mirror of https://github.com/bsnes-emu/bsnes.git
63 lines
994 B
C++
63 lines
994 B
C++
#include <processor/processor.hpp>
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#include "m68k.hpp"
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namespace Processor {
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enum : uint { Byte, Word, Long };
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enum : bool { Reverse = 1 };
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#include "registers.cpp"
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#include "memory.cpp"
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#include "effective-address.cpp"
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#include "instructions.cpp"
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#include "disassembler.cpp"
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#include "instruction.cpp"
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auto M68K::power() -> void {
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}
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auto M68K::reset() -> void {
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instructionsExecuted = 0;
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for(auto& dr : r.d) dr = 0;
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for(auto& ar : r.a) ar = 0;
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r.sp = 0;
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r.pc = 0;
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r.c = 0;
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r.v = 0;
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r.z = 0;
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r.n = 0;
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r.x = 0;
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r.i = 7;
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r.s = 1;
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r.t = 0;
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r.stop = false;
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r.reset = false;
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}
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auto M68K::supervisor() -> bool {
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if(r.s) return true;
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r.pc -= 2;
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exception(Exception::Unprivileged, Vector::Unprivileged);
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return false;
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}
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auto M68K::exception(uint exception, uint vector, uint priority) -> void {
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auto pc = r.pc;
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auto sr = readSR();
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r.i = priority;
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r.s = 1;
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r.t = 0;
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push<Long>(pc);
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push<Word>(sr);
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r.pc = read<Long>(vector << 2);
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}
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}
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