Date: Fri, 23 Feb 1996 14:41:28 -0500 From: dennis@etinc.com (dennis) To: hackers@freebsd.org Subject: Re: 230.400 bps on serial port Message-ID: <199602231941.OAA05279@etinc.com>
next in thread | raw e-mail | index | archive | help
>> Hello Hackers, >> >> I need a reliable data transfer rate of 230.400 bps on the serial port for >> PPP. Can that be done ? getty only has a setting for 115.200 bps. I have a >> Gigabyte 586 ATEP mainboard with FIFOs. Can I use them for 230.400 bps, and >> how ? Or should I buy a special serial card for that ? >> >> Thanks, > >A standard 16550 in normal PC configuration has a maximum port speed of >115,200bps. It can't go at any faster usable speed because you're already >at the smallest usable divisor. > >If you have a real 16550 (i.e. NatSemi, etc), and it's on a card, you can >"overclock" it by a factor of 2 or 4 to give 230,400 or 460,800 bits per >second. This essentially is a crystal replacement with a soldering iron. >Not hard but not for beginners. FreeBSD still thinks that the port is >115,200, you have just changed the underlying hardware to rev up the.. Don't forget to crank up those RS-232 drivers too! db
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199602231941.OAA05279>