*BSD News Article 31831


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Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!yeshua.marcam.com!usc!rand.org!edhall
From: edhall@nntp.rand.org (Ed Hall)
Newsgroups: comp.unix.sys5.r3,comp.unix.pc-clone.32bit,comp.unix.sys5.r4,comp.unix.unixware,comp.os.linux.misc,comp.os.386bsd.misc,comp.periphs.scsi,comp.sys.ibm.pc.hardware.storage
Subject: Re: Anyone using a BusLogic 747S with multiple disk drives ?
Followup-To: comp.unix.sys5.r3,comp.unix.pc-clone.32bit,comp.unix.sys5.r4,comp.unix.unixware,comp.os.linux.misc,comp.os.386bsd.misc,comp.periphs.scsi,comp.sys.ibm.pc.hardware.storage
Date: 20 Jun 1994 03:54:55 GMT
Organization: RAND Corporation
Lines: 26
Message-ID: <2u33uf$lkb@rand.org>
References: <CrDswJ.7qE@cti-software.nl> <2tl4b0$3e0@rand.org> <2u132p$1t4@u.cc.utah.edu>
NNTP-Posting-Host: ives.rand.org
X-Newsreader: TIN [version 1.2 PL2]

Terry Lambert (terry@cs.weber.edu) wrote:
: In article <2tl4b0$3e0@rand.org> edhall@nntp.rand.org (Ed Hall) writes:
: ] : 	5) What kind of system/motherboard are you using
: ] 
: ]     Nice SuperEISA ver.1

: It is (or should be) well known that NiCE EISA motherboards do not
: support bus mastering DMAs in excess of 16M, just like ISA chip sets.

Uh, sorry to burst your bubble, but about the Nice SuperEISA ver.1:

  [you write:]
: . . . . (I'm partial
: to SiS for EISA, but that's just me -- and my very, very fast
: machine... Sis has the fastest Gate A20 I've ever seen, too).

Yup, the Nice SuperEISA ver.1 uses the SiS EISA chipset.

There are other NICE EISA MB's which use a HiNT chipset, and which not
only don't support bus mastering DMA above 16MB, but don't support
level-triggered interrupts.  Think of it as using a "Super ISA" chipset.
MCCI (NICE) isn't the only company which uses this chipset, and
as I've explained, it isn't the only chipset they use, either.

		-Ed Hall
		edhall@rand.org