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Altera_Forum
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12 years ago

Error 10029: Constant Driver, Error 10028: Can't resolve multiple constant drivers

Hi, I am trying - processing/start/start analysis and elaboration - in Quartus 2 for the following VHDL code: code: library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all; ...
Altera_Forum's avatar
Altera_Forum
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12 years ago

In simple words, a signal can't be asigned a value more than once in concurrent code or in more than one process.

In hardware terms, it's like two logic outputs driving one signal without a mux. You'll find more detailed information in your favourite VHDL text book.