Sanyo Wavy 23

The Sanyo Wavy 23 was a compact MSX2 computer with V9938 graphics, substantial RAM and a built-in 3.5-inch floppy drive.

It brought disk-based MSX2 productivity and games into Sanyo’s Wavy consumer line.

Notable Features

• Built-in floppy drive
• MSX2 graphics
• Compact integrated enclosure

Historical Significance

• It brought disk-based MSX2 productivity and games into Sanyo’s Wavy consumer line.

Collector’s Notes

• The floppy belt and drive mechanism need routine service, while Japanese firmware and keyboard legends should be preserved.
• Memory, storage, displays and expansion hardware should be documented because configurations often changed during a system’s working life.

Specifications

Technical Information
Name	Sanyo Wavy 23
Manufacturer	Sanyo
Launched	Wednesday, January 1, 1986
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	Built-in 720 KB 3.5-inch floppy drive
Sound	AY-3-8910-compatible three-voice PSG plus noise
Colours	16 on MSX1; expanded palette on MSX2/2+
Graphics	Yamaha V9938 MSX2 graphics
Display	Television or monitor
ROM	MSX BIOS and BASIC plus model firmware
RAM	64 KB main RAM and 128 KB video RAM
CPU Speed	3.58 MHz