contemplating selling my Canon Cat

[Tony Duell]

> 
> 
> 
> Hi Chris
> 
>  All of the I/O, Floppy, video, modem and such, are through custom
> Canon chips. I'm told that they emulate standard chips because
> they originally built the prototypes with standard off the shelf parts.

Ouch!. Before I read that, the Cat was high uop on my (mental) list of 
desirable machines. Now it's at the bottom :-(. 

How much is known about these ICs? Software interface (registers, etc)? 
Pinouts?

-tony