Article View: comp.lang.postscript
Article #8345Re: "copy" to Amiga serial port
From: Richard Sexton
Date: Wed, 03 May 1989 05:00
Date: Wed, 03 May 1989 05:00
37 lines
2025 bytes
2025 bytes
In article <107@snll-arpagw.UUCP> paolucci@snll-arpagw.UUCP (Sam Paolucci) writes:
>In article <798@adobe.UUCP> greid@adobe.COM (Glenn Reid) writes:
>->In article <100@snll-arpagw.UUCP> paolucci@snll-arpagw.UUCP (Sam Paolucci) writes:
>
>->A PostScript printer is a computer, not a file. Here
>->are three reasons why a simple utility program should be used (if you only
>->had one, sigh), rather than "copy":
>->
>-> 1. Flow control. Unless you configure your printer for DTR/DSR
>-> flow control, or unless you handle XON/XOFF yourself, there will
>-> be a practical limit to the size of files you can print without
>-> overflowing the communications buffer.
>
>This is handled automatically by the serial device.
AHA!
The way I hack postscript is to use vi, write what I want, and
copy it to the printer. If it doesnt work, and I can't tell why
by just looking at the cose, I'd fire up a terminal emulator
and see what the printer sent back (no, I didn't know
about ehandler.ps)
Well this works fine with small files, but when the file
got above a certain size, about 150K, a working PS program
would not work if I sent it to the printer with a terminal
emulator.
I *suspect* now, that the comm program was bypassing the
serial.device, and not doing any handshaking. The comm
program was, I believe, handshake (ho ho ho), and this
is *just a guess*.
--
``The way to heaven is through weasel lore!'' - Ted Kaldis
richard@gryphon.COM decwrl!gryphon!richard gryphon!richard@elroy.jpl.NASA.GOV
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!purdue!decwrl!ucbvax!pasteur!ames!elroy!gryphon!richard From: richard@gryphon.COM (Richard Sexton) Newsgroups: comp.lang.postscript,comp.sys.amiga.tech Subject: Re: "copy" to Amiga serial port Message-ID: <15403@gryphon.COM> Date: 3 May 89 05:00:38 GMT Reply-To: richard@gryphon.COM (Richard Sexton) Followup-To: whichever group is appropriate Organization: Trailing Edge Technology, Redondo Beach, CA Lines: 37