WheatSystem for WheatBox 55A1

This is a C implementation of WheatSystem for the WheatBox 55A1 computer. I hope that a Tractor implementation will supersede this one eventually. However, I need to satisfy my craving to build a cute little computer, so the Tractor version will need to wait. The code in this repo is largely derived from my older wheatsystem-c repo.

Usage

This project has the following system-wide dependencies:

• avr-gcc
• gcc
• Node.js version ^16.4
• TypeScript version ^4.5
• pnpm version ^6.24

To compile the AVR firmware:

make avr

To compile the emulator:

make unix

To set up utility scripts:

1. Install dependencies: pnpm install
2. Compile the scripts: npm run build

To assemble example volumes:

node ./dist/assembleVolumes.js

To run the emulator:

./build/main_unix (volumeFilePath)

The emulator also supports an integration test mode which communicates over a domain socket. Please see wheatsystem-tests for tests to run:

./build/main_unix --integration-test (socketPath)

To flash the firmware:

make flash

To write an example volume to EEPROM:

1. Assemble the example volumes as described earlier.
2. Connect a USB serial cable to your WheatBox 55A1.
3. Power on WheatBox 55A1 while holding the ACTIONS button to activate storage transfer mode.
4. Write the volume: node ./dist/writeEeprom.js (volumeFilePath)

Example Volumes

This repository includes the following example volumes:

• addNumbers provides a minimal example of a system volume. It only contains a wsBoot bytecode app which adds two integers in memory, and does not display the result.
• primes generates prime numbers and displays them using the terminal driver.
• keys waits for the user to press a key, and displays the corresponding key code.
• serial provides example usage of the serial driver. It waits to receive a byte over a serial connection, displays the byte as decimal text, and sends the decimal text back over serial. You can use the script tsSrc/testSerialVolume.ts to test the example volume.
• shell contains the files below:
  • wsShell is an implementation of the standard system shell. It allows multiple applications to display their own windows. To switch between windows, press the system menu key (the home key in the emulator)
  • fileManager allows the user to perform various file operations:
    • Launch applications
    • View file attributes
    • Modify file attributes
    • Rename files
    • Duplicate files
    • Delete files
  • dummy creates a window and displays a message.
  • utils is a library which provides functions to various applications.
• demoApps includes wsShell, fileManager, and utils as defined in the shell volume, and also includes several demo applications:
  • primes generates prime numbers and displays them in a window.
  • calculator performs addition, subtraction, multiplication, and division on floating-point numbers.
  • wheatText is a text editor for multi-line text files.
  • hexEdit allows the user to view and edit binary files.
  • caveJourney is a simple roll-playing game.
  • hangman is a word puzzle game.