Re: Serial speed for boot device selection prompt


If you want serial capability in boot0, you should set
BOOT_COMCONSOLE_SPEED=115200 in your make.conf. After you do that,
you'll need to rebuild the boot blocks. The procedure for doing that is
step 4 of Section 24.6.5.2 in the Handbook:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/serialconsole-setup.html

The BIOS call that boot.S is using (int 0x14) only supports a maximum
speed of 9600. To get speeds greater that 9600, it needs to do the
I/O itself. There used to be a version floating around that did this.
I have a extemely modified version that uses this method. If you can't
find a version that does this, let mw know and I'll see if I can cleanup
what I have.

Larry

Thanks, that at least confirmed my theory while reviewing the assembly that boot.S was not capable of
more than 9600.

I'll look around first, but may request the code later.

Sean
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