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Path: sserve!newshost.anu.edu.au!munnari.oz.au!news.Hawaii.Edu!ames!elroy.jpl.nasa.gov!usc!cs.utexas.edu!uunet!math.fu-berlin.de!mailgzrz.TU-Berlin.DE!gmdtub!daemon From: daemon@bigfoot.first.gmd.de (daemon) Newsgroups: comp.os.386bsd.questions Subject: Re: SyDOS Problem, Solution. Message-ID: <3375@bigfoot.first.gmd.de> Date: 30 Apr 93 10:08:07 GMT References: <16BBEE049.C588212@mizzou1.missouri.edu> Organization: GMD-FIRST Lines: 27 In article <16BBEE049.C588212@mizzou1.missouri.edu> C588212@mizzou1.missouri.edu writes: >I posted sever months ago about support of the SyDOS 88meg removable HD's >SCSI controller (ST01B - 8bit). Well I got lots of mail asking me to report >my findings and it in...doesn't seem to have a chance. The ST01 can be >configured without IRQ usage or on IRQ 5 or 7. This means no IRQ 11 like >on the required SCSI in the docs. There is still two questions on my mind. >1) What is a DRQ, I'm not familiar with this abriviation. >2) If I got another SCSI controller of either 8 or 16 bit type and they could > be altered to use IRQ 11, DRQ 5, and the proper port address, would this > work? This would be much cheeper than the SCSI controller option presented > in the docs I've been reading (***BSD is not a poor or nonresourceful man's > undertaking). No it doesn't help, if you can put the controller to the right IRQ and DRQ, there is a lot more involved in that. All controllers use different commands to do the work, so you need to write an extra driver for every controller, you want to use. I think, the abbreviation of DRQ is the DMA channel request used, but i am not sure. You can only use the Adaptec 1542B/1540B , 1542C ( can not be used to install 386bsd-0.1 ), 1542A (don't know if you can use it to install ), or the 1742A (not tested from me :-) in the 1542 emulation mode. You should be able, to use later a Bustek 742A or an Ultrastor 14f SCSI controller. No support yet for the Seagate ST01/ST02 or the Adaptec 1522.