tech-kern archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
RE: ddb input via IPMI virtual console
>> The real keyboards are PS/2 and I can't change that because it runs
>> on a wire physically passing a /real/ firewall, [...]
>
>(a) Is it possible to run USB over the same conductors used by the PS/2
>cable? (This is a real question; I don't know enough about layer 1 of
>either to answer it.)
Great question. The answer is "yes, if you're desperate". Keyboards are
low-speed or full-speed USB devices, and the signaling is relatively
non-critical -- especially if you find a low-speed keyboard. However:
>(b) There exist devices that adapt PS/2 to USB in the
>PS/2-keyboard-to-USB-host direction.
Since the problem is that the real keyboards are PS/2, the adapters sound
perfect.
https://www.newegg.com/Mouse-Keyboard-PS2-Adapters/SubCategory/ID-3024 US$
6.... pretty reasonable.
Put it in the machine room, use the existing PS/2 keyboards, and... isn't
the problem solved? If you need USB as well from another source, use a hub
(in the machine room). But I confess I'm not clear about that part of what
you're trying to do.
--Terry
Home |
Main Index |
Thread Index |
Old Index