ANSWER:
Hello All,
More web searches revealed the answer. (Thanks to the documentation
for the UPP driver on
www.Thesycon.de.)
To get the interrupt enabled one must:
- enable the interrupt (7) for the parallel port in the BIOS.
- in the device manager settings, enable interrupts on LPT1
- in the device manager resources, select the configuration which
uses INT7.
Without all 3 of these things (and the interrupt number specified
in the BIOS matching the interrupt number in the device manager
resources) your driver will not receive an interrupt.)
[ NB. Of course the driver code must be trying to catch the
same interrupt (7). ]
Too bad this information was not included in chapter 8 of "The Windows
2000 Device Driver Book" with the sample code. (or I missed it.)
Don