13 Mar
2008
13 Mar
'08
8:55 a.m.
From: dm561 at torfree.net
To: cctalk at classiccmp.org
Date: Thu, 13 Mar 2008 10:13:14 -0500
Subject: UARTs (was: Switch settings: Facit 4070 tape punch)
-------Original Message:
Date: Thu, 13 Mar 2008 04:35:01 -0400
From: "Roy J. Tellason"
Subject: Re: Switch settings: Facit 4070 tape punch
On Thursday 13 March 2008 05:25, Brent Hilpert wrote:
Hi
Pinout and data sheet for the StandardMicrosystems is on Al's bitsaver:
http://www.bitsavers.org/pdf/standardMicrosystems/_dataBooks/1985_StandardM…
Go to page 91 for com2017.
Dwight
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"Roy J. Tellason" wrote:
Ah yes. Vague recollections were nudging me in that direction... :-)
Anybody know who made those parts with numbers
like AY-n-nnnn? I don't
think I have much data on those offhand.
General Instrument. Often there's a "GI" logo on their chips. Dennis Boone wrote:
(Yes, the AY-5-1013 is a hardware/switch/pin-configured UART. Can supply
pinout if needed.)
That may be why I was recalling that number. The other one of those being
what, a 6402 or similar? I'm thinking Standard Microsystems, for which I
do have a databook someplace though I haven't seen it in ages.
----------Reply:
Yes, those AA-N-NNNN numbers are GI; they made 6 or 7 versions of that
UART, some dual-voltage PMOS and some 5V-only versions.
The 6402 (Intersil, Harris etc.) was a pin-compatible 5V CMOS version.
I've got a pretty complete set of GI datasheets, including their funky game
chips etc. if anyone needs any info.
m
>
AY-5-1013 40 pin dip (cpu?)
UART, I think. I know I've run into that number somewhere before.
If the 14411 is a baud rate generator, then this must be a uart,
especially as now that I look at the traces, the puzzling 8-pack
switches 1-5 go right to it.