mirror of https://github.com/bsnes-emu/bsnes.git
40 lines
624 B
C++
40 lines
624 B
C++
auto HuC6280::mmu(uint16 addr) const -> uint21 {
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return r.mpr[addr.bits(13,15)] << 13 | addr.bits(0,12);
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}
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//
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auto HuC6280::load(uint16 addr) -> uint8 {
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step(r.cs);
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return read(mmu(addr));
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}
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auto HuC6280::store(uint16 addr, uint8 data) -> void {
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step(r.cs);
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return write(mmu(addr), data);
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}
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//
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auto HuC6280::io() -> uint8 {
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return load(r.pc);
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}
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auto HuC6280::opcode() -> uint8 {
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return load(r.pc++);
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}
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auto HuC6280::operand() -> uint8 {
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return load(r.pc++);
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}
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//
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auto HuC6280::push(uint8 data) -> void {
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store(0x2100 + ++S, data);
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}
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auto HuC6280::pull() -> uint8 {
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return load(0x2100 + S--);
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}
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