Date: Sat, 20 Jul 1996 12:25:37 -0700 (PDT) From: "JULIAN Elischer" <julian@ref.tfs.com> To: jhay@mikom.csir.co.za (John Hay) Cc: hackers@FreeBSD.ORG, davidg@FreeBSD.ORG Subject: Re: Advice on PCI driver for RISCom/N2pci needed Message-ID: <199607201925.MAA04650@ref.tfs.com> In-Reply-To: <199607200943.LAA12950@zibbi.mikom.csir.co.za> from "John Hay" at Jul 20, 96 11:43:32 am
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there were people asking about using IPX.. have you answered them? I don't think anyone else knows much about it.. > > Hi > > I am busy looking at writing a driver for the SDL RISCom/N2pci card. > > The card uses the same Hitachi HD64570 chip as the Arnet and RISCom/N2 > ISA cards and only have a 24 bit address bus, which means that while > it is a bus master card, its DMA can only "work" in a 16MByte block. It > does have a page register so you can select any 16M block to work in. > > At the moment it looks like the only option is to pre allocate a block > of memory below 16M (maybe using the method BOUNCE_BUFFERS use???) and > copy the mbufs in and out of that. > > Is there somebody with better/other ideas? > > John > -- > John Hay -- John.Hay@mikom.csir.co.za >
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