SignalTap issue

hi David,

in my case i had to add this constrain in my top sdc file :

# **************************************************************

# Create Clock

# **************************************************************

create_clock -name {altera_reserved_tck} -period 30.303 [get_ports {altera_reserved_tck}]

the values might be different in your case even though i think these are the ones to be used.

the "altera_reserved_tck" is the one clock used to drive JTAG so constraining it can not harm your design.

In my case this seemed to stop the weird results i was having on SignalTap.

Tell me if you need more information.

Yannick