mirror of https://github.com/bsnes-emu/bsnes.git
37 lines
630 B
C++
37 lines
630 B
C++
auto R6502::io() -> uint8 {
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return read(regs.pc);
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}
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auto R6502::readPC() -> uint8 {
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return read(regs.pc++);
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}
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auto R6502::readSP() -> uint8 {
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return read(0x0100 | ++regs.s);
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}
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auto R6502::readZP(uint8 addr) -> uint8 {
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return read(addr);
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}
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//
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auto R6502::writeSP(uint8 data) -> void {
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write(0x0100 | regs.s--, data);
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}
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auto R6502::writeZP(uint8 addr, uint8 data) -> void {
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write(addr, data);
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}
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//
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auto R6502::ioPage(uint16 x, uint16 y) -> void {
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if(x >> 8 == y >> 8) return;
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read((x & 0xff00) | (y & 0x00ff));
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}
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auto R6502::ioPageAlways(uint16 x, uint16 y) -> void {
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read((x & 0xff00) | (y & 0x00ff));
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}
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