[comp.sys.ibm.pc.hardware] Floppy controller's

kevinc@cs.athabascau.ca (Kevin Crocker) (06/12/91)

Hi all, I've run into a bit of a problem with my floppy drives. Some
background:

I'm using an Exceltronix BEST 386-33/0 with 8Mb motherboard RAM and a
Future Domain SCSI hd controller.  I haven't been able to find the
floppy controller so I have assumed that it is built into the Future
Domain hd controller.

I have been getting reproducable read failure on both A: (1.2 Mb 5
1/2") and B: (1.44 Mb 3 1/2 ") drives.

This always happens when I use QEMM386.  I've tired Excluding every
possible high memory address that I can to no avail.

Is there some way that I can track down where the floppy bios is hidden
to see what section of memory is accessed when a floppy read is
initiated.

E-mail is preferable so as not to clog the net with a trivial bit of
info.

Kevin
-- 
Kevin "autark" Crocker (Athabasca University)
kevinc@cs.AthabascaU.CA  -or-  risk@cs.AthabascaU.CA

kevinc@cs.athabascau.ca (Kevin Crocker) (06/14/91)

In an earlier message I asked about how to get my floppy readable after
installing QEMM.  Here's what worked:

DO NOT put the ROM statement in the QEMM386 command line.
DO put in DISKBUF=10 and DMA=64.

The problem was that SCSI drives tend not to have enough disk buffering
available when regular DOS is loaded and QEMM just highlighted the
problem.  GOTCHA'  --- the DISKBUF statement uses 10K of lower ram.

thanks for all the help.  I received many messages and thank everyone
for their help.

Kevin
-- 
Kevin "autark" Crocker (Athabasca University)
kevinc@cs.AthabascaU.CA  -or-  risk@cs.AthabascaU.CA