Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!eos!labrea!decwrl!ucbvax!NIHCU.BITNET!RAF
From: RAF@NIHCU.BITNET (Roger Fajman)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re:  Western Digital board
Message-ID: <8805142050.aa15574@Louie.UDEL.EDU>
Date: 15 May 88 00:50:07 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 7

> Note that even if you use DMA, it's not inherently "faster" than direct
> I/O when dealing with very fast (bus speed) transfers. Even though the
> CPU is theoretically able to do other things while the DMA operation
> runs, it will be slowed by heavy bus contention. And just as it's
> getting ready to do something else, it'll get the DMA completion
> interrupt.

Is this true of machines like the Compaq 386/20?