Fujitsu FM77AV40SX

The Fujitsu FM77AV40SX was the final and most advanced member of the FM77AV family. It expanded the colour palette to approximately 260,000 colours, retained dual 640KB drives and included video digitisation facilities.

Arriving as Fujitsu prepared the 32-bit FM Towns, the SX represented the peak of the company’s 6809-based architecture. It preserved compatibility while extracting striking audio-visual performance from an 8-bit design.

Notable Features

• Expanded the palette to roughly 260,000 colours.
• Included video digitisation and dual 640KB floppy drives.

Historical Significance

• The technical culmination of Fujitsu’s FM-7/FM-77 6809 architecture.
• Released only months before the radically different FM Towns.

Collector’s Notes

• It is one of the scarcer and most desirable FM77AV variants.
• Correct displays, digitiser accessories and software are largely confined to Japan.

Specifications

Technical Information
Name	Fujitsu FM77AV40SX
Manufacturer	Fujitsu
Launched	Tuesday, November 1, 1988
Country	Japan
CPU	Motorola 68B09E with Motorola 68B09 display processor
Units Sold
Operating System	F-BASIC and disk operating software
I/O	Joystick, printer, serial, expansion, RGB, video and audio interfaces
Keyboard	Separate keyboard
Storage	Two built-in 3.5-inch 640KB floppy drives
Sound	PSG plus FM synthesis
Graphics	320x200 in up to 260,000 colours or two 4,096-colour screens; 640x400 modes
Display	RGB monitor
ROM	F-BASIC and Japanese character firmware
RAM	192KB to 448KB main RAM; 192KB video RAM
CPU Speed	Approximately 2 MHz