#Rel. 3 Crash on Exit
24-Oct-93 12:19:17
Sb: #63024-#Rel. 3 Crash on Exit
Fm: James M. Murphy 71165,1321
To: Yost Group 76702,413
Gary, PMJI, This thread just reminded me that I wanted to share this
information with yourself and the forum. I received a BrandNew
486DX2-66MHz, 256k cached desktop unit for our new Training facility
that happend to have a Bus Logic IDE/FDD Combo Controller. The
Controller was a Model BT-455S Fast SCSI Addapter for VL-Bus Systems.
Here is the important part…..The BIOS CHIPS on the Controller where
4.50 and 3.31 respectivly. And we were running DOS 6.0 with QEMM
7.01. We were having all kinds of trouble running Quarterdeck…
blowups.. crashes etc.
After a couple of calls to Both Buslogic and Quarterdeck we
determined that the BIOS CHIPS needed to be upgraded: (Remember This
is a BRAND NEW Unit.)
The reason…..See page 146 in your 7.0
(BTW if you have 7.0 You MUST upgrade to 7.01 for DOS 6.0 ETC.)
or 7.01 Quarterdeck expanded memeory manager Manual. Breifly…"VDS
(Virtual DMA Services) makes it possible for bus-mastering devices to
coexist with 386 memeory managers like QEMM."
Soooooo if the Controller is a Bus-Mastering "type" the BIOS CHIPS
_Must_ Support VDS. Oh Ya' Bus Logic did send us the Newer chips at
no charge…..we plugged them in and it worked just fine. <g> For
what its worth Department. Murph'