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Thanks for your answer, I will try this right after this post. But a quick questino before that... why are some other registers in the very same design present in SignalTap?
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*All* of the registers are probably still there, however, the name of the signal you want to probe just doesn't happen to exist at the level you want. For example, lets say I have an FSM signal I call 'enable', and then at a higher level of the hierarchy its called 'rx_pll_enable'. I might want to probe the signal called 'rx_pll_enable', but what Quartus preserves is the 'enable' name down at the level of the FSM, since that is where the driving register is located. By adding the synthesis attribute, you can keep the name you want to probe.
Its a pain, since you often have to re-synthesize the design a couple of times before you get all the synthesis attributes right, but it does work ... :)
Cheers,
Dave
Honored Contributor
