Re: [f-cpu] GCC and jmpz vs. jmpl

[devik <devik@cdi.cz>]

> > for inc/dec/neg/cmp.....
> > Who added next cycle ??
>
> The INC unit needs 2 cycles because it became too complex.
> Life's a bitch, you know...

hehehe, what irony ! Incrementer unis has its name after
inc/dec. But now inc/dec are superfluous because they do
the same job as addi $1 with the same time - addi can be
even faster for 8bit chunks.

> The XOR is already there (it's needed for cmple/cmpg/min/max), and the
> `reduce' tree is there as well. I could just tap its result bits and route
> them to the output - but that would still be a 2-cycle operation. That
> is, it won't be any cheaper than `xor.and'.

yes now I know ..

*************************************************************
To unsubscribe, send an e-mail to majordomo@seul.org with
unsubscribe f-cpu       in the body. http://f-cpu.seul.org/