[Coco] 6821 and 6551 compatible parts @ 14Mhz Bus Speed

Willard Goosey goosey at virgo.sdc.org
Mon Apr 30 03:21:47 EDT 2007



>Date: Sun, 29 Apr 2007 11:12:57 -0500

>From: Joel Ewy <jcewy at swbell.net>

>

>coco at yourdvd.net wrote:



>> replacement parts and their 6551 for upgrading my RS-232 Program Pak

>> and Modem Pak to 2-mhz operation. I was surprised to find that their

>> version of these parts are rated at 14Mhz, which makes since, as the

>> 65C816 is a 14Mhz part. Their prices are reasonable for brand-new

>>

>Looks as if they're even pin-compatible. Nice! Even makes me wonder

>what I could do with some of the spare 68000 chips I have lying around...


That has to be on an asynchronous bus... I mean, no way did the IIGS
come with 35 ns memory.

Willard
--
Willard Goosey goosey at sdc.org
Socorro, New Mexico, USA
"I've never been to Contempt! Isn't that somewhere in New Mexico?"
--- Yacko



More information about the Coco mailing list