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YaGaRa12's avatar
YaGaRa12
Icon for New Contributor rankNew Contributor
6 years ago

How can I pick some bits from bus in Quartus?

Hi, I'm trying to select a part of the bus, from the output "Salida_alu" which is 32 bits [31..0], I am only interested in 4 bits [3..0] to enter them in the Func input. I have done it in several way...
sstrell's avatar
sstrell
Icon for Super Contributor rankSuper Contributor
6 years ago

Vicky is saying you don't need separate bit taps for each bit. You already named the vector correctly (Salida_alu[3..0]) so just connect it directly. The bigger issue I see is that you'll have multiple drivers directly driving ALU_DER. Should there be some logic to select between Salida_alu[3..0] and Entrada_Func_Alu2[3..0]?

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