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Altera_Forum's avatar
Altera_Forum
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15 years ago

Problems with read transfer

I have connect a simple read-write- component in my system. When i do a read transfer, i only get the hexidecimal value ffffffff and i don't know why. ... unsigned long read; read = IORD_3...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I think that when you have low active signal (as you did for the read and write enable signals), you need to end their name with _n instead of just n. If SOPC builder doesn't see the _n in the name, it will assume that they are active high signals.

Either rename then with something that ends with _n or use them as active high signals in your code.