mirror of https://github.com/bsnes-emu/bsnes.git
154 lines
3.0 KiB
C++
154 lines
3.0 KiB
C++
#include <sfc/sfc.hpp>
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#define SATELLAVIEW_EXPANSION_CPP
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namespace SuperFamicom {
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SatellaviewBaseUnit satellaviewbaseunit;
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auto SatellaviewBaseUnit::init() -> void {
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}
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auto SatellaviewBaseUnit::load() -> void {
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bus.map(
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{&SatellaviewBaseUnit::read, &satellaviewbaseunit},
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{&SatellaviewBaseUnit::write, &satellaviewbaseunit},
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0x00, 0x3f, 0x2188, 0x219f
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);
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bus.map(
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{&SatellaviewBaseUnit::read, &satellaviewbaseunit},
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{&SatellaviewBaseUnit::write, &satellaviewbaseunit},
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0x80, 0xbf, 0x2188, 0x219f
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);
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}
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auto SatellaviewBaseUnit::unload() -> void {
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}
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auto SatellaviewBaseUnit::power() -> void {
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}
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auto SatellaviewBaseUnit::reset() -> void {
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memset(®s, 0x00, sizeof regs);
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}
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auto SatellaviewBaseUnit::read(unsigned addr) -> uint8 {
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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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time(&rawtime);
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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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auto SatellaviewBaseUnit::write(unsigned addr, uint8 data) -> void {
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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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}
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