Hello I'm trying to learn chisel and I'm compiling an existing project, but I get a problem with the mem instantiation :
How can i modify the int type to type T and what is type T ?
Waiting for your answers.
Thank you.
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Please see the Chisel3 Wiki: https://github.com/freechipsproject/chisel3/wiki/Memories – Jack Koenig Jul 20 '18 at 19:53
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type T needs to be a subtype of Data. It appears numAddresses is an Int
From the UC Berkeley Chisel guide it looks like subtypes of Data include
- Bool, SInt or UInt
- Bundle or Vec
From here it looks like you could convert a Scala Int to a UInt as numAddresses.U (I assumed numAddresses is non-negative)
joel
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Thank you Joel for your answer. How can i define numAddresses as a subtype of Chisel.Data ? – HAMZA Jul 19 '18 at 12:47
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this is what i get : value asUInt is not a member of Long [error] val numAddresses = scala.math.pow(2, addressSize).round.asUInt – HAMZA Jul 20 '18 at 18:41
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isn't asUInt for casting SInt to UInt? don't you need `.U` rather than `.asUInt`? – joel Jul 20 '18 at 22:06
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value U is not a member of Long [error] val numAddresses = scala.math.pow(2, addressSize).round.U – HAMZA Jul 21 '18 at 09:58