Mitsubishi ML-TS2
This page was last modified 19:06, 13 April 2019 by Rderooy. Based on work by Gdx and Mars2000you and others.



The ML-TS2 is a very special MSX2 computer, also called the telephone-computer. It has only 64Kb RAM and is without any disk drive. There are 2 versions of this machine : the ML-TS2 is provided without telephone and covers the location reserved for that while the ML-TS2H has this device built-in. Both versions come with a specific slot doubler (EX-Box).

The included firmware of this Telecom Station can be launched with CALL TELECOM or _TELECOM.

Brand Mitsubishi
Type ML-TS2
Year 1987-11
Region Japan
Original price ¥65,000 for the ML-TS2
¥75,000 for the ML-TS2H
¥10,000 for the ML-TS2 to ML-TS2H kit (ML-HS)
RAM 64kB in slot 3-2
VRAM 128kB
Media MSX cartridges
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S1985)
Chipset Yamaha S1985
Extras Telecom firmware, Modem, MSX-Modem BASIC, Kanji-ROM level 1 & 2, slot doubler, (only on ML-TS2H) dedicated telephone


Mitsubishi ML-TS2
Mitsubishi ML-TS2(H) Back
Mitsubishi ML-TS2 PCB
Mitsubishi ML-TS2H box and content
Mitsubishi ML-TS2H label
Mitsubishi ML-TS2H
Mitsubishi ML-TS2(H) Slot doubler
Mitsubishi ML-TS2(H) Slot doubler inserted in cartridge slot
Mitsubishi ML-TS2 label


The ML-TS2 is a MSX2 with one or two cartridge slots, a Z80A from NEC (D780C-1) and an MSX-Engine S1985 from Yamaha. The modem speed is 300/1200bps. The keypad is made up of ten numbers and a RET key only. It is intended to dial a phone number.

Power supply adapter specifications:

  • Input: 100V, 14VA
  • Output: AC 8V, 1.2A and +8.5V, 0.1A

Slot Map

Slot 0 Slot 1 Slot 2 Slot 3-0 Slot 3-1 Slot 3-2 Slot 3-3
Page C000h~FFFFh


Page 8000h~BFFFh RAM
Page 4000h~7FFFh Main-ROM Network* RAM
Page 0000h~3FFFh Main-ROM Sub-ROM RAM Modem

(*) The 64kB firmware rom is in slot 3-1, it has a complex mapper and is composed of 4 blocks of 16kB.