Forum Discussion

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

ALTFP_MUL as custom instruction not reseting variable value.

Hello. I´m trying to do a simple float point multiplier for Nios E. My custom instruction is just ALTFP_MUL block with a top level with clk, clk_en, reset, and the two 32bits inputs and on...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Changing the instruction latency to 12 works.

So, I conclude it has to be at least one more cycle than the float point block.