Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!unmvax!ncar!ames!amdcad!sun!pitstop!sundc!seismo!uunet!portal!cup.portal.com!A-N-Onymouse
From: A-N-Onymouse@cup.portal.com (John - DeBert)
Newsgroups: sci.electronics
Subject: Re: Re:Mystery chips on S-100 processor board
Message-ID: <14098@cup.portal.com>
Date: 30 Jan 89 06:40:21 GMT
References: <5770015@hpscdc.HP.COM> <2312@iscuva.ISCS.COM> <617@csd4.milw.wisc.edu>
Organization: The Portal System (TM)
Lines: 20

In article (617@csd4.milw.wisc.edu), paravia@csd4.milw.wisc.edu
 (Mark David Kakatsch) writes,

>Hello. At a recent SwapFest here in the milwaukee area, I picked up a (more or
>less) full s-100 system for approx. $65. The CPU board is an "Ithaca Audio" 
>Z-80 board, and it won't be too hard to fix up...However, my problem is a few
>chips on the board. From the schematics, you can tell that they are buffer 
>chips such as the 74LS245, or '374, albeit they have only 16 pins. Their part 
>numbers are 8T97 and 8T98. Does anybody know if they are still produced, and if
>so, where they are available? Thanks much...
>
>Mark

The 8T97 and 8T98 are buffer devices for bus i/o. They are still being made
and can be had from various electronics parts suppliers such as Jameco or
JDR Microdevices. Offhand, I don't recall which does what exactly. I believe
that they are tristate devices. 

JJD
 A-N-Onymouse@cup.portal.com