SignalTab sometimes not working on Stratix III

[Altera_Forum]

Hello.  

We've got problems with SignalTab II on Stratix III. Sometimes, after some compilation SignalTab stop working. When I run acquiring (Single Run or Autorun) it shows message "Acquiring pre-trigger data" and hangs in that state. It doesn't mean if I choose trigger conditions or not chosen trigger at all. Restarting acquiring in signaltab doesn't solve problem.   The only things that helps is changing project in some way - add/remove some probes in signaltab setup window and recompile project.    Device: Stratix III EP3SL110F1152C2   Quartus 9.1 sp2   Windows XP SP3  One compilation takes about 20-30 minutes, so it very boring to find that after some changes in project Signaltab not working.   Please help!

[Altera_Forum]

--- Quote Start ---  Hello.   We've got problems with SignalTab II on Stratix III. Sometimes, after some compilation SignalTab stop working. When I run acquiring (Single Run or Autorun) it shows message "Acquiring pre-trigger data" and hangs in that state. It doesn't mean if I choose trigger conditions or not chosen trigger at all. Restarting acquiring in signaltab doesn't solve problem.   The only things that helps is changing project in some way - add/remove some probes in signaltab setup window and recompile project.    Device: Stratix III EP3SL110F1152C2   Quartus 9.1 sp2   Windows XP SP3  One compilation takes about 20-30 minutes, so it very boring to find that after some changes in project Signaltab not working.   Please help!  --- Quote End ---    Hi,  what clock are you using for capturing the data ?  Kind regards  GPK

[Altera_Forum]

We are using ALT_PLL output - 400 MHz, which is made from input clock 10 MHz.

[Altera_Forum]

--- Quote Start ---  We are using ALT_PLL output - 400 MHz, which is made from input clock 10 MHz.  --- Quote End ---    Hi,  are you sure that signaltap could run at that speed ? No timing violations in the timing reports ?  Kind regards  GPK

[Altera_Forum]

Of cource, it supports this frequency, because it C2 speed grate. Anyway, we were tring to slow speed of sampling in SignalTab to 200 or 100 Mhz. And we had same problems with: 

"Acquiring pre-trigger data"...

[Altera_Forum]

--- Quote Start ---  Of cource, it supports this frequency, because it C2 speed grate. Anyway, we were tring to slow speed of sampling in SignalTab to 200 or 100 Mhz. And we had same problems with: "Acquiring pre-trigger data"...  --- Quote End ---     Hi,  any setup or hold time violations ? Hold time violations could not be solved by reducing the clock speed.  Kind regards  GPK