7 Jun
1999
7 Jun
'99
2:40 p.m.
The 7109 is an adc, of the dual-slope integrating variety more or less like
the panel meter IC's Intersil developed and everyone else copied. I think
www.maxim-ic.com is the place to look for the functions on this board. I'll
let you guess what the DAC800 is. (chuckle) If it's working, it's probably
a keeper. Look for any additional identifiers and then hit the web with a
search for that.
Dick
-----Original Message-----
From: Joe <rigdonj(a)intellistar.net>
To: Discussion re-collecting of classic computers
<classiccmp(a)u.washington.edu>
Date: Monday, June 07, 1999 8:38 PM
Subject: ID this PC card
Hi,
I picked up an old IBM AT the other day and found a strange card in it.
It's a full length card with an 8 bit ISA plug. It has two Burr Brown
DAC800P-CBI-V ( D to A?) ICs on it along with a large IC marked TSC
7109CPL. (I have no idea what that one is.) There is also a small flat
sealed Yuasa NiCad battery in the top corner of the card. It has 37 pin
male connector on the back and it's marked "copyright 1983 MBC". Most of
the ICs are dated 1986. It looks like it may be some kind of D to A
convertor card. Does anyone know what it is for sure?
Joe