*BSD News Article 2196


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From: adam@microware.com (Adam Goldberg)
Newsgroups: comp.unix.bsd,comp.os.linux,comp.periphs.scsi
Subject: Re: Query: Drivers for AHA >1522< ?
Message-ID: <adam.711725819@mcrware>
Date: 21 Jul 92 13:36:59 GMT
References: <2A6B89E3.7DE5@tct.com>
Organization: Microware Systems Corp., Des Moines, Iowa
Lines: 19

chip@tct.com (Chip Salzenberg) writes:

>And, just to make followups more likely, (3) what is the difference
>between the 1542 and the 1522?  Perspiring minds want to know!

The 1542 is a bus-mastering controller.  This 1522 is not.  That makes
the 1542 much faster (at least in a protected-mode OS like Linux, with
properly written drivers).  

Given this difference, my inclination is that modifying the 1542 driver
to work with the 1522 *could* be significant work.  (Or not, depending
on how far-sighted Adaptec is).


-- 
Adam G.
adamg@microware.com, or ...!uunet!mcrware!adamg
The above is not to be construed in any way as the official or unofficial
statements of Microware, or any of it's employees.