Date: Sat, 28 Aug 1999 01:28:26 -0700 From: Mike Smith <mike@smith.net.au> To: Kris Kirby <kris@airnet.net> Cc: "Daniel O'Connor" <doconnor@gsoft.com.au>, hackers@freebsd.org Subject: Re: Are the ethernet drivers time dependent? Message-ID: <199908280828.BAA02068@dingo.cdrom.com> In-Reply-To: Your message of "Sat, 28 Aug 1999 03:29:20 CDT." <37C79DE0.8045C21@airnet.net>
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> > Both. The problem is that you can't cram a signal moving at 10 Mbps > through a radio interface designed for 256K, even if it is bandwidth > limited to 256K. I'm hoping the 3C503 is ancient enough that I can slow > it down by yanking it's 20.0000 MHz crystal oscillator and feeding it a > lower speed signal. I'm going to walk them down to see just how far I > can go. After all, 2 Mbps isn't bad, it just requires a little more > work. The 8390 should be functional down to 1MHz or so, and I don't think that signal is used for any other chip functions. You can take the i82586 a lot slower; I recall several S/HDLC-like cards that used them as USRTs in the hundreds of kilobits per second range. Bearing in mind that both the 8390 and the 82586 were designed back when 10MBps was "fast" ethernet. -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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