🚀 go-pugleaf

In <1bkdi1INN7cq@eagle.natinst.com> Malathi Ramdas writes:
>   I am writing a charater based instrument control device driver for OS/2 2.0.
>I am using the C callable DevHlp functions using drvlib.lib file. I use the SetIRQ
>to install the interrupt service routine. I have followed the procedures as is
>stated in the book (Writing OS/2 device drivers in C) and the sample programs. But
>For some reason the interrupt service routine is not getting installed. I know
>that there is no interrupt conflict and when I check the bits in our
>instrument control board's registers that should have caused the interrupt I
>see that they are set. But for some reason the ISR never gets invoked (maybe
>b'cos it never got installed). The SetIRQ function which I call during initia
>lization time returns without any error indicating that the ISR was installed
>successfully. Would any device driver expert know what could be missing in
>my device driver that is causing this problem?
>   Thanks
>Malti Ramdas
>

Most devices have an Enable/Disable bit/flag one of it's registers/ports.
See if your device has such a bit/flag and enable it for interrupts.