Date: Fri, 20 Nov 1998 01:31:08 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: rnordier@nordier.com (Robert Nordier) Cc: rock@cs.uni-sb.de, rnordier@nordier.com, freebsd-current@FreeBSD.ORG Subject: Re: /boot/loader & comconsole Message-ID: <199811200131.SAA23560@usr09.primenet.com> In-Reply-To: <199811191125.NAA05575@ceia.nordier.com> from "Robert Nordier" at Nov 19, 98 01:25:40 pm
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> > Using the BIOS for configuring the serial ports gives you also only > > 9600 bps. I usually ran the comconsole at 19200 bps. But the original > > BIOS int 0x14 services seem only support up to 9600 bps. I did a > > small patch on the bootblocks, so that it uses the "extended communication > > port control" service. I don't know if good ole 386 BIOS implement this > > routine, but it works on my machine (I think it was introduced with the > > PS/2 PCs). > > I'm not sure, either, how many BIOSes support this. The documentation I > have suggests it is PS/2-specific, though it appears it's supported on > at least some of the machines here. You can determine support by the return value from the call. Most BIOS support up to 115k now, at the expense of some of the lower baud rates. See the Ralf Brown list for details, or any one of dozens of books on serial I/O on the PC. Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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