xum1541

A native Rust implementation of the xum1541 (ZoomFloppy) protocol for communicating with Commodore disk drives.

Overview

This project reimplements OpenCBM's xum1541 plugin natively in Rust, offering several key improvements:

• Native Rust implementation for better integration with Rust applications
• Consistent, ergonomic API design with proper error handling
• Enhanced stability compared to OpenCBM's C implementation, particularly on Linux systems
• Type-safe interfaces and modern Rust idioms

Features

• Direct communication with Commodore disk drives via xum1541/ZoomFloppy devices
• Native Rust error handling and type safety
• Clean API design following Rust best practices
• Improved stability and reliability over C FFI implementations
• Safe resource management through RAII - USB device resources are automatically closed when objects go out of scope
• Thread-safe design supporting concurrent access and async/futures through standard Rust concurrency primitives (Arc<Mutex<>>)

Note, this is not a drop-in replacement for the OpenCBM plugin - it will not work with the OpenCBM library and applications.

Installation

cargo add xum1541

Usage

use xum1541::{BusBuilder, DeviceChannel, Error};

fn main() -> Result<(), Error> {
    // Connect to the XUM1541 device via USB
    let mut bus = BusBuilder::new().build()?;

    // Initialize the bus
    bus.initialize()?;

    // Reset the IEC
    bus.reset()?;

    // Instuct device 8 to talk using channel 15
    bus.talk(DeviceChannel::new(8, 15)?)?;

    // Read up to 256 bytes of data from the drive
    let mut data = vec![0u8; 256];
    bus.read(&mut data)?;

    // Print it out (this should be the drive status)
    println!(
        "Retrieved data from drive: {}",
        std::str::from_utf8(&data).unwrap()
    );

    // Tell the drive to stop talking
    bus.untalk()?;

    // No need to close the XUM1541 device, it will be closed when bus goes
    // out of scope

    Ok(())
}

Requirements

• Rust 1.70 or higher
• USB device access permissions (Linux systems may need udev rules)
• Compatible xum1541/ZoomFloppy hardware

Building from Source

1. Clone the repository:

git clone https://github.com/piersfinlayson/xum1541.git
cd xum1541

2. Build the project:

cargo build --release

Testing

Run the test suite:

cargo test

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

GPLv3

Acknowledgments

• Original OpenCBM project and xum1541 plugin developers
• ZoomFloppy hardware developers
• Commodore community

Project Status

This project is under active development. Please report any issues or feature requests through GitHub issues.