Hi all,

I am trying to get uC/OS-II running on an LH75401 SDK, and am having trouble generating a simple interrupt through the VIC. I have RAM relocated to address 0, an instruction set in the IRQ vector (18H) to load the address of the ISR entry, and an ISR that reads from the vic vector address, and the vic setup to pass an interrupt from timer 0.

I am trying to test this by raising the timer 0 interrupt using the vic software interrupt register. I can step through my code (Signum emulator), watch the initialization, manually clear the I bit in CPSR, and then execute the line to raise the timer 0 interrupt. I then expect to see the code pass through the IRQ vector, and to the ISR. This does not happen; it looks like the interrupt is not seen.

Any help or comments on my above described init/test sequence, examples of setting up the vic, or an existing port of uC/OS-II to the LH75401 would be greatly appreciated.

Thanks,

-Rob