gasim #

A cross-platform simulator for the GreenArrays, Inc. GA144 multi-computer chip.

Usage #

gasim examples/hello.node

Currently, this just launches the simulator with node 001's RAM and ROM loaded with the contents of the provided binary file.

The expected file format is 288 8-bit bytes, with the first 144 bytes containing the RAM contents and the next 144 bytes containing the ROM.

Download #

Download a static binary for your operating system.

If you have Nix installed, try nix run github:coat/gasim#.

Building #

To build gasim, zig 0.16.0 is required.

zig build -Doptimize=ReleaseFast

gasim will be available in ./zig-out/bin/gasim.

TODO #

• I/O
• ROM implementations

Prior Art #

• GreenArrays' own SOFTSIM available in their free arrayForth distribution. Works well under wine.
• AshleyF/Color - A colorForth editor, assembler and F18 simulator written in F#.
• mschuldt/ga144-sim - GA144 simulator from an alternative toolchain.

References #

• Incredibly informative blog series by AshleyF that introduces the F18 architecture and instruction set.
• GreenArrays' own concise, but very informative documentation on the GA144 chip and F18 architecture.
• colorForth instruction set