From: mrj@cs.su.oz.au (Mark James)
Subject: Re: IDE vs SCSI (Why VLB busmastering slows your system)
Organization: Basser Dept of Computer Science, University of Sydney, Australia
Lines: 12

In article <1993Apr16.205724.26258@mnemosyne.cs.du.edu> smace@nyx.cs.du.edu (Scott Mace) writes:
>
>Have you ever seen what happens when you hook a busmaster controller to
>a vesa local bus.  It actually  slows down your system.....
>
>If you don't belive what I said about busmastering and vlbus then pick
>up a back issue of PC-week in whihc they tested vlbus, eisa and isa
>busmastering cards.

Is VLB busmastering bad because it stops the processor fetching from
external cache as well as main memory while the VLB card has the bus?
How significant is the slowing effect?