有条件的批量连接<>

Question

我想进行双向总线的条件批量连接，其概念如下所示。

val io = IO(new Bundle {
  val master = Decoupled(UInt(8.W))
  val slave0 = Flipped(Decoupled(UInt(8.W)))
  val slave1 = Flipped(Decoupled(UInt(8.W)))
  val select = Input(Bool())
})

when (select) {
  io.slave0 <> io.master
  io.slave1 <> some_null_decoupled
}.otherwise {
  io.slave1 <> io.master
  io.slave0 <> some_null_decoupled
}

这比必须单独描述io.master.ready，io.slave0.bits，io.slave0.valid等信号的逻辑要干净。

是否存在与此语法类似的语法？当我在代码中尝试此操作时，会收到很多firrtl.passes.CheckInitialization$RefNotInitializedException消息。

Answer 1

我怀疑问题与mutate(df, sum = a+b)的描述有关。除了缺少some_null_decoupled的事实之外，这看起来还不错。以下对我来说很好（使用Chisel 3.1.6）：

some_null_decoupled

这完全有帮助吗？否则，您能否提供更多信息，例如import chisel3._ import chisel3.util._ class ConditionalBulkConnect extends Module { val io = IO(new Bundle { val master = Decoupled(UInt(8.W)) val slave0 = Flipped(Decoupled(UInt(8.W))) val slave1 = Flipped(Decoupled(UInt(8.W))) val select = Input(Bool()) }) val some_null_decoupled = Wire(Decoupled(UInt(8.W))) some_null_decoupled.ready := false.B when (io.select) { io.slave0 <> io.master io.slave1 <> some_null_decoupled }.otherwise { io.slave1 <> io.master io.slave0 <> some_null_decoupled } } object ConditionalBulkConnectTop extends App { chisel3.Driver.execute(args, () => new ConditionalBulkConnect) } 的实现和Chisel的版本？