Date   : Sun, 12 Mar 2006 01:27:45 -0000
From   : "David Hunt" <dm.hunt@...>
Subject: Re: 1MHZ SCSI/ATA board.

> > force up to 6MHz with a heatsink... Didn't the 8085 suffer from the same
> > problems as the Z80 regarding cycles per instruction, I vaguely remember
> the
> 
> You mean the "problem" that *all* CPUs have, that the system clock
> must cycle a certain number of times to perform any actions?
> 
> > NOP being 4 cycles vs. 2 cycles on the 6502. So even doing nothing it's
> half
> > the performance.
> 
> Two cycles at 2MHz, four cycles at 4MHz. Who's counting?

The NOP is the shortest instruction in both CPUs, IIRC the 8085 has some 22
cycle instructions too. I can't see why a 6502 at the same clock speed
wouldn't whip the hell out an 8085.

Dave ;)