Mitsubishi ML-G3
This page was last modified 13:37, 17 December 2021 by Mars2000you. Based on work by Gdx and Rderooy and others.



The ML-G3 is the adaptation of the ML-G30 Model 2 computer for the Spanish market, but limited to 64kB RAM and 1 disk drive by default (however, there's a location foreseen for the addition of a second disk drive). There is no external disk drive connector.

The separate keyboard has its own dedicated connector. As in Model 2 of ML-G30, there's a RS-232C interface with a switch at the back of the computer and its own ROM.

Brand Mitsubishi
Model ML-G3
Year 1986
Region Spain
Launch price
RAM 64kB in slot 3-2
VRAM 128kB
Media MSX cartridges, 2DD floppy disks
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S3527)
Chipset Yamaha S3527
Keyboard layout QWERTY with "ñ " and accents keys + numeric keypad
Extras 1 or 2 720kB 3,5" floppy disk drives, third cartridge slot, RS-232C interface + switch + RS-232C BASIC, sold with disk Melbrains Note (Word Processor + Calc + Graphic Editor + Communication Program)
Emulation ROMs dumped and machine emulated


Mitsubishi ML-G3
Mitsubishi ML-G3 right side
Mitsubishi ML-G3 back
Mitsubishi ML-G3 internal cartridge slots


The ML-G3 is a MSX2 with 4 cartridge slots (1 external in front and 3 internal in back), a Z80A from NEC (D780C-1) and an MSX-Engine S3527 from Yamaha.

About the 3 internal slots:

  • The RS-232C card is located at back side top slot number 3.3.
  • The back side slot at the middle corresponds to slot 3.1.
  • The lowest back slot is slot 2.

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh Cartridge
Slot 1
back slot
back slot
Page 8000h~BFFFh
Page 4000h~7FFFh Main-ROM Disk-ROM RS-232C
Page 0000h~3FFFh Sub-ROM
  • The RS-232C ROM is a 8KB ROM - 4000h-5FFFh (is mirrored from 6000h-7FFFh)