kory@avatar.com (Kory Hamzeh) (06/03/91)
I recently purchased the Mylex MAE486 33 Mhz EISA motherboard. I have
16MB of memory using 4 4MBx9 NEC 70ns SIMMs. The hard disk controller
is the Adaptec ACB2322B. The tape controller is the Archive 499R and
I have a Orchid Prodesigner II VGA card.
The problem that I seem to be having is that when I write to my floppy
drive or tape drive, I get either fatal parity error or the system
hangs. This happens both under dos and sco unix. I can, however, read
from the floppy and tape drive. I can read and write to the hard disk
without any problems.
I have tried all different combinations of speed and cache.
Mylex has not been very helpful. In the past, they have been very helpful
in solving problems that I have had with their other boards.
Any help or pointers would be greatly appreciated.
Thanks,
kory
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Kory Hamzeh UUCP: avatar!kory or ..!uunet!avatar!kory
INTERNET: kory@avatar.com bill@camco.Celestial.COM (Bill Campbell) (06/03/91)
In <1991Jun02.201725.355@avatar.com> kory@avatar.com (Kory Hamzeh) writes:
:I recently purchased the Mylex MAE486 33 Mhz EISA motherboard. I have
:16MB of memory using 4 4MBx9 NEC 70ns SIMMs. The hard disk controller
:is the Adaptec ACB2322B. The tape controller is the Archive 499R and
:I have a Orchid Prodesigner II VGA card.
:The problem that I seem to be having is that when I write to my floppy
:drive or tape drive, I get either fatal parity error or the system
:hangs. This happens both under dos and sco unix. I can, however, read
:from the floppy and tape drive. I can read and write to the hard disk
:without any problems.
I had a similar problem about a year ago with a 386-33 system
where I wasn't able to write to floppies reliably. It turned out
that the problem was related to the 16-bit vga board (Paradise).
I moved the 16-bit Paradise card to an 8-bit slot and the problem
went away.
I was told (I can dig up the reference if necessary) that there
were problems using 16-bit VGA on UNIX or other OSs that use the
protected modes on the 386 (and I assume also the 486). I've seen
other references to problems with 16-bit VGA under Xenix/UNIX and
have avoided using them.
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INTERNET: bill@Celestial.COM Bill Campbell; Celestial Software
UUCP: ...!thebes!camco!bill 6641 East Mercer Way
uunet!camco!bill Mercer Island, WA 98040; (206) 947-5591