Portrait-mode video support in QNX4?

I need to know if QNX 4 can display video in portrait mode. The target
is National’s Geode processor (GX1).

Is portrait-mode dependent on both the hardware and the driver, or just
the driver?

If it is only dependent on the driver is there a driver available that
already supports portrait- mode?

If not, is it a massive undertaking to modify the driver to enable

OK. That last question is dependent on my skill level, which is pathetic
(at this point). So, do you have any idea how much I would have to pay
someone to do the modification if it is over my head?