Forum Discussion

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

NIOS : INTERNICHE stack without ucOSII

Hello I'd like to use the interniche stack and the TSE ethernet mac, but without ucOSII.. I've heard, it exist a superloop example but it seems a lot of files patching is mandatory. D...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I'd guess that is an asm function that calculates the IP checksum.

Doing that on the nios will be a PITA - since it is normally done using a 32bit 'add with carry' and the nios doesn't have a carry flag!

The quickest way would be a custom instruction that adds the high and low 16bits (of a 32bit value) together, and then adds that to a running total.

That might work with a C control loop.