Date: Wed, 6 Aug 1997 00:30:27 -0700 (PDT) From: "Jamil J. Weatherbee" <jamil@counterintelligence.ml.org> To: Brian Somers <brian@awfulhak.org> Cc: "Brian J. McGovern" <mcgovern@spoon.beta.com>, hackers@FreeBSD.ORG Subject: Re: Suggestions for extending minor numbers... Message-ID: <Pine.BSF.3.96.970806002516.186D-100000@counterintelligence.ml.org> In-Reply-To: <199708052302.AAA29396@awfulhak.org>
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4 cyclades 64 port cards in a freebsd machine sounds like a rockin terminal server to me -- you could run it as an isdn terminal server if it was connected via 100baseT, but you would probably want at least 128MB of ram in the thing don't you think -- not to mention wouldn't it need to be a ppro200 to really handle that? Anyway I'd love to see someone actually running something like that. I can't remember if cyclades 64 port cards are syncronous or what -- i saw then at a trade show and bought an 8 port job the type with the octopuss cable the tends to get tangled -- damn good card and company in my opinion, although my version I don't think is synchronous so I don't know how good that would be for running an isdn TA. On Wed, 6 Aug 1997, Brian Somers wrote: > > Well, I've got my driver working for the 8 port Cyclades cards. Now its > > time to work on the 64 port cards. > > > > As you can see, if I have a call in, call out, call in initial state, call > > out initial state, call in lock state, and call out lock state, I'm > > going to need 384 minor numbers, which is already over the 8-bit limit > > on minor numbers. If I choose to support multiple boards, I could use > > between 768, and 1536 minor numbers, possibly more in machines with more than > > 4 PCI slots. With the % of CPU per board the driver is taking, 3 of these > > 64 port boards should be possible.... > > > > Anyhow, I've considered dropping initial and lock state devices, and use > > a different major number for each of the boards. I'm curious to see if this > > is a "reasonable thing to do" (tm), or whether this is a better way to go > > that I haven't yet figured out. > > > > Suggestions anyone? > > Is there an 8-bit limit ? > dev:/dev $ l /dev/rsd0s1 > crw-r----- 1 root operator 13, 0x00020002 Sep 3 1996 /dev/rsd0s1 > > Looks like 32 bits to me :-) > > > -Brian > > -- > Brian <brian@awfulhak.org>, <brian@freebsd.org> > <http://www.awfulhak.org>; > Don't _EVER_ lose your sense of humour.... > > >
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