RE: [colorforth] Machineforth IFs

[Fréderic DUBOIS <frederic.dubois@xxxxxxxxxxxxx>]

Well, I was rather looking for "design" techniques. I'm aware of only one,
factoring the IFs inside a generic words so that "higher" IFs disappear (
like MIN or MAX or their primitive, SORT). That's the kind of thing you've
done with ?1+, I guess.



> -----Message d'origine-----
> De : Frank Kujawski [mailto:frank@xxxxxxxxxxxx]
> Envoyé : lun. 27 janvier 2003 16:21
> À : colorforth@xxxxxxxxxxxxxxxxxx
> Cc : Frank Kujawski
> Objet : Re: [colorforth] Machineforth IFs
> 
> 
> I have been playing with the idea of flags.  Two is all that 
> I seem to use 
> regularly, zero and carry.  all alu instructions would set 
> the flag, and a 
> compare instruction.  (cmp would compare the top two values, but only 
> drop the top value.)  I also have included 4 'if' command they are 
> jmp[not](zero|carry), I did also find it convient to add one other 
> instruction, ?1+, inc if carry set.
> 	Frank
> 
> > Is there particular techniques which are to be used with 
> machineforth IFs? 
> > 

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