HardMPU: An intelligent MPU-401 compatible MIDI interface based on an Atmega microcontroller and SoftMPU software. Features: - IRQ driven intelligent mode compatible - UART mode compatible - SysEx delay for Roland MT-32 on faster computers - "Fake all notes off" for Roland RA-50 - JTAG, ISP, and UART interfaces for user expansion Limitations: - Playback only, recording planned but not yet implemented - Requires an ISA slot in your computer This software is covered by the GPL. The circuit design is free for non-commercial use.