## MMPM/2 Device Driver Reference

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### Real-Time MIDI Subsystem

The real-time MIDI subsystem (RTMIDI) provides real-time processing of MIDI data within the driver itself. The following sections describe how device drivers communicate with RTMIDI:

IDC Interface
Type-A Drivers
Registering a Type-A Driver

Refer to the Multimedia Subsystem Programming Guide (included with the IBM Developer's Toolkit for OS/2) for more information on the real-time MIDI subsystem.