Forum Discussion

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

Instantiating LPM Functions in VHDL: parallel adder

Hello guys... I'm trying instatniating some altera MF directly in my top design. From what I have understand I have two use two libraries: library altera_mf; use altera_mf.altera_mf.c...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

The parallel_add returns a nbit+1 output with 2 nbit input as I can see, viceversa the lpm_add_sub gives you a nbit out whith 2 nbit input. So if I don't want to incur in overflow problems I've thought to add a 0 on each of the two inputs..

Am I right ?