Date: Fri, 15 Nov 1996 11:52:30 -0500 From: dennis@etinc.com (dennis) To: John Hay <jhay@mikom.csir.co.za> Cc: isp@freebsd.org Subject: Re: Decision in Router Purchase Message-ID: <199611151652.LAA04351@etinc.com>
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>> >> Is SDL forthcoming with the technical information required >> >> to write and maintain drivers? >> >> >> >> Jim Shankland >> >> Flying Fox Computer Systems, Inc. >> >> >> > >> >Yes, I have written the driver with the information they have given me. >> >They have been very helpful. They even supplied and shipped 2 N2 boards >> >and a N2pci board from the USA to me here in South Africa. >> > >> >The bulk of the driver has to do with the Hitachi HD64570 chip that the >> >board is using and that information is in the Hitachi data sheets. The >> >information about how the chip is interfaced to the rest of the board >> >is actually very little, because most (all) of the work is done by the >> >chip. The rest of the board is actually just RAM, bus arbitration logic >> >and line drivers. >> >> gee, sounds just like their (and our) original "archaic" board designs! >> Wonder what Jim was talking about....... >> > >Maybe he was talking about the N2pci? It does not have its own RAM on >the card but use the system memory and get/put the data directly from/to >there. I thought that thats what YOU were talking about? Bus mastering is not a new design....its a design "choice". Dennis
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