很好理解,当valid置1时,bits输出有效;当valid置0时,bits输出无效。 2. object Valid提供一个创建Valid接口的工厂方法 Companion object Valid起到的作用是一个工厂方法,可以省略new的使用,直接创建一个valid对象: val enq = Input(Valid(gen)) 3. 附录 Valid.scala: /** Wrappers for valid interfaces and ass...
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For other types, Chisel will let you connect them, but may truncate/pad bits as appropriate. Bool/UInt to Bool/UInt Bundle to Bundleclass Bundle1 extends Bundle { val a = UInt(8.W) } class Bundle2 extends Bundle1 { val b = UInt(16.W) } class BadTypeModule extends Module { val ...
firstTest.scaladefines three classes.FirstTestis the “main method” for the test, and the two other classes define a circuit (MyModule) and a test (TestRunner) to be run on that circuit. By extending Matchers and FlatSpec theFirstTestclass gains access to syntax that is unfamiliar even if...
But if you take the time to learn how to write generators, then the power of Chisel will become apparent and you will realize you can never go back to writing Verilog. Learning to write generators is difficult, but we hope this tutorial will pave the way for you to become a better ...
You must provide defaults for complex and clock parameters either via the JSON file or via an instance of GeneratorParams. Note that defaults can be overridden on a case-by-case basis. intBits and fracBits specify the # of integer bits and # of fractional bits respectively used to ...