llhd-sim 0.3.0

The reference simulator for Low Level Hardware Description assembly.
llhd-sim-0.3.0 is not a library.


Build Status Crates.io

This is the reference simulator for llhd, striving to be complete but as minimal as possible. Its goal is to serve as a starting point for developing more sophisticated simulators for hardware written in llhd. As a secondary goal it acts as an application example of llhd.



You need a working Rust installation. Use cargo to install llhd-sim:

cargo install llhd-sim


Given the following input file:

// foo.llhd
proc @foo () (i32$ %out) {
    drv %out 0 1ns
    drv %out 42 2ns
    %0 = add i32 9000 1
    drv %out %0 3ns

Use llhd-sim to simulate the described hardware and produce a VCD file:

llhd-sim foo.llhd
gtkwave /tmp/output.vcd