Hitachi MB-H70
This page was last modified 16:54, 3 November 2021 by Mars2000you. Based on work by Rderooy and Gdx.



The MB-H70 computer is very similar to the Mitsubishi ML-G30 Model 2 machine : 2 drives, separate keyboard, but the RS-232C interface with switch and some connectors (external disk drive, expansion unit) have been removed.

The keyboard is the same as for the Mitsubishi ML-G3, ML-G30 Model 1 and ML-G30 Model 2.

Brand Hitachi (Manufacturer: Mitsubishi)
Model MB-H70
Year 1986
Region Japan
Launch price ¥138,000
RAM 128kB (? 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/JIS + numeric keypad
Extras 2 720kB 3,5" floppy disk drives, third cartridge slot, reset button, Kanji-ROM level 1
Emulation ROM dump needed. See this thread for details


Hitachi MB-H70
Hitachi MB-H70 PCB
Hitachi MB-H70 inside
Hitachi MB-H70 box
Hitachi MB-H70 back
Hitachi MB-H70 right side
Hitachi MB-H70 reset button
MB-H70 manuals (3 first manuals)
Hitachi MB-H70 label


The MB-H70 is a MSX2 with three cartridge slots (1 external in front and 2 internal in back), a Z80A from NEC (D780C-1) and an MSX-Engine S3527 from Yamaha.