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Altera_Forum
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11 years ago

Waveform- Forcing Unknown(X)

Hello , i have a problem about the waveform simulation. I have design the mic1 processor and i want to add A[32](bus line) + B[32] ((bus line)=C[32](bus line). For example A=200 and B=0. When i run t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

The simulator typically generates 'x' if you haven't initialised a register/signal that forms part of the combinatorial input logic. So, I'd suggest you haven't connected it up as you think you have or you haven't initialised either 'A' and/or 'B' as you refer to them.

Cheers,

Alex