Re: [f-cpu] signed cmpl

[ben franchuk <bfranchuk@jetnet.ab.ca>]

nico wrote:

> Ouch, what a decoder mess ! field  in the opcode are a great think to
> reduice decoder complexity, if you mix adresseing mode/flag/opcode you
> will need 3 cycles for decode :)
Well the 8,16,32,64+ ints do make for a messy instruction set.
Maybe we need a better high level programing langauge instead
of C.

> Because of the "risc rules" (to keep decode simple) adressing mode
> must not be too complexe.
Instruction scheduling rather than simple decodeing ( gates are cheap )
seems to be the main reason to keep preditable delay paths.

> And not linux kernel and Hurd ? :)
Don't forget X-windows and mozila for example.
While a fast kernal is important, user programs
waiting on a mouse click are what sells new
computers.


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