Since we passed from QNX 6.0 to QNX 6.1 we are unable to write on the
parallel port in real-time using out8(). We are using the following
ThreadCtl(_NTO_TCTL_IO, 0) ;
We simply do not appear to have control on the parallel port’s output, it
always remains at the same value. The same code worked perfectly on
previous QNX versions. The same thing happenned with several PCs and we also
used a similar algorithm on QNX 4.25 with the same PCs to make sure it was
not a motherboard isssue. We also chacked that devc-par was up and running.
Thanks a lot.