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Altera_Forum
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12 years ago

signal'last_value: when can I use it?

Hello people! I am kind of new to VHDL and I was wondering when one can use the X'last_value for a signal and when does that have a meaningful value. I mean except for the use with the clock si...
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Altera_Forum
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12 years ago

It may be useful for simulation, but I don't think it will be too helpful for synthesis. Instead I think you will have to make use of a basic register to store the previous value.