mirror of
https://github.com/rodamaral/lsnes.git
synced 2025-04-02 10:42:15 -04:00
7379b4570e
Instead of using time() in chip emulation, create new interface method currentTime(), defaulting to time(0). This way frontend can cleanly override the current time bsnes is using.
142 lines
3.1 KiB
C++
Executable file
142 lines
3.1 KiB
C++
Executable file
#ifdef BSX_CPP
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BSXSatellaview bsxsatellaview;
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void BSXSatellaview::init() {
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}
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void BSXSatellaview::load() {
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bus.map(Bus::MapMode::Direct, 0x00, 0x3f, 0x2188, 0x219f, { &BSXSatellaview::mmio_read, &bsxsatellaview }, { &BSXSatellaview::mmio_write, &bsxsatellaview });
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bus.map(Bus::MapMode::Direct, 0x80, 0xbf, 0x2188, 0x219f, { &BSXSatellaview::mmio_read, &bsxsatellaview }, { &BSXSatellaview::mmio_write, &bsxsatellaview });
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}
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void BSXSatellaview::unload() {
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}
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void BSXSatellaview::power() {
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}
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void BSXSatellaview::reset() {
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memset(®s, 0x00, sizeof regs);
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}
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uint8 BSXSatellaview::mmio_read(unsigned addr) {
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addr &= 0xffff;
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switch(addr) {
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case 0x2188: return regs.r2188;
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case 0x2189: return regs.r2189;
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case 0x218a: return regs.r218a;
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case 0x218c: return regs.r218c;
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case 0x218e: return regs.r218e;
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case 0x218f: return regs.r218f;
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case 0x2190: return regs.r2190;
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case 0x2192: {
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unsigned counter = regs.r2192_counter++;
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if(regs.r2192_counter >= 18) regs.r2192_counter = 0;
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if(counter == 0) {
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time_t rawtime;
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rawtime = SNES::interface->currentTime();
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tm *t = localtime(&rawtime);
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regs.r2192_hour = t->tm_hour;
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regs.r2192_minute = t->tm_min;
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regs.r2192_second = t->tm_sec;
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}
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switch(counter) {
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case 0: return 0x00; //???
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case 1: return 0x00; //???
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case 2: return 0x00; //???
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case 3: return 0x00; //???
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case 4: return 0x00; //???
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case 5: return 0x01;
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case 6: return 0x01;
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case 7: return 0x00;
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case 8: return 0x00;
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case 9: return 0x00;
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case 10: return regs.r2192_second;
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case 11: return regs.r2192_minute;
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case 12: return regs.r2192_hour;
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case 13: return 0x00; //???
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case 14: return 0x00; //???
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case 15: return 0x00; //???
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case 16: return 0x00; //???
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case 17: return 0x00; //???
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}
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} break;
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case 0x2193: return regs.r2193 & ~0x0c;
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case 0x2194: return regs.r2194;
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case 0x2196: return regs.r2196;
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case 0x2197: return regs.r2197;
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case 0x2199: return regs.r2199;
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}
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return cpu.regs.mdr;
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}
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void BSXSatellaview::mmio_write(unsigned addr, uint8 data) {
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addr &= 0xffff;
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switch(addr) {
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case 0x2188: {
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regs.r2188 = data;
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} break;
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case 0x2189: {
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regs.r2189 = data;
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} break;
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case 0x218a: {
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regs.r218a = data;
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} break;
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case 0x218b: {
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regs.r218b = data;
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} break;
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case 0x218c: {
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regs.r218c = data;
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} break;
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case 0x218e: {
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regs.r218e = data;
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} break;
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case 0x218f: {
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regs.r218e >>= 1;
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regs.r218e = regs.r218f - regs.r218e;
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regs.r218f >>= 1;
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} break;
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case 0x2191: {
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regs.r2191 = data;
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regs.r2192_counter = 0;
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} break;
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case 0x2192: {
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regs.r2190 = 0x80;
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} break;
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case 0x2193: {
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regs.r2193 = data;
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} break;
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case 0x2194: {
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regs.r2194 = data;
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} break;
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case 0x2197: {
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regs.r2197 = data;
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} break;
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case 0x2199: {
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regs.r2199 = data;
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} break;
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}
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}
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#endif
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