Английская Википедия:Chisel (programming language)
Шаблон:Short description Шаблон:Infobox programming language The Constructing Hardware in a Scala Embedded Language (Chisel)[1] is an open-source hardware description language (HDL) used to describe digital electronics and circuits at the register-transfer level.[2][3] Chisel is based on Scala as an embedded domain-specific language (DSL). Chisel inherits the object-oriented and functional programming aspects of Scala for describing digital hardware. Using Scala as a basis allows describing circuit generators. High quality, free access documentation exists in several languages.[4]
Circuits described in Chisel can be converted to a description in Verilog for synthesis and simulation.
Code examples
A simple example describing an adder circuit and showing the organization of components in Module with input and output ports:
class Add extends Module {
val io = IO(new Bundle {
val a = Input(UInt(8.W))
val b = Input(UInt(8.W))
val y = Output(UInt(8.W))
})
io.y := io.a + io.b
}
A 32-bit register with a reset value of 0:
val reg = RegInit(0.U(32.W))
A multiplexer is part of the Chisel library:
val result = Mux(sel, a, b)
Use
Although Chisel is not yet a mainstream hardware description language, it has been explored by several companies and institutions. The most prominent use of Chisel is an implementation of the RISC-V instruction set, the open-source Rocket chip.[5] Chisel is mentioned by the Defense Advanced Research Projects Agency (DARPA) as a technology to improve the efficiency of electronic design, where smaller design teams do larger designs.[6] Google has used Chisel to develop a Tensor Processing Unit for edge computing.[7] Some developers prefer Chisel as it requires 5 times lesser code and is much faster to develop than Verilog.[8]
Circuits described in Chisel can be converted to a description in Verilog for synthesis and simulation using a program named FIRRTL.[9]Шаблон:Better
See also
References
External links
Шаблон:Programmable Logic Шаблон:Authority control
