Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!apple!portal!cup.portal.com!ts
From: ts@cup.portal.com (Tim W Smith)
Newsgroups: comp.periphs.scsi
Subject: Re: Summary:  favorite SCSI chip replies
Message-ID: <37876@cup.portal.com>
Date: 11 Jan 91 11:50:19 GMT
References: <1709@ksr.com>
Distribution: usa
Organization: The Portal System (TM)
Lines: 12

The cool thing about the 53C710 is not SCSI-2 but the increased
power of the scripts.  I've not tried this yet, but it seems to
me that one could make a script that would monitor an I/O queue
that contains something like Unix buf structures, find requests
for idle disk drives, figure out what SCSI command to do, do the
command, update status fields in the buf structure, place it
on a completion queue, and then interrupt the CPU.  The driver
interrupt routine would then only have to deal with telling the
kernel that I/O has completed.  Basically the disk driver would
only have an interrupt routine!

					Tim Smith