Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Nios I - Wrong IRQ Vector

I recently noticed a problem with a Nios (not Nios II) design implemented on an APEX EP20K device. At initialization, I set all entries in the interrupt vector table to point to the same routine: it ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Have you synchronized the external UART interrupt lines to the NIOS clock? (the NIOS I interrupt controller doesn't do this for you).