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From: rb@cci632.UUCP (Rex Ballard)
Newsgroups: net.micro.atari16
Subject: Re: IBM 327x emulators
Message-ID: <242@cci632.UUCP>
Date: Mon, 21-Jul-86 08:23:18 EDT
Article-I.D.: cci632.242
Posted: Mon Jul 21 08:23:18 1986
Date-Received: Wed, 23-Jul-86 07:13:48 EDT
References: <261@vaxb.calgary.UUCP> <9@eneevax.UUCP>
Reply-To: rb@ccird1.UUCP (Rex Ballard)
Organization: CCI, Rochester Development, Rochester, NY
Lines: 37
Summary: Some hints.

In article <9@eneevax.UUCP> hsu@eneevax.UUCP (Dave Hsu) writes:
>In article <261@vaxb.calgary.UUCP> brinsmead@calgary.UUCP (Mark Brinsmead) writes:
>>
>>    A friend has asked me to locate an emulator for an IBM 327x
>>terminal that will run on his (1040) ST. Can anyone provide a pointer
>>to such a beast -- I'm sure they exist, but I've never seen one.
>>
>>                                  Mark Brinsmead
>
>I'm not so sure that such a beast exists.  The 3270 series terminals
>are best described as workstations, not terminals in the ordinary sense.
>Like CDC `terminals', only more picky.  3270's don't talk serial at all;
>they have a ridiculous protocol that involves transferring entire screen
>pages, and buffered input areas.
>
>There is no such thing as a 3270 emulator.  What you need is either
>a normal terminal emulator run through a front end (like a Series/One
>running the Yale package) or one of those elusive Applelink SNA
>adapters that purportedly came out for the Macintosh, and something to make
>your ST talk Applelink.
>
>-dave

This little "oops" just had to get some sort of reply.  There are 3270
emulator packages available for the IBM-PC, two or three of which are
written in "C" and possibly even port-able to the ST.  In addition to
the software, a very high speed serial interface, probably through the
DMA port will also be needed.  Specifically, the serial chip should
support SDLC and/or HDLC protocol.  There are several likely candidates
including Intel, NEC, and Motorola parts.  Again, the old "1 address line"
limitation of the DMA port is likely to create a bit of inconvenience.
I suppose you could call some of the makers of IBM-PC SNA adapters to see
if they have done an ST port yet.  It is quite likely that at least one
of them either has already done it, or will be doing it soon.

There may also be some SCSI->SNA adapters coming in the near future, so
watch for them as well.