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andy25's avatar
andy25
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

Nios V exception code

I have a Nios V and an "Avalon FIFO Memory Intel FPGA IP" fifo I'm trying to read in C. I can read the status and length just fine: // works int len = altera_avalon_fifo_read_level(IPMB_FIFO_IN_C...
Nios Cpu
andy25's avatar
andy25
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

The problem was caused by Platform Designer's System -> Assign Base Address to assign the FIFO's out base address to an odd number.

When I change the base address (IPMB_FIFO_OUT_BASE) to an even number it no longer crashes.

I'm still curious where I can find a list of exception codes, or find info about what a 4 means.

-Andy