[comp.binaries.ibm.pc.d] IBM AT DMA CHIP HELP NEEDED!!!

gcw20877@uxa.cso.uiuc.edu (George Wang) (01/09/90)

Several months ago we purchased an IBM AT compatible computer
from the CVN Television Network.. It's a MOTOROLA Brand AT Computer...

There seems to be a problem with the system's DMA Chip.. Any backup
program that uses direct DMA access for high speed backups (such
as Fastback and PCtools PCBackup) creates unreliable backups...

I can only get the LOW DMA speed to pass for Fastback Plus and even
then the backups have sector errors when read back using the
compare files feature...

I heard that AMD's DMA chip had a problem with it... Does
anyone know HOW TO SPOT and REPLACE a bad DMA chip?? I looked at
the motherboard but have no clue as to what the DMA Chip looks like..
Also what would be a good replacement DMA Chip??

I would really like to get Fastback Plus working.. Please email
as I don't keep up with this newsgroup... Thanks!

George

--
George Wang
University of Illinois
gcw20877@uxa.cso.uiuc.edu