Received: from PACIFIC-CARRIER-ANNEX.MIT.EDU by po7.MIT.EDU (5.61/4.7) id AA19266; Sat, 24 Feb 96 21:09:43 EST Received: from pain.lcs.mit.edu by MIT.EDU with SMTP id AA00804; Sat, 24 Feb 96 21:09:19 EST Received: (from daemon@localhost) by pain.lcs.mit.edu (8.6.12/8.6.12) id UAA13473; Sat, 24 Feb 1996 20:00:37 -0500 Received: from rocinante.digex.net by pain.lcs.mit.edu (8.6.12/8.6.12) with ESMTP id TAA13420 for ; Sat, 24 Feb 1996 19:50:13 -0500 Received: (from mcguire@localhost) by rocinante.digex.net (8.6.12/8.6.12) id TAA06004; Sat, 24 Feb 1996 19:50:08 -0500 Date: Sat, 24 Feb 1996 19:50:08 -0500 Message-Id: <199602250050.TAA06004@rocinante.digex.net> From: Dave McGuire To: David Gilbert Cc: NetBSD/sparc Subject: Re: VME Ethernet with NetBSD/sparc 1.1 In-Reply-To: Re: VME Ethernet with NetBSD/sparc 1.1 (David Gilbert) References: <199602240426.UAA24117@salsa.gv.ssi1.com> <199602242137.QAA25506@repeat.pci.on.ca> Sender: owner-port-sparc@NetBSD.ORG Precedence: list X-Loop: port-sparc@NetBSD.ORG On February 24, you wrote: > Would his Sun4/110 CPU be able to DMA if it were put in a 12 > slot 3/260 chassy? I suppose a polled IO ethernet would stink. No...the limitation is in the VME implementation on the 4/100 cpu board. The Sun 3-slot chassis is pretty ordinary; I've run all sorts of stuff in them...mostly stuff that Sun swears can't possibly work...for example, there's a 4/400+32mb board+scsi in a 4/110 chassis running happily about three feet from me...no ill effects on it's I/O. With Sun VME gear, the general rule is...pretty much anything will work in pretty much any chassis, with the exception of the old Sun2/160 VME backplane which only bussed P2 for like two or three slots. -Dave McGuire Systems Engineer Digital Express Group, Incorporated mcguire@digex.net