You need to reverse the nesting inside the generate block: genvar c; generate for (c = 0; c < ROWBITS; c = c + 1) begin: test always @(posedge sysclk) begin temp[c] <= 1’b0; end end endgenerate Technically, this generates four always blocks: always @(posedge sysclk) temp[0] <= 1’b0; always @(posedge sysclk) temp[1] <= 1’b0; … Read more
Thank you for your interest in Chisel! We generally encourage people to use our chisel-template repo as a starting point for Chisel3 projects: https://github.com/ucb-bar/chisel-template If you want to do the most barebones possible thing. Create this build.sbt and put it in the root directory for your project. scalaVersion := “2.13.8” addCompilerPlugin(“edu.berkeley.cs” % “chisel3-plugin” % “3.5.3” … Read more
The curly braces mean concatenation, from most significant bit (MSB) on the left down to the least significant bit (LSB) on the right. You are creating a 32-bit bus (result) whose 16 most significant bits consist of 16 copies of bit 15 (the MSB) of the a bus, and whose 16 least significant bits consist … Read more
From a similar question we have: Base 2: Twos complement 4 integer, 4 bit fractional -2^3 2^2 2^1 2^0 . 2^-1 2^-2 2^-3 2^-4 -8 4 2 1 . 0.5 0.25 0.125 0.0625 With only 4 fractional bits the represented number only has an accuracy of 0.0625 3.575 could be 11.1001 = 2+ 1+ 0.5 … Read more
You are correct that you should use $readmemh inside an initial block. In order to make it so different instances of the module can have different initialization files, you should use a parameter like so: parameter MEM_INIT_FILE = “”; … initial begin if (MEM_INIT_FILE != “”) begin $readmemh(MEM_INIT_FILE, ram); end end The format is described … Read more
It is called procedural continuous assignment. It is the use of an assign or force (and their corresponding counterparts deassign and release) within procedural block. A new continuous assignment process is created when the line is reached in the procedural block. assign can be applied to register types such as reg, integer, and real. force … Read more
Testbench 101 Create a new module (tb). Create a reg for each input of your DUT. Create a wire for each output of your DUT. Create an instance of your DUT. Connect your regs and wires to your DUT. Generate a clock Drive your other inputs Create checkers for your outputs (I’ll leave this up … Read more
Wire:- Wires are used for connecting different elements. They can be treated as physical wires. They can be read or assigned. No values get stored in them. They need to be driven by either continuous assign statement or from a port of a module. Reg:- Contrary to their name, regs don’t necessarily correspond to physical … Read more
The question does not fully cover what is understood about fixed-point numbers, therefore will cover a little background which might not be relevant to the OP. The decimal weighting of unsigned binary (base 2) numbers, 4bit for the example follows this rule: 2^3 2^2 2^1 2^0 (Base 2) 8 4 2 1 Just for reference … Read more
A latch is inferred within a combinatorial block where the net is not assigned to a known value. Assign a net to itself will still infer a latch. Latches can also be inferred by missing signals form a sensitivity list and feedback loops. The proper way of inferring a intended latch in Verilog/SystemVerilog are: /* … Read more