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 brand of 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
mdonahue@osiris.cso.uiuc.edu (01/10/90)
/* Written 12:56 am Jan 9, 1990 by gcw20877@uxa.cso.uiuc.edu in osiris.cso.uiuc.edu:comp.sys.ibm.pc */ /* ---------- "PROBLEM WITH AT's DMA CHIP!!!" ---------- */ 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 brand of 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 /* End of text from osiris.cso.uiuc.edu:comp.sys.ibm.pc */