Date: Mon, 1 May 1995 15:51:52 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> To: se@MI.Uni-Koeln.DE (Stefan Esser) Cc: paul@isl.cf.ac.uk, current@FreeBSD.org Subject: Re: NCR 53C700 Message-ID: <199505012251.PAA13044@gndrsh.aac.dev.com> In-Reply-To: <199505012135.AA18437@FileServ1.MI.Uni-Koeln.DE> from "Stefan Esser" at May 1, 95 11:35:54 pm
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> On the other hand, there is only one motherboard > that comes with oboard 53c700 chips (sold by > Siemens/Nixdorf). I know of no add on cards with > that chip, and of no other system that has it > on the motherboard. Acculogic ISA and VLB cards use 53C7XX's of some type, I can't find my product data sheet right now :-(. > } Anyone planning to get it working? > > It wouldn't be to hard to modify the NCR 53c8xx > driver for the 7xx. This would require patches > to the program loop executed by the NCR (all the > "interrupt on the fly" commands must be replaced > by standard interrupt commands, for example). > > I'm not sure about the DMA engine or need of an > external DMA controller, but I can check the > details in a 53c7xx data book. > > But I don't have the hardware, and I don't think > many others have, so I currently don't intend to > put any effort in support for the 7xx. (What kind > of machine do you have this controller in ?) > > Trying to write a driver without physical access to > a machine to run it on would be a silly idea, IMHO :) The LINUX driver supports both 53C7XX and 53C8XX, maybe some arrangements can be made to get you some hardware. -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD
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