On Sun, Nov 14, 2004 at 10:39:13AM +0200, Danny Braniss wrote: > what's the magic encantation to set the console to 38400? > btw, i solved my problem by just commenting out that part of the code, > since i rely on the bios setting it. > > from src/sys/boot/i386/boot0/Makefile: > > # Comm settings for boot0sio. 0xE3 => 9600 8-N-1 > # XXX: We should create a build-tool or something to convert > BOOT_CONSOLE_SPEED > # and BOOT_COMCONSOLE_PORT into the correct values to define on the build > # command line > BOOT_BOOT0_COMCONSOLE_SPEED?= 0xE3 > This is the value passed in the AL register to the Int 14/AH=00h BIOS function:
http://www.ctyme.com/intr/rb-0811.htm
: Bit(s) Description (Table 00300)
: 7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
: 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
: 2 stop bits (set = 2, clear = 1)
: 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
0xE3 = 111-00-0-11 = 9600 bps, no parity, 1 stop bit, 8 data bits
But I think it's not possible to set it to anything above 9600 bps
using this BIOS call.
Cheers,
--
Ruslan Ermilov
[EMAIL PROTECTED]
FreeBSD committer
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