Re: LZ: Help with a routine


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Re: LZ: Help with a routine



On Thu, 19 Sep 1996, Ryan Myers wrote:


> I need to know how to use the BIT opcode... the specific routine requires me
> to test the MSB (first bit) of a byte and branch if it is 1.  Can someone
> please fill me in?


For RAM, there are two forms you can use:
	BIT 1,(HL)
        BIT 1,(IX + offset)  ; or you can use IY instead.


This will set the Z flag to 1 if the bit you're testing is a 0.


 HTH,
 Dan Knapp


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