If it's the SIO-(A or B) then it's one com2502 or any of the related uarts.
If its the 2-SIO then a pair of 6850s (better board too).
Allison
-----Original Message-----
From: Cini, Richard <RCini(a)congressfinancial.com>
To: 'ClassCompList' <classiccmp(a)classiccmp.org>
Date: Friday, December 14, 2001 11:09 AM
Subject: MITS 2SIO serial chip?
Does anyone know what chip was used for the MITS serial
boards? I thought
that it was the 6850, but I could be wrong.
Rich