public Branch execute(Processor cpu) {
cpu.flagOp1 = (byte) op1.get8(cpu);
cpu.flagOp2 = (byte) immb;
cpu.flagResult = (byte) (cpu.flagOp1 - cpu.flagOp2);
cpu.flagIns = UCodes.SUB8;
cpu.flagStatus = OSZAPC;
return Branch.None;
}
public Branch execute(Processor cpu) {
Reg op1 = cpu.regs[op1Index];
cpu.of = cpu.af = cpu.cf = false;
cpu.flagResult = (byte) (op1.get8() ^ op2.get8(cpu));
op1.set8((byte) cpu.flagResult);
cpu.flagStatus = SZP;
return Branch.None;
}
public Branch execute(Processor cpu) {
Reg op2 = cpu.regs[op2Index];
int add = (cpu.cf() ? 1 : 0);
cpu.flagOp1 = op1.get8(cpu);
cpu.flagOp2 = op2.get8();
cpu.flagResult = (byte) (cpu.flagOp1 - (cpu.flagOp2 + add));
op1.set8(cpu, (byte) cpu.flagResult);
cpu.flagIns = UCodes.SBB8;
cpu.flagStatus = OSZAPC;
return Branch.None;
}
public Branch execute(Processor cpu) {
op1.set8(cpu, (byte) ~op1.get8(cpu));
return Branch.None;
}