Forum Discussion

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

Help with Bit Extraction

I have a basic question about the following: MIN_GAIN : unsigned(13 downto 0) := b"10000000000000"; -- 0x2000 gain_in : in std_logic_vector(13 downto 0); val : unsign...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

You have two stages:

subtraction followed by addition of 1 to those 3 bits

first: it doesn't make much sense as you lose a lot of bits (11 bits set permanently to zero)

second: if you want subtraction and addition in one clock then you might just put one of them outside the clocked process

since either way it implies one clock period for both operations.