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
portrait-mode?

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?