ed@maxed.amg.com (Ed Whittemore) (02/23/91)
In article <12763@hydra.gatech.EDU> ken@dali.gatech.edu (Ken Seefried iii) writes: >-- > >I'm having a bit of trouble with a machine that I am trying to bring >SCO-ODT up on, I I thought someone else might have plowed through >this. > >The details: > > Zenth 16-MHz 80386 machine (no FP, no cache) Model 300 (I think) > 2 4-MB, 32-bit memory cards > DTC1010 ST-506 HD/FD controller + 1.2MB floppy > Adaptec AHA-1540 SCSI controller + CDC 94171-344 Hard drive > >The problem: > > I want the SCSI drive to be the root (only) drive. There is > no hard drive attached to the DTC1010. When I power on the > machine, I get the Adaptec SCSI BIOS banner, at witch point it > goes looking for devices. It seems to find the CDC just fine. > I then proceed to load boot disks N1 and N2. The initial SCO > banner correctly shows all devices (including "adapter") and > proper memory size, etc. However, when I attempt to > initialize the disk, the machine hangs, usually, but not ... The Zenith 16 MHZ machines do not support bus master DMA on the part of the Host Adaptor--the Adaptec card WILL NOT WORK. You can test this yourself by running the DMA test at DC00:9 or whatever you have the bios address set to. -- Ed Whittemore uunet!maxed!ed ed@maxed.amg.com American Micro Group, Inc. 201-944-3293