Go to core.c and change the init assignment of IRQ 83 from level handler to edge handler
(must be a smoother way, no?). Then:
IRQ 5 (PC) = IRQ 22 (ARM) = IRQ 83 (Lynnert?)
This IRQ control is found at bit index 3 of Port F of GPIO.
When properly activated, cat /proc/interrupts shows IRQ 83 as "GPIO" for the type, NOT "VIC".
Is there any historical perspective on what's happened to Lynnert's code a.k.a. how we got here? (thanks!)
Despite our experimenting with IRQ6 and IRQ7 equivs, apparently only IRQ5 can be put into
edge-trigger mode. It appears therefore that we may have to blue-wire all of our TS-SER2
boards to jumper IRQ7 output on TS-SER2 to the IRQ5 pin of the PC104 bus.
Anyone been able to get either IRQ7 or IRQ6 (pins B11 & B12 of PC/104) to operate in edge
mode?
Thank you very much
-- Clark