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From: carrkevi@student.msu.edu (Kevin M. Carr)
Newsgroups: comp.sys.apple2
Subject: Re: AE Serial Pro
Date: Mon, 22 Aug 1994 01:57:55 -0600
Organization: Michigan State University, Dept. of Biochemistry
Lines: 58
Message-ID: <carrkevi-2208940157550001@kagunij.bch.msu.edu>
References: <1994Aug20.124829.20517@pro-algonquin.mn.org>
NNTP-Posting-Host: kagunij.bch.msu.edu

In article <1994Aug20.124829.20517@pro-algonquin.mn.org>,
craigl@pro-algonquin.mn.org (Craig Larson) wrote:

> Could someone who has an Applied Engineering Serial Pro card please send me
> a list of the dip switch settings for the 2 banks of switches?  Thanks in
> advance!
> ----


I use an AE Serial Pro in my  //e to connect to my ImageWriter II.  All of
the DIP switches are set to OPEN (switch down).  The switch block next to
the printer interface connector is for hardware handshaking signals.
(Copied without any permission whatsoever from the AE Serial Pro User's
Manual.)

      o Switch 1, when closed, select pin 4 (Request to send) as the flow
        control handshaking line.  Some printers which use this line are:
        Data General TP2; Heath H-25; Olympia ESW102/103; QUME Sprint 5;
        and Smith-Corona TP1

      o Switch 2, when closed, selects pin 11 which is, according to RS-232-C
        specifications, undefined and is used by some serial printers as a
        printer-ready signal.  Some Centronics, Texas Instruments, and Epson
        serial printers may use this pin.

      o Switch 3, when closed, selects pin 19 (Secondary Request to Send) as
        the handshaking line.  Some of the printers that use this pin are the
        Anadex DP8000/9000, Bell TP-1000, Lear Seigler 310, NEC 3500/7700,
        and Digital Equipment (DEC) LA-series serial printers.

      o Switch 4, when closed, selects pin 20 (Data Terminal Ready) as not
        only the device-available handshaking line but also as the data-flow-
        control line.  Some Diablo, C.Itoh, Okidata, QUME, Tectronics, or
        Xerox printers may use this handshaking signal.

      o When all of the switches are open, Data Terminal Ready (DB-25 pin
        20) is the only line monitored as the hardware handshaking line
        from your printer.  This supports most popular serial printers.


The second set of DIP swithces (close to the front of the card) is for
generating Maskable (IRQ) and Non Maskable (NMI) interrupts from the 6551
Asynchronous Communications Interface Adaptor (ACIA) chip and the 6818
clock chip.  The swithces select the type and source of interrupt
request.  Normally all switches are in the OPEN position.

      o Switch 1: IRQ from 6551

      o Switch 2: NMI from 6551

      o Switch 3: IRQ from 6818

      o Switch 4: NMI from 6818

Hope this information helps.

Kevin M. Carr
carrkevi@student.msu.edu