According to TI documentation, after the INT0 maskable interrupt line
is asserted the following should occur:
1.) The corresponding IFR bit is set
2.) If INTM=0 and corresponding IMR bit = 1 then the CPU acknowledges
the interrupt by asserting the IACK signal.
3.) Service Interrupt...etc When I set the INT0 line low, I notice that the IFR bit IS set. The
IMR mask register bit 0 is set (for INT0) and INTM does equal 1,
exactly as the documentation says it should. My problem is that I am
not receiving a IACK signal. I also noticed that the IACK doesn't
even assert during reset or any of the other non-maskable
interrupts. Any ideas?
Thanks for the help!