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From: atn@cory.Berkeley.EDU (Alan Nishioka)
Newsgroups: sci.electronics
Subject: Re: Serial -> Parallel
Message-ID: <29038@pasteur.Berkeley.EDU>
Date: 22 Oct 90 18:30:06 GMT
References: <3899@osc.COM> <1920003@hp-ptp.HP.COM> <51529@unix.cis.pitt.edu>
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Reply-To: atn@cory.Berkeley.EDU (Alan Nishioka)
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In article <51529@unix.cis.pitt.edu> fmgst@unix.cis.pitt.edu (Filip Gieszczykiewicz) writes:
>	I need to convert a terminal's serial printer port for a
>	parallel printer - ASAP. The terminal has a RS232 and
>	the printer (Infoscribe 1000) has a centronics.

Use a UART (Universal Asynchronous Receiver Transmitter) such as the
General Instrument AY-5-1013A, $2.95 at Jameco.  A UART converts the
RS232 serial signal to parallel.  You might also need an LM1489 Line
receiver to protect the UART input against +-12 voltages.
This UART has the advantage of being easier to connect without a
microprocessor since the control lines come out on its 40 pins.
Actually, I haven't used this chip...  I seem to have bought one
without getting a pinout.

I don't know what handshaking signals Centronics requires.

Does anyone have a pinout for an AY-5-1013A UART?  I don't have a GI
databook nor can I find a second source, and IC Master (for four years)
has it listed, but doesn't have an advertisement.
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Alan Nishioka      KC6KHV      atn@cory.berkeley.edu      ...!ucbvax!cory!atn