Pioneer PX-7

The Pioneer PX-7 was an MSX1 computer designed to integrate with Pioneer LaserDisc players. Its P-BASIC extensions allowed programs to control disc playback and combine computer graphics with analogue video.

It was a pioneering interactive multimedia platform used for entertainment, education and presentations years before optical multimedia PCs became common.

Notable Features

• LaserDisc control through Pioneer ER port
• P-BASIC commands for interactive video
• Genlock-style combination of MSX graphics and LaserDisc pictures

Historical Significance

• It was a pioneering interactive multimedia platform used for entertainment, education and presentations years before optical multimedia PCs became common.

Collector’s Notes

• The matching LaserDisc player, control cable and compatible software discs are central to demonstrating its intended use.
• Memory, storage, displays and expansion hardware should be documented because configurations often changed during a system’s working life.

Specifications

Technical Information
Name	Pioneer PX-7
Manufacturer	Pioneer
Launched	Saturday, January 1, 1983
Launch Price	¥89,800
Country	Japan
CPU	Zilog Z80A compatible
Units Sold
Form Factor	Keyboard console
Power	Internal or external mains supply
Networking	None built in
Operating System	MSX BASIC; MSX-DOS on disk-equipped models
Expansion / I/O	Cartridge, cassette, joystick, printer and video connections
Keyboard	Integrated keyboard
Storage	Cartridge, cassette and LaserDisc
Sound	AY-3-8910-compatible three-voice PSG plus noise
Colours	16 on MSX1; expanded palette on MSX2/2+
Graphics	TMS9918A 256 x 192 pixel graphics
Display	Television or monitor
ROM	MSX BIOS and BASIC plus model firmware
RAM	32 KB main RAM and 16 KB video RAM
CPU Speed	3.58 MHz