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- From: mfaurot@bogart.uucp (Michael Faurot)
- Newsgroups: comp.os.coherent
- Subject: Coherent v4 SCSI and ST-506
- Summary: Questions about Coherent when used with a SCSI host adpater
- Message-ID: <1992Dec21.174313.22142@bogart.uucp>
- Date: 21 Dec 92 17:43:13 GMT
- Organization: ism:c:m/xo
- Lines: 44
-
- A few questions here concerning SCSI and Coherent. I'm currently
- running v4 with an ST-506 (RLL) controller and I installed Coherent with
- only this support. I'm thinking about getting a SCSI host adapter
- sometime within the future, probably an Adaptec 1542b.
-
- 1) I recall when doing the install, that the installation program
- prompts whether you wish to use an AT style controller
- (ST-506, ESDI and IDE), a SCSI or both. Is anyone running
- Coherent with both an ST-506 controller and a SCSI controller?
- If yes, what type SCSI controller (vendor and model #). Which
- controller does the system boot from? Which controller is
- controlling your floppy drives?
-
- 2) Assuming that it is possible to use both an ST-506
- controller and a SCSI controller in the same machine with
- Coherent concurrently, which SCSI controller is best to use if
- you are not able to alter the ST-506's configuration (ie.,
- you're not able to disable the floppy support and/or must boot
- from the ST-506)?
-
- 3) I currently need to run Coherent with alternative polling
- so that it properly accesses my ST-506 controller. What, if
- any, impact will this have on the SCSI end of things if both
- SCSI and ST-506 can exist together?
-
- 4) How does one go about adding in SCSI support after the system
- is already installed? Obviously the various device files
- need to be created, the kernel probably needs to be updated
- etc. I know I could get this done by re-installing, but that
- is an unacceptable solution (IMO).
-
- 5) Any comments or tips on using Adaptec SCSI controllers with
- Coherent either in conjunction with another type controller or
- used alone? Any recommended IRQ, DMA, jumper settings etc.?
- Any particular model number that's best suited for use with
- Coherent over another, or one to particularly avoid? Any
- versions of the firmware on board to look for over another?
-
- --
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