IBM RT Mouse Was: IBM RT-PC available

Chuck Guzis cclist at
Tue Dec 15 13:56:01 CST 2009

On 15 Dec 2009 at 17:34, Alexandre Souza - Listas wrote:

> > The IBM RT mouse I have (Part No. OOF2383) is definitly a protocol
> > mouse, as it has a HD63A01XOF processor for two encoders and two
> > buttons ( I can
> > check out the wiring and protocol (if not propietary) later.
>     Interesting how BIG is the processor used! :oO I'm amazed!

For the time period, perhaps not so big.  It's basically a 6800 with 
embedded peripherals (timer, UART, etc.)  Not much different from 
today's low-end uC (PIC, 8051, AVR, etc.)  I suspect that a fair 
number of those pins are NC in this application.

If you want big, consider the same uC in its DIP incarnation--a 64 
pin (0.050 spacing) DIP.  I've got one somewhere.


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