| CAUSE: | In a Boolean equation in a Text Design File (.tdf), you assigned a number to a single node. Because the Compiler always interprets numbers as groups and you cannot assign a group to a node, you cannot assign a number to a node. |
| ACTION: | In the Boolean equation, assign numbers to groups only. If you want to assign 0 and 1 to a node, you can use VCC and GND instead of 0 and 1. |
See also:
Implementing Boolean Expressions & Equations
Numbers in AHDL
Using Numbers
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