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- From: rice@cray.com (Jonathan Rice)
- Newsgroups: comp.sys.ibm.pc.misc
- Subject: Parallel I/O hangs unless Windows has run (help?)
- Summary: DOS hangs when printing; but ok if Win came first
- Keywords: DOS 5.0, Windows 3.1, OL-400
- Message-ID: <1992Nov11.110957.23724@hemlock.cray.com>
- Date: 11 Nov 92 17:09:57 GMT
- Organization: Cray Research, Inc.
- Lines: 32
- Nntp-Posting-Host: willow23
-
-
- When I use my Okidata OL-400 page printer under Windows 3.1, everything works
- fine. I can print from any Windows application -- Ventura, MS Write, you
- name it.
-
- If I shut down Windows, a quick mem/c lets me see that Windows does not leave
- any handy-dandy printer drivers hanging around. Nevertheless, if I now print
- from DOS -- copy abc.txt lpt1: -- everything still works just great (I do
- need to supply a trailing FF to get the last page out, but that's no
- trouble).
-
- *BUT* ... if I just boot DOS, without running Windows at all, I can't print
- beans. Any attempt to write to lpt1 hangs solid; interrupts are ignored.
- The "Data Present" message does not appear on the printer (it still shows "On
- Line") and the green LED doesn't blink. So there's nothing leaving the
- parallel port at all.
-
- The documentation mentions *no* required setup. The connectivity test
- Okidata recommends is to "turn on your computer and printer" and run a
- three-line BASIC program. Yes, I even stooped so low as to do that. Hangs
- in plain DOS. Works fine if Windows has been started and stopped. Works
- fine if Windows is running.
-
- What is Windows doing for me, and what traces does it leave behind after it
- has been terminated? If I knew that, I ought to be able to find some way to
- duplicate the effect in DOS. After three days of busy signals at Okidata's
- tech support, I finally got through to a fellow who had no idea whatsoever.
-
- Thanks in advance for any ideas you have to offer.
-
- --
- Jonathan C. Rice | rice@zizania.cray.com | ...uunet!cray!rice
-