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Y > YAMAHA  > SX-100   


The SX-100 is a MSX 1 computer with a minimal but beautiful case design. Contrary to most of other MSX computers, the single cartridge slot can be found on the right side of the unit.

The SX-100 uses a Z80A compatible CPU from Sharp (LH0080A) and a Yamaha YM2220 VDP (Video Display Processor) compatible with the Texas Instruments TMS9918. This YM2220 as only used in the Sakhr AX-150, Victor HC-30 and Yamaha SX-100 MSX computers.

The sound is handled by a Yamaha S3527 MSX-Engine, also called called MSX-SYSTEM made by Yamaha for ASCII & Microsoft. It integrates several features including a Yamaha YM2149 PSG-sound chip, compatible with a the more common General Instrument AY-3-8910 (for sound, joystick ports, etc).

Yamaha also produced a slot expander for this computer, called the SX-101 Expansion box designed to be placed underneath the monitor. It allows to use two standard MSX cartridge slots and includes a special Yamaha Module Slot Connector, for use with for instance the SFG module.

It was sold only in Japan and thus features a Japanese keyboard.

The SX-100 was sold in black (SX-100 DB), white or dark blue. It was also sold in Japan rebranded as the Victor HC-30 in black or red.


Thanks to for most of the info.

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Retrotechq8 , i have one in mint condition

Sunday 27th February 2022
Retrotechq8  (Kuwait)


NAME  SX-100
TYPE  Home Computer
YEAR  1985
KEYBOARD  QWERTY full-stroke keyboard
CPU  Sharp LH0080A (Z80A compatible)
CO-PROCESSOR  Yamaha YM2220 (Texas Instruments TMS9918 compatible), Yamaha S3527
RAM  32 KB
SOUND  PSG (YM2149 integrated in MSX-Engine S3527)
I/O PORTS  RGB video output, RF video output, Composite video output, Audio output, Tape interface, Centronics compatible Parallel port, 2 joystick ports, cartridge slot, power in
POWER SUPPLY  External power supply (9v, 1.3A) - -(o- +
PRICE  ¥36,800 (Japan, 1985)

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Ready prompt
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