Mitsubishi ML-TS100
This page was last modified 16:58, 3 November 2021 by Mars2000you. Based on work by Rderooy and Gdx.




The ML-TS100 is a very special MSX2 computer, as it integrates into a single unit the computer, monitor and floppy disk drive. Only the keyboard comes as separate element.

There's also a big internal surprise: the main CPU is not a Z80A, the usual CPU is replaced by a Z180 (HD64180) at 6.144 MHz. Additionally, the built-in intelligent modem "Communication Unit" is connected to the 64180's serial port. However, there's a co-processor, probably a Z80A, with its own 32kB ROM and its own 32kB RAM, exclusively affected to the network handling.

This machine without MSX logo was aimed at the Japanese market.

Brand Mitsubishi
Model ML-TS100
Year 1987
Region Japan
Launch price ¥298,000
RAM 512kB (+ 32kB for co-processor)
VRAM 128kB
Media DD floppy disks
Video Yamaha V9938
Audio PSG (AY-3-8910)
Chipset  ?
Keyboard layout QWERTY/JIS + numeric keypad
Extras Z180 (HD64180) at 6.144 MHz as main CPU, 720kB 3,5" floppy disk drive, modem, probably MSX-Modem BASIC, Kanji-ROM level 1, multitasking Telecom OS
Emulation ROM dump needed. See this thread for details


When booting, you can't access the blue MSX-BASIC screen, as the multitasking Telecom operating system, based on MSX-DOS, is directly launched.


Mitsubishi ML-TS100
Mitsubishi ML-TS100 (on phone card)


The ML-TS100 is a MSX2 with a a Z180 (HD64180) at 6.144 MHz as main CPU, probably a Z80A at 3.58 MHz only for the network handling, and an built-in intelligent modem "Communication Unit" connected to the 64180's serial port.


  • RJ11 modular connector (telephone line)
  • Keyboard connector
  • Serial connector
  • Data Recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (Joysticks, Mice, Paddle controllers, etc)
  • RS-232C (optional?)
  • Extension Bus 60 pins (specific for this station) (optional?)
  • AC power plug (100V)

Note: No cartridge slot! (confirmed by a programmer of the OS for this computer:


Lost Technology