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Article View: comp.lang.postscript
Article #8330

Re: DOS (Serial port) driver wanted

#8330
From: Gopal
Date: Tue, 02 May 1989 00:31
34 lines
2365 bytes
In article <739@rocksanne.UUCP> andresen@rocksanne.UUCP (Kevin Andresen) writes:

>We have a QMS PSJet+ hanging off the serial port of a PC.  We are looking 
>for a driver under DOS that:
>-- Supports XON/XOFF handshaking (else large PS files crash the printer) 
>-- Captures data sent back from the printer (e.g. error messages)
>-- Tacks on the infamous CTRL-D end-of-job indicator
>Does such a beast exist?  Any and all pointers and suggestions are welcome.
>Kevin Andresen [andresen.wbst@xerox.com, ...!rochester!rocksanne!andresen] 

I have the very thing (for MS-DOS) except that it is not a driver but a
program (called "comsend", I wrote it), so you need to save your output into a
file and feed it to the program.  The problem with trying to do it as a driver
is that most programs talk to the serial port hardware directly.  Also, the
driver will not know when to send a ^D etc.  Most programs that support
postscript, in my experience, will allow you to capture it into a file.

This program can be configured to send a text string before file transmission
(ex. if you want to send a "%!<cr>")  and send a text string after file
transmission (ex. the infamous control-D).  It also saves any returned
messages in a buffer which you can display at the end of file transmission.
It can handle multiple files, and will set the DOS errorlevel so you can
test for success in a batch file etc.).  The program supports xon/xoff
flow control.

Mucho hours were spent writing it;  if you need it I'll be glad to send it
to you.  If there is more than 10 people interested, I'll post.  If you have
access to simtel, you will probably find it there.

Venu P. Gopal
UUCP:	att!ihuxy!vg55611
Internet: vg55611@ihuxy.att.com
BITNET: com%"vg55611@ihuxy.att.com"   or   com%"vg55611%ihuxy@research.att.com"
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Message-ID: <2965@ihuxy.ATT.COM>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!pacbell!att!ihuxy!vg55611
References: <739@rocksanne.UUCP>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!pacbell!att!ihuxy!vg55611
From: vg55611@ihuxy.ATT.COM (Gopal)
Newsgroups: comp.lang.postscript
Subject: Re: DOS (Serial port) driver wanted
Keywords: MS-DOS, driver, xon/xoff, ^D
Message-ID: <2965@ihuxy.ATT.COM>
Date: 2 May 89 00:31:24 GMT
References: <739@rocksanne.UUCP>
Reply-To: vg55611@ihuxy.UUCP (Gopal,V.P.)
Organization: AT&T Bell Laboratories - Naperville, Illinois
Lines: 34