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Altera_Forum's avatar
Altera_Forum
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16 years ago

Can't resolve multiple constant drivers?

Hi, ive been trying to compile the code below in quartus II v9.0 and i get the following error message Error (10028): Can't resolve multiple constant drivers for net "LSD_SEG[0]" at KEYBOARD.VHD(385)...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I can´t find the signal LSD_SEG in the code you posted.

But one of the rules of VHDL is that you cannot assign a signal in more than one place. This error is a result of you assigning a value to the specified signal in more than one place.

Check that you are not assigning this signal outside of a process and inside, or in two or more different processes or in two or more different places outside of a process.

Right clicking on the warning in Quartus and clicking help, should help you to understand why you get this error.