MPU(4) BSD Programmer's Manual MPU(4)
mpu - Roland/Yamaha MPU401 (and compatible) MIDI UART driver
mpu* at isa? port 0x300 mpu* at isapnp? midi* at mpu?
The mpu driver provides support for the Roland/Yamaha MPU401 (and compa- tible) MIDI UART cards. Access to the device is through the MIDI driver.
isa(4), midi(4)
The mpu device driver appeared in OpenBSD 2.6. MirBSD #10-current August 18, 1998 1