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Altera_Forum's avatar
Altera_Forum
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11 years ago

Gate functions dont work correctly on FPGA

Hello,i am new to the forum and to fpgas.I have recently bought a Cyclone FPGA from ebay with the ep1c3t144c8 chip on it,and have tried to do simple logic gate functions with the dip switches and the...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Maybe your inputs are active low : it is common with push buttons. Button pressed means input = 0.

maybe your LED is illuminating when output = 0.