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Altera_Forum
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15 years ago

rdusedw not count in my dcfifo

rdusedw not count in my dcfifo EP3C16F256C8N Quartus II 9.1 sp2 a dcfifo generated by megawizard plugin manager. rdclk: 75MHz wrclk: 40MHz this is a snipping image of a running signal...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Thank Kaz and BadOmen!

I wrote a test bench and simulated in modelsim.

It really settle at 0!

It fixed after I checked the "Add an extra MSB to usedw port" option.