> > USB doesn't present a 16550A interface to the host, so I don't think
> > that sio would have a USB attachment.
>
> So there's going to be manufacturer-specific terminal/serial port drivers
> to talk to the serial ports on USB-attached laptop docking stations, like
> the Annex ethernet terminal server things?
Presuming we are able to get any documentation out of any of these
vendors; so far USB serial ports have been one of the worst things to
enquire about.
> I guess in the Windows world
> they must provide 16550-virtualisation software, or else everyone's copy of
> Telix or TeraTerm won't work. Or the parallel ports vs parallel-port
> scanners. Or maybe these docking stations just won't work at all...
Anything running under Windows uses the Windows COM driver or a
replacement. If it's running in a DOS box, then it uses the 16550
virtualisation services that Windows offers, which layers over the COM
driver or workalike.
Basically, the same way that OS/2 does it.
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