Re: [f-cpu] new manual version

[Michael Riepe <michael@stud.uni-hannover.de>]

On Mon, Feb 18, 2002 at 09:50:50AM -0700, Ben Franchuk wrote:
[...]
> Would modified INC/DEC unit be useful for +2,4,8 -2,4,8 constants
> and another INC/DEC instruction. I am thinking of a language like
> FORTH where they pop and push stuff on a stack like mad and use 
> of the general adder could be a bottle neck on this kind of address
> calculation.

We still have the option to do that with the original instruction
(there are some free bits because the instruction is 1r1w).
And we don't need a separate unit either, we just have to leave the
least significant bits alone.

-- 
 Michael "Tired" Riepe <Michael.Riepe@stud.uni-hannover.de>
 "All I wanna do is have a little fun before I die"
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