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Altera_Forum's avatar
Altera_Forum
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16 years ago

Simple Question

Hi all, I am new to VHDL, I have a question, I saw the code with this line a <= X "FF" ; Why they put X" " in front of FF, what's difference with the normal assign operator a <...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hello,

there's no different in the assignment operator, the difference is in what is being assigned.

X"FF" is a hexadecimal constant (255)

FF would be a signal named FF.