Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!nic.MR.NET!xanth!mcnc!ecsvax!dukeac!sgt
From: sgt@dukeac.UUCP (Stephen G. Tell)
Newsgroups: sci.electronics
Subject: Re: Mystery chips on S-100 processor board
Keywords: s-100 8T97 8T98
Message-ID: <1206@dukeac.UUCP>
Date: 29 Jan 89 05:47:26 GMT
References: <5770015@hpscdc.HP.COM> <2312@iscuva.ISCS.COM> <617@csd4.milw.wisc.edu>
Reply-To: sgt@dukeac.UUCP (Stephen G. Tell)
Organization: Academic Computing, Duke University, Durham, NC
Lines: 23

About 5 years ago I built an S-100 system starting with a bare Ithaca Audio
front panel board that I bought at a flea market.  I found that Ithaca
was still in business in some form or other, and was able to get a complete
manual for the thing after signing a non-disclosure agreement.  If you
can't find them, let me know and I'll try to dig up the address, which may
take a while since the docs are home in NJ and I'm at school here in NC.

As for the chips, posssibly they are 8000 series TTL? (81LS97, 81LS98) or
somthing?
some of the mail-order companies still carry these; Jameco used to.
Looking at their catalog and my 1981 Natioal Semiconductor databook; they
both list an 81LS95 through '98, but they're 20-pin
devices.  My Ithaca board used some chips in this series; they turned
out to be very like 74LS244's with different pinouts.  I got them someplace;
probably Jameco but I don't remember.
My National databook lists a whole slew of TTL stuff with 8000 series numbers.

Your best bet for definitive info on what the chips are is a good collection of
databooks.  There are lots of chips our there that we've never heard of.
-- 
Steve Tell:  senior, Duke University school of Engineering (please hire me).
Former Chief Engineer, Cable 13 / Duke Union Community Television.
sgt@dukeac.ac.duke.edu;     !mcnc!ecsgate!dukeac!sgt