Date: Wed, 5 Nov 1997 20:50:51 -0500 (EST) From: Evan Champion <evanc@synapse.net> To: Brian Somers <brian@awfulhak.org> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: sio buffer overflows Message-ID: <Pine.BSF.3.96.971105204554.14865A-100000@cello.synapse.net> In-Reply-To: <199711060008.AAA03991@awfulhak.demon.co.uk>
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On Thu, 6 Nov 1997, Brian Somers wrote: > What's a 16650 (is this the thing w/ the 256 byte FIFO) ? 32 byte, on-chip flow control and 460.8 Kbps max port speed. > ppp doesn't support multilink PPP yet. This is a Bitsurfr Pro which takes care of the multilinking and passes a pure PPP datastream to the serial port. The software needn't know or care about multilinking. > If the port speed is set to 57600, then that's the maximum data rate > (although you may get more if you're using PREDICTOR1 and/or VJ > compression). No, 16650's run the port at 4x whatever speed you set it to. So a port set at 57600 is treated as 230.4 Kbps. It is a rather nice way of getting around software that doesn't understand the higher port speeds and works everywhere. Evan
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