boot0sio working for anyone?
Scott Long
scottl at samsco.org
Fri Feb 8 20:38:48 UTC 2008
Bruce M. Simpson wrote:
> Ulrich Spoerlein wrote:
>> So, is boot0sio supposed to just work with a cheap USB->RS232 dongle at
>> the other end? I don't know how this paragraph from boot0cfg(8) is
>> affecting me.
>>
> boot0sio is wholly dependent upon BIOS support for addressing the
> on-board COM1 port. It is not intended (read: very unlikely) to work
> with USB dongles.
>
> If your BIOS does not support the call that it uses, then the symptoms
> will be similar to what you've seen. Unfortunately there is just not
> enough space in the MBR to implement any workarounds for this.
>
Yeah, unless the BIOS provides traditional SIO emulation via USB
(similar idea to providing tradition AT keyboard emulation via USB)
then boot0sio won't work. It's not very feasible to put a USB
stack into the early boot loader anyways. It's somewhat possible
(at least, using a chained boot loader), but not very feasible.
Scott
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