|
} break;
|
|
|
|
case 0x2192: {
|
|
regs.r2190 = 0x80;
|
|
} break;
|
|
|
|
case 0x2193: {
|
|
regs.r2193 = data;
|
|
} break;
|
|
|
|
case 0x2194: {
|
|
regs.r2194 = data;
|
|
} break;
|
|
|
|
case 0x2197: {
|
|
regs.r2197 = data;
|
|
} break;
|
|
|
|
case 0x2199: {
|
|
regs.r2199 = data;
|
|
} break;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|