[Coco] RE: [Color Computer] mystery chip on COCO2 XC80652P

[Mike Pepe]

Steve,
 
It's a slightly reworked 6821 that better matches the electrical
characteristics of the keyboard interface.
 
They used to use 6822 chips for that same reason back in the CoCo 1 days
 
If you blow up the XC80652P a 6821 or 6822 is a drop-in replacement. (well,
a desolder and drop-in, most likely!)


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From: sadolph [mailto:sadolph at magma.ca] 
Sent: Saturday, March 06, 2004 1:16 PM
To: Coco
Subject: [Color Computer] mystery chip on COCO2 XC80652P


All-
 
I have a coco2 wih 64K that is built on  a PCB with number 20261058.
 
There is a large 40 pin IC that I cannot identify-- it is labelled XC80652P.
 
Can anyone help identify this?
 
Thanks, Steve
 


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