Subject: Re: 240/260 CPU hacking....
To: None <port-pmax@netbsd.org>
From: Aaron J. Grier <agrier@poofygoof.com>
List: port-pmax
Date: 03/21/2001 15:40:47
On Wed, Mar 21, 2001 at 11:06:22AM +1100, Simon Burge wrote:
> Emphasis on _little_ here. DEC and everyone else seem to have
> different ideas about CPU speeds for the R4x00. These CPUs are
> internally clock-doubled - what DEC calls a 60MHz part everyone else
> would seem to call a 120MHz part. So a 133MHz CPU would be a 5000/266
> (or something!).
? so 5000/200 is 25MHz bus, clock-doubled to 50MHz in CPU, and 5000/240
is 40MHz bus, clock-doubled to 80MHz in CPU?
--
Aaron J. Grier | "Not your ordinary poofy goof." | agrier@poofygoof.com