This page was last modified 16:09, 17 November 2016 by Rderooy. Based on work by Mars2000you and Gdx and others.



The HB-F1XDJ is a computer released on the Japanese market by Sony. This model was later replaced by the HB-F1XV with a few minor changes.

The hardware PAUSE button, the Speed-Controller (slow-motion) and the REN-SHA-TURBO (auto-fire for both joysticks and spacebar) are nice features for playing games.

The HB-F1XDJ was sold with two floppy disks containing Graphic and game programming tools. The Graphics Editor is the same as the one from the HB-F900 but lacks some features. A Japanese Word Processor can be used, but you need the corresponding disk from the HB-F1XV.

Official price: ¥69,800

Brand Sony
Year 1988
RAM 64kB
VRAM 128kB
Media MSX cartridges, 720kB 3,5" floppy disks
Video Yamaha V9958
Audio PSG (YM2149 integrated in MSX-Engine), MSX-MUSIC (YM2413)
Chipset Yamaha S1985
Extras 256kB Kanji-ROM JIS level 1 & 2, MSX-JE, speed controller, Ren-Sha Turbo (autofire), hardware pause key, 2DD floppy disk drive, Programming tools on disk, Kanji BASIC


Sony HB-F1XDJ rear
Sony HB-F1XDJ rightside
Sony HB-F1XDJ mainboard
Sony HB-F1XDJ mainboard back
Sony HB-F1XDJ box
Sony HB-F1XDJ accessories


The HB-F1XDJ is a MSX2+ with 2 cartridge slots (one at the top, one at the back). The CPU is a Z80A from Zilog (Z0840004SPC) and the MSX-Engine is the S1985.

The HB-F1XDJ was not planned to expand the Main RAM internally but it is possible by replacing RAM by a small PCB. (See below)


  • RF output
  • RGB output
  • Analog sound & Composite video
  • Tape recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (joysticks, mouse, paddle controllers, ...)
  • 2 cartridge slots

Repair / Expand

  • The floppy disk drive belt is the main failure cause. The belt becomes too soft over time. It has the following specifications.

Diameter: 59mm (lenght: 186mm)
Width: 2.8mm
Thickness: 0.4mm