Sanyo MPC-2300
This page was last modified 10:01, 22 April 2019 by Mars2000you. Based on work by Rderooy and Gdx.



The Sanyo MPC-2300 is the adaptation of the PHC-23J computer, also known as the Wavy 23, for the Soviet Union. It was not sold in shops and could only be used in some schools or administrations.

This computer has a Russian keyboard and a non-standard modem with switch (CALL COMINI does not work). It was used in network with the MPC-2500FD.

From MSX-BASIC, the terminal software can be launched with CALL INIT or _INIT.

Brand Sanyo
Type MPC-2300
Year 1985
Region USSR
Original price
RAM 128kB (? in slot 3-2)
VRAM 128kB
Media MSX cartridges
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Extras non-standard modem + switch + terminal software


Sanyo MPC-2300
Sanyo MPC-2300 underside
Sanyo MPC-2300 inside
Sanyo MPC-2300 back
Sanyo MPC-2300 right side


The MPC-2300 is a MSX2 with a Z80A from NEC (D780C-1) and an MSX-Engine S3527 from Yamaha.

Slot Map

Help needed
The below slot-map is an assumption, it needs to be checked on a real machine.
Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh Cartridge
Slot 1
Slot 2
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM Firmware
Page 0000h~3FFFh Sub-ROM
  • The Firmware ROM is a 8kB ROM - 4000h-5FFFh


  • RGB output
  • Analog sound & Composite video
  • Tape recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (joysticks, mouse, paddle controllers, ...)
  • 2 cartridge slots
  • 1 serial port connector