Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!apple!motcsd!lance
From: lance@motcsd.csd.mot.com (lance.norskog)
Newsgroups: comp.os.mach
Subject: Re: SCSI Driver for MACH ?
Message-ID: <4307@motcsd.csd.mot.com>
Date: 21 Jun 91 19:24:19 GMT
References: <1991Jun15.154753.15158@tandem.com>
Organization: Motorola CSD, Cupertino CA
Lines: 20

stu@tandem.com (Stuart G. Phillips) writes:

>Does anyone have a SCSI driver for MACH targetted at any of the PC-AT or
>clone cards ?

>I'm looking for the source of one to build into a MACH kernel before sitting
>down and writing one myself !

I would recommend first writing a SCSI MIG protocol, so that you can write
generic SCSI-MIG disk, tape, CDROM, scanner, etc. drivers which then talk
SCSI-MIG commands to your SCSI driver.  Every UNIX I've seen that
supports SCSI has a multiplexor like this, but the mux is ad hoc and 
difficult to re-use for funky devices like scanners.  

Or networks: SCSI is several times faster than Ethernet, 
and makes a a great IP transport for a few computers close together.

Mach 3.0 needs an official SCSI MIG protocol.

Lance