Tetramax Clock Rule Warning

[sampham04]

Hi,

I am trying to generate test patterns for a finite state machine through Tetramax with and without a scan chain. I was able to do it after inserting the scan chain, but when I try to do it without the scan chain I get a warning when I perform the DRC.

The warning I get is: Warning: Rule C2 (unstable nonscan DFF when clocks off) was violated 3 times.

When I report the violations I get: Warning: Clock PIs off did not force off clock input 1 of nonscan DFF \state_reg[0]/p_dregclear0 (31). (C2-1).

Can anyone tell me how can I fix this, please?

Thank You!!

 

[maizic]

I meet the problem today, I think it's reset related, while previous DFF(this DFF use original reset for example) output (the DFF output Q is dffoutRESET) as many other DFF's reset, this will cause insert scan failed.

so I add a MUX like assign generateRESET= SCANMODE? orignalRESETt: dffoutRESET; but this still can't solve this problem, I am debuging, somebody
give some way?thanks