Forum Discussion

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

How to wire to signal tap?

(* keep = 1 *) wire rx_bar_hit/* synthesis keep */; assign rx_bar_hit = (rx_desc | rx_desc) ? 1'b1 : 1'b0; But I can't add this signal to Siganl Tap. If I add this signal manualy (just type t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

--- Quote Start ---

Hi,

it looks like that, but you can try to capture the wire signal with a register and preserve the register with "noprune".

Kind regards

GPK

--- Quote End ---

Hi,

I looked into the Quartus Help and found this restriction for "keep":

"You cannot use this synthesis attribute for nodes that have no fan-out."