MPU-401 - Variants

Variants

Later, Roland would put most of the electronics originally found in the breakout box onto the interface card itself, thus reducing the size of the breakout box. Products released in this manner:

• MPU-IPC: For the IBM PC/IBM XT/IBM AT and compatibles (8 bit ISA). It had a 25-pin female connector for the breakout box, even though only nine pins were used.
• MPU-IPC-T: For the IBM PC/IBM XT/IBM AT and compatibles (8 bit ISA). The MIDI SYNC connector was removed from this Taiwanese-manufactured model, and the previously hardcoded I/O address and IRQ could be set to different values with jumpers.
• MPU-IMC: For the IBM PS/2's Micro Channel Architecture bus. In earlier models both I/O address and IRQ were hardcoded, in later models the IRQ could be set with a jumper. It had a 9-pin female connector for the breakout box.
• S-MPU/AT (Super MPU): For the IBM AT and compatibles (16 bit ISA). It had a Mini-DIN female connector for the breakout box. The MIDI SYNC, TAPE IN, TAPE OUT, METRONOME OUT connectors was removed, but a second MIDI IN connector was added.
• S-MPU-IIAT (Super MPU II): For the IBM or compatible Plug and Play PC's (16 bit ISA). It had a Mini-DIN female connector for the breakout box with two MIDI In connectors and two MIDI Out connectors.

• LAPC-I: For the IBM PC and compatibles. Includes the Roland CM-32L sound source. A breakout box for this card, the MCB-1, was sold separately.

• LAPC-N: For the NEC PC-98. Includes the Roland CM-32L sound source. A breakout box for this card, the MCB-2, was sold separately.

• RAP-10: For the IBM AT and compatibles (16 bit ISA). General midi sound source only. MPU-401 UART mode only. A breakout box for this card, the MCB-10, was sold separately.

• SCP-55: For the IBM and compatible laptops (PCMCIA). Includes the Roland SC-55 sound source. A breakout box for this card, the MCB-3, was sold separately.

Still later, Roland would get rid of the breakout box completely and put all connectors on the back of the interface card itself. Products released in this manner:

• MPU-APL: For the Apple II series. Single-card combination of the MIF-APL interface and MPU-401, featuring MIDI IN, OUT, and SYNC connectors.
• MPU-401/AT: For IBM AT and compatibles. Includes a connector for Wavetable daughterboards.
• MPU-PC98: For the NEC PC-98.
• MPU-PC98II: For the NEC PC-98.
• S-MPU/PC (Super MPU PC-98): For the NEC PC-98.
• S-MPU/2N (Super MPU II N): For the NEC PC-98.
• SCC-1: For the IBM PC and compatibles. Includes the Roland SC-55 sound source.