Chisel

Chisel3: Partial assignment to a multi-bit slice of a Vector IO

由 佐手、 提交于 2019-12-06 08:16:55
It is possible to make a partial assignment to a vector IO as follows: import chisel3._ class example_1 extends Module { val io = IO(new Bundle { val in1 = Input(Vec(4, Bool()) val out1 = Output(Vec(4, Bool()) }) for (I <- 0 to 3){ io.out1(I) := io.in1(I) } } Is it possible to make a partial assignment to a multi-bit slice of a vector. The following code doesn't work import chisel3._ class example_1 extends Module { val io = IO(new Bundle { val in1 = Input(Vec(4, Bool()) val out1 = Output(Vec(4, Bool()) }) for (I <- 0 to 1){ io.out1((I*2)+2-1, I*2) := io.in1((I*2)+2-1, I*2) } } One would

Simplest way to generate Verilog code from Chisel code

由 ☆樱花仙子☆ 提交于 2019-12-06 05:12:15
问题 What is the simplest way to generate Verilog code from existing Chisel code? Would i have to create my own build file ? For example from a standalone scala file (AND.scala) like the following one.. import Chisel._ class AND extends Module { val io = IO(new Bundle { val a = Bool(INPUT) val b = Bool(INPUT) val out = Bool(OUTPUT) }) io.out := io.a & io.b } I have the complete Chisel3 Toolchain installed under ubuntu 16.4. 回答1: See answer here: Is there a simple example of how to generate verilog

How to instanciate Xilinx differential clock buffer with chisel3 blackboxes?

由 心不动则不痛 提交于 2019-12-05 19:09:05
I want to write a simple chisel3 blinking led design on my AC701 kit (artix7). But to do that I have to instantiate a clock input differential buffer. Xilinx give the following verilog template to do that : IBUFDS #( .DIFF_TERM("TRUE"), .IOSTANDARD("DEFAULT") ) IBUFDS1_inst ( .O(clock1), // Clock buffer .I(clock1_p), // Diff_p clock .IB(clock1_n) // Diff_n clock ); I read on chisel documentation that I have to use «blackbox» class to instantiate it. But I can't do it. I tried this : class IbufdsParam extends VerilogParameters { val DIFF_TERM = "TRUE" val IOSTANDARD = "DEFAULT" } class IBUFDS

How to do a vector of modules?

由 ≯℡__Kan透↙ 提交于 2019-12-04 05:22:40
I want to instantiate a one dimensional array of element, and element extends Module. How would I do this? If I say my best guess, which is: val elements = Vec( 64, new element ) I get the following error message: [error] /Users/mykland/work/chisel/array.scala:20: overloaded method value apply with alternatives: [error] [T <: Chisel.Data](n: Int, gen: => T)Chisel.Vec[T] <and> [error] [T <: Chisel.Data](elt0: T, elts: T*)Chisel.Vec[T] <and> [error] [T <: Chisel.Data](gen: => T, n: Int)Chisel.Vec[T] [error] cannot be applied to (Int, ascenium.element) [error] val elements = Vec( 64, new element

Chisel language how to best use Queues?

由 十年热恋 提交于 2019-12-02 11:29:21
问题 I'm new in chisel, if someone can explain the role of: 1- Queue 2- DecoupledIO 3- Decoupled 3- ValidIO 4- Valid Is this piece of chisel code correct? ... val a = Decoupled() val b = Decoupled() val c = Decoupled() ... val Reg_a = Reg(UInt()) val Reg_b = Reg(UInt()) ... when(io.a.valid && io.a.ready && io.b.valid && io.b.ready && io.c.valid && io.c.ready) { Reg_a := io.a.bits.data Reg_b := io.b.bits.data } io.c.bits := Reg_a & Reg_b ... Module.io.a <> Queue(Module_1.io.a_1) Module.io.b <>

Is there a simple example of how to generate verilog from Chisel3 module?

由 做~自己de王妃 提交于 2019-11-29 02:17:05
I'm looking for a simple howto to convert a simple Chisel3 module in Verilog. I take Gcd source code given on official web page of chisel. import chisel3._ class GCD extends Module { val io = IO(new Bundle { val a = Input(UInt(32.W)) val b = Input(UInt(32.W)) val e = Input(Bool()) val z = Output(UInt(32.W)) val v = Output(Bool()) }) val x = Reg(UInt(32.W)) val y = Reg(UInt(32.W)) when (x > y) { x := x -% y }.otherwise { y := y -% x } when (io.e) { x := io.a y := io.b } io.z := x io.v := y === 0.U } I can't find a how to write a build.sbt and class instantiation for converting it in Verilog.

Is there a simple example of how to generate verilog from Chisel3 module?

由 笑着哭i 提交于 2019-11-27 02:51:42
问题 I'm looking for a simple howto to convert a simple Chisel3 module in Verilog. I take Gcd source code given on official web page of chisel. import chisel3._ class GCD extends Module { val io = IO(new Bundle { val a = Input(UInt(32.W)) val b = Input(UInt(32.W)) val e = Input(Bool()) val z = Output(UInt(32.W)) val v = Output(Bool()) }) val x = Reg(UInt(32.W)) val y = Reg(UInt(32.W)) when (x > y) { x := x -% y }.otherwise { y := y -% x } when (io.e) { x := io.a y := io.b } io.z := x io.v := y ===

大道至简——RISC-V架构之魂（转载）

由 [亡魂溺海] 提交于 2019-11-27 01:17:13
1: https://blog.csdn.net/zoomdy/article/details/79580529 2: https://blog.csdn.net/zoomdy/article/details/79580772 3: https://blog.csdn.net/zoomdy/article/details/79580949 4: RISC-V相关的开源项目 https://blog.csdn.net/u013710265/article/details/70332671 和RISC-V相关的有如下一些开源项目： 工具链 1、riscv-tools - 基本上所有RISC-V相关工具链、仿真器、测试的宏项目，包含以下的项目 riscv-gnu-toolchain - GNU工具链 riscv-gcc - GCC 编译器 riscv-binutils-gdb - 二进制工具（链接器，汇编器等）、GDB 调试工具 riscv-glibc - GNU C标准库实现 riscv-isa-sim - Spike周期精确指令集模拟器 riscv-llvm -LLVM编译器框架 riscv-clang - 基于LLVM框架的C编译器 riscv-opcodes - RISC-V操作码信息和转换脚本 riscv-tests - RISC-V指令集测试用例 riscv-fesvr -
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