Sanyo MPC-11
This page was last modified 18:38, 24 November 2021 by Mars2000you. Based on work by Rderooy and Gdx.



The Sanyo MPC-11, a.k.a Wavy11, is the most ambitious MSX1 computer released by Sanyo with a focus on graphic creation, as it combines superimposing and 2-color digitizing with an integrated lightpen interface.

The machine has a separate keyboard with 88 keys and only one cartridge slot, but there's an expansion bus: it can be used as second cartridge slot with an adapter.

It was sold with

  • a lightpen (Y4AA)
  • a tape with Lightpen Graphics (ライトペングラフィックス) probably on both sides (side B needs to be checked)

Unit size: 408(W)x 86(H)x 351(L)mm
Unit weight: 4.5kg
Keyboard size: 380(W)x 42(H)x 185(L)mm
Keyboard weight: 1.2kg

Sanyo released also the MPC-X, a Graphic Expander Unit which an extra VDP that adds 4 bitmap modes with 16, 4 or 2 colors on a palette of 512, high-resolution, superimposing, still function and zooming and uses lightpen. This expander needs to be connected to the MEB-01 slot expander, itself connected to the expansion bus of the MPC-11.

The MPC-11 is provided with a RGB21 output. It was therefore recommended for correct encoding of drawn and/or superimposed pictures by using the MSI-01 Super Impose Encoder (¥23,000), optionally in combination with the MPC-X, before recording them on video tape.

This computer was officially viewed as Videotex terminal when the Sanyo MPC-CAP1 Captain Unit was also bought and the contract was signed with the Captain company. It got then an additional label MPC-S1, meaning that it was good for this extra using.

Note: The Sanyo MPC-11 can be used with or without the MPC-X Unit as it has itself superimposing and digitizing capacities. However, the MPC-X is required in combination with the MPC-11 if you want to use the computer as Videotex terminal or enjoy the extra features provided by the MPC-X.

Brand Sanyo
Model MPC-11
Year 1984
Region Japan
Launch price ¥99,800
RAM 32kB (? in slot 0)
Media MSX cartridges
Video Texas Instruments TMS9928A
Audio PSG (AY-3-8910)
Chipset none (separate IC's)
Keyboard layout QWERTY/JP50on + numeric keypad
Extras reset button, lightpen interface, superimposer, 2-color digitizer, switches to select video source, buttons to control superimposing, Lightpen Graphics tape, lightpen Y4AA
Emulation ROM dump needed. See this thread for details



Sanyo MPC-11
Sanyo MPC-11 detail
Sanyo MPC-11 with MSI-01
Sanyo MPC-11 front
Sanyo MPC-11 front (open panel)
Sanyo MPC-11 front panel (open)
Sanyo MPC-11 keyboard detail
Sanyo MPC-11 back
Sanyo MPC-11 right side
Sanyo MPC-11 box
Sanyo MPC-11 content of box
Sanyo Y4AA lightpen


Intro screen version 1.1
Help screen
Creation screen
MPC-11 Demo picture


The MPC-11 is a MSX1 equipped with a Z80A from NEC (D780C-1).

The lightpen uses I/O ports 0B8h~0BBh.


External links