Date: Mon, 26 May 1997 18:33:27 +0200 From: Stefan Esser <se@FreeBSD.ORG> To: Matt Thomas <matt@3am-software.com> Cc: scsi@FreeBSD.ORG, hardware@FreeBSD.ORG Subject: NCR SCSI + 100TX Ethernet chip Message-ID: <19970526183327.13556@x14.mi.uni-koeln.de> In-Reply-To: <3.0.1.32.19970526113205.00715fc4@ranier.altavista-software.com>; from Matt Thomas on Mon, May 26, 1997 at 11:32:05AM -0400 References: <19970524124625.07596@keltia.freenix.fr> <Pine.BSF.3.95.970523204439.567A-100000@why> <19970524102943.GO37893@uriah.heep.sax.de> <19970524124625.07596@keltia.freenix.fr> <3.0.1.32.19970526113205.00715fc4@ranier.altavista-software.com>
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On May 26, Matt Thomas <matt@3am-software.com> wrote: > >876 dual 875 > 885 multifunction 875 and fast ethernet (10/100) > >895 875 with Ultra-2 support (40MHz sync. + LVD) > > > >The Sym53c876 allows to put two Ultra-WIDE SCSI channels on one PCI > >card, without the need for a PCI to PCI bridge. This is better than > >an Adaptec 3940 with two SCSI chips behind a PPB, since it is cheaper > >and avoids the latency and complexity introduced by the PPB ... > > The Sym53c885 uses the same philosophy and puts a Fast Ethernet > and UltraWide SCSI on one PCI chip. (I'm going to write a driver > for the Fast Ethernet function.) I had only seen the 53c885 announcemt, but wasn't aware of any cards that use that chip. The combination of SCSI and Ethernet on one PCI card is most interesting, since there are just to few slots, always :) Does the Ethernet chip in the 885 share the problem of the DEC Ethernet chips, that requires copying of received packets (due to alignment constraints in the DMA engine, if I understand the problem correctly) ? Anyway: It's great that you are working on a driver for that chip! Regards, STefan
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