Re: LZ: Help with a routine


[Prev][Next][Index][Thread]

Re: LZ: Help with a routine



> Sure.  BIT is easy.  All it does is compliment the bit you test and 
> then puts that in the zero flag.
> For example:
>     BIT 7,a
> tests the MSB of the accumulator.  If the bit is 1, then the zero 
> flag is cleared, indicating "not zero".  (Right?)  If the bit is 0, 
> then the zero flag is set, indicating "zero".
> 
> Got that?  ;)
> --------
> >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?
> 
> ____
> ~Keith
> FFNP69C@PRODIGY.COM
> 


Actually, I think that if the bit is set, it will set the ZERO 
flag, but if it is cleared, then it will clear the Z flag (indicating 
nz).


-Ed


References: