Parallel Ports Quit
04-Jul-94 14:25:06
Sb: #41673-Parallel Ports Quit
Fm: Jim Butterfield 73624,14
To: Keith Shook 72637,3170
Keith:
Someone else with your hardware configuration might be able to respond more
specifically (and I hope they do so), but here are a few ideas:
1. Hardware. From the symptoms you describe, the hardware seems to be working
at least partially ("sends the wrong characters"). About the only possibility
I could see here is one of the parallel lines being "stuck at zero" or "stuck
at 1". These wrong characters: do they relate in any way to what you're
sending? Are they reproducible; same output every time? Many printers have a
diagnostic mode, where they report every character they received as a hex
number. Worth a look.
2. Preferences. Double check; make sure you haven't somehow bumped to the
wrong printer driver.
3. Printer driver: could this program have somehow been corrupted? Try
comparing it to a backup copy, or replacing it.
4. If specific tests turn up nothing, it might be time to look for system
troubles that are manifesting themselves first in this area. Sure your power
supply is coping happily now you have the new CDROM interface installed?
Perhaps you might try memory diagnostics to see if there's any sign of RAM
failure. Not sure if 68030 caching might have anything to do with it, but you
could try playing with it.
"Linefeeds and Carriage Returns are missing" does make me first suspect the
hardware area. Might be a bad connector or a bad connection; since you've
tried swapping the 8520's, the problem does not seem to be there.
Hope you can spot it quickly; must be REALLY frustrating.
–Jim