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Altera_Forum's avatar
Altera_Forum
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12 years ago

cant find the problem with my code

Hi everyone, i am using DE0-nano cyclone IV E. Basically im using the LEDs to signal whether i have over counted. I do not know what is wrong but my integer range doesn't seem to limit the count, and...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

The ripple clock discussion is not directly related to your question about LED0 output behaviour. It's a general point about bad design style. It's not being said that ripple clock style causes the behaviour.

Regarding LED0 output, you apparently never looked at the compilation warnngs. Otherwise you'll noticed that LED0 is reported as pin stucked to VCC. Why? LED0 isn't initialized in the design and never reset to 0. If you have enabled "power up don't care" in synthesis settings (by default), the respective register is optimized away in compilation. If you want LED0 set to '0' at start, include it in the reset action.