As I had problems finding any examples, that I could adapt I am writing here now.

I want to use the PIT (programmable interval timer, https://wiki.osdev.org/Programmable_Interval_Timer ) in a C program for DOS. I want to peridiocally update a user interface.

How would I write a ISR in watcom c? Do you know of any programs making use of this, where I can look at?


Thanks in advance,

Nils



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