public Condition NotEquals(U8 v)
{
if (v != 0 || Flags.Zero.LastReg != this)
{
CPU6502.CPY(v);
}
return(Condition.NotEqualsZero);
}
public static void Init()
{
//Copy funcs to those RAM chunks
Y.Set(0);
Loop.Do_old(_ => {
AddrWriteVerify[Y].Set(A.Set(LabelFor(_WriteVerify)[Y]));
Y.Increment();
CPU6502.CPY(_lenTotalRamLength);
}).While(() => Y.NotEquals(0));
}
/// <summary>
///
/// </summary>
/// <param name="start">Inclusive</param>
/// <param name="length">Exclusive</param>
/// <param name="block"></param>
public static void Repeat(IndexingRegister reg, int length, Action <LoopLabels> block)
{
var labels = new LoopLabels();
//X.Reset();
var lblStart = Labels.New();
Context.Write(lblStart);
Context.New(() => {
var before = reg.State.Hash;
block.Invoke(labels);
reg.State.Verify(before);
Context.Write(labels.ContinueLabel);
reg.Inc();
if (Context.StartBranchable)
{
if (length < 256)
{
if (reg is RegisterX)
{
CPU6502.CPX((U8)length);
}
else
{
CPU6502.CPY((U8)length);
}
}
CPU6502.BNE(Context.Start);
}
else
{
//TODO: verify this works!
if (length < 256)
{
if (reg is RegisterX)
{
CPU6502.CPX((U8)length);
}
else
{
CPU6502.CPY((U8)length);
}
}
CPU6502.BEQ(3);
GoTo(lblStart);
}
});
Context.Write(labels.BreakLabel);
}
public Condition LessThan(IOperand o)
{
CPU6502.CPY(o);
return(Condition.IsLessThan);
}
public Condition NotEquals(IOperand addr)
{
CPU6502.CPY(addr);
return(Condition.NotEqualsZero);
}