Serial port, DTR & CTS

=?iso-8859-1?q?Etienne=20LORRAIN?= (etienne_lorrain@yahoo.fr)
Thu, 11 Nov 1999 16:18:45 +0100 (CET)

David.Monniaux@ens.fr écrit:
> I have a special device connected to a serial port on my PC (it is a
> microcontroller); the RTS and DTR lines are used to reset it and select
> the programming mode.

If you are not using the "serial line" feature of an UART,
just say to the kernel that there is no UART there - exclude
from probe.

Then you can control the lines the way you want, this I/O
memory is no more reserved (outb will work as root, or write
a module).

Etienne.
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