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From: det@hawkmoon.MN.ORG (Derek E. Terveer)
Newsgroups: comp.unix.sysv386
Subject: Re: Simultaneous DMA
Message-ID: <1991Apr12.041213.19720@hawkmoon.MN.ORG>
Date: 12 Apr 91 04:12:13 GMT
Article-I.D.: hawkmoon.1991Apr12.041213.19720
References: <2247@pdxgate.UUCP> <1991Apr07.145531.22860@virtech.uucp>
Organization: Home System (One of the Eternal Champions); Eagan, MN, 55123-2507, USA
Lines: 18

cpcahil@virtech.uucp (Conor P. Cahill) writes:

>	1. can my motherboard do simultaneous DMAs 
>	2. can my motherboard do bus mastering DMA (the scsi card)

>The Fastback backup software for dos, as part of it's installation, tests
>the abilities of the DMA controller with respect to question 1.  I don't 
>know of any tests for question 2 other than install and see how it 
>works. (Be sure to have a backup before you start).

The adaptec AHA154[02][ab] card has a bus mastering test built into it, so one
can test the motherboard for bus mastering DMA *before* actually running
an application that requires it (and potentially circumventing the misery
involved in finding out after "some time" of running Unix).
-- 
Derek "Tigger" Terveer	det@hawkmoon.MN.ORG -- U of MN Women's Lax
I am the way and the truth and the light, I know all the answers; don't need
your advice.  -- "I am the way and the truth and the light" -- The Legendary Pink Dots