Re: A83: Flags


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Re: A83: Flags




Here you go:
----------+------+-------------------------------------------- 
  S         S      Sign flag (Bit 7)                            
  Z          Z     Zero flag (Bit 6)                            
  HC          H    Half Carry flag (Bit 4)                      
  P/V          P   Parity/Overflow flag (Bit 2, V=overflow)     
  N             N  Add/Subtract flag (Bit 1)                    
  CY             C Carry flag (Bit 0)                           

Does that help?

James Matthews (matthews@tkb.att.ne.jp)

ICQ: 7413754
http://home.att.ne.jp/gold/tomcat21/index.html
http://library.advanced.org/18242/

----------
> From: Alan C Johnson <benjamin99@juno.com>
> To: assembly-83@lists.ticalc.org
> Subject: Re: A83: Flags
> Date: Saturday, September 26, 1998 3:20 AM
> 
> 
> I haven't seen anything on the flags there.
> 
> >
> >Alan C Johnson wrote:
> >> 
> >> What are all of the Z80's flags?
> >> 
> >
> >read some z80 specifications..
> >
> >In general they are bits set and cleared according to the result of 
> >an
> >instruction
> >Z, the zero flag is for example set if the result of for example a 
> >sub
> >instruction is zero.
> >
> >You use them mainly in conditional jumps
> >
> >To see exactly all flags that exist, and when they are set and 
> >cleared,
> >check the instructions listings for the z80, for example them that is
> >available at ticalc.com, those are the ones I use..
> >
> >
> >//Olle
> >
> 
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