Re: [oc] PUSH/POP Instructions on RISC?

[Ali Mashtizadeh <ali@alikat.org>]

Marko Mlinar wrote:
> 
> > Why are the push/pop instructions never found on risc processors? If a
> > processor has two write backs to the register file it doesn't need that
> OR1k doesn't have two write ports...
Well it's easy to add especially since the regfile is often a dual
ported ram.

> 
> > much more hardware to do post/pre-increment/decrement memory reference
> > instructions. Is there a special reason for not having these
> > instructions? It's simpler than a scaled memory reference reg+c*reg.
> >
> > Ali
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