mirror of https://github.com/bsnes-emu/bsnes.git
79 lines
1.3 KiB
C++
79 lines
1.3 KiB
C++
//26 es:
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//2e cs:
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//36 ss:
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//3e ds:
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auto V30MZ::opSegment(uint16 segment) {
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if(prefixes.size() >= 7) prefixes.removeRight();
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prefixes.prepend(opcode);
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state.prefix = true;
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state.poll = false;
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}
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//f2 repnz:
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//f3 repz:
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auto V30MZ::opRepeat(bool flag) {
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if(prefixes.size() >= 7) prefixes.removeRight();
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prefixes.prepend(opcode);
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wait(4);
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state.prefix = true;
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state.poll = false;
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}
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//f0 lock:
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auto V30MZ::opLock() {
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if(prefixes.size() >= 7) prefixes.removeRight();
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prefixes.prepend(opcode);
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state.prefix = true;
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state.poll = false;
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}
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//9b wait
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auto V30MZ::opWait() {
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}
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//f4 hlt
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auto V30MZ::opHalt() {
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wait(8);
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state.halt = true;
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}
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//90 nop
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auto V30MZ::opNop() {
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}
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auto V30MZ::opIn(Size size) {
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wait(5);
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setAcc(size, in(size, fetch()));
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}
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auto V30MZ::opOut(Size size) {
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wait(5);
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out(size, fetch(), getAcc(size));
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}
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auto V30MZ::opInDX(Size size) {
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wait(5);
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setAcc(size, in(size, r.dx));
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}
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auto V30MZ::opOutDX(Size size) {
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wait(5);
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out(size, r.dx, getAcc(size));
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}
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//d7 xlat
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auto V30MZ::opTranslate() {
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wait(4);
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r.al = read(Byte, segment(r.ds), r.bx + r.al);
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}
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//62 bound reg,mem,mem
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auto V30MZ::opBound() {
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wait(12);
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modRM();
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auto lo = getMem(Word, 0);
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auto hi = getMem(Word, 2);
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auto reg = getReg(Word);
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if(reg < lo || reg > hi) interrupt(5);
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}
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