private static void SET(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
b.VAL = a.VAL;
idcpu.SkipNext = false;
}
private static void BOR(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
b.VAL = (ushort)(b.VAL | a.VAL);
idcpu.SkipNext = false;
}
private static void MUL(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
b.VAL = (ushort)(b.VAL * a.VAL);
idcpu.SkipNext = false;
//TODO: Handle EX
}
private static void SUB(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
b.VAL = (ushort)(b.VAL - a.VAL);
idcpu.SkipNext = false;
//TODO: Handle underflow
}
private static void DVI(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
b.VAL = (ushort)(b.VAL | a.VAL);
idcpu.SkipNext = false;
//TODO: Handle Unsigned
}
private static void STD(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
b.VAL = a.VAL;
idcpu.I--;
idcpu.J--;
idcpu.SkipNext = !(b.VAL < a.VAL);
}
private static void SHL(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
b.VAL = (ushort)(b.VAL << a.VAL);
idcpu.SkipNext = false;
idcpu.EX = (ushort)(((b.VAL << 16) >> a.VAL) & 0xffff);
}
private static void MDI(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
if (a.VAL == 0)
{
b.VAL = 0;
}
else
{
b.VAL = (ushort)(b.VAL % a.VAL);
}
idcpu.SkipNext = false;
}
private static void IFE(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
idcpu.SkipNext = a.VAL != b.VAL;
}
private static void IFU(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
idcpu.SkipNext = !(b.VAL < a.VAL);
}
private static void IFC(IOperandVal a, IOperandVal b, IDCPU idcpu)
{
MovePCToNext(idcpu);
idcpu.SkipNext = (a.VAL & b.VAL) != 0;
}
