Sony HB-F1XV
This page was last modified 11:48, 26 September 2022 by Mars2000you. Based on work by Gdx and Rderooy and others.



The HB-F1XV is a computer released on the Japanese market by Sony. It is the final MSX manufactured and marketed by Sony.

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-F1XV was sold with three floppy disks containing MSX-DOS, Synth Saurus, Graphic tools and a Word Processor. The Graphics Editor is similar to the one shipped with the HB-F900 but has some missing functions.

Brand Sony
Model HB-F1XV
Year 1989-10-21
Region Japan
Launch price ¥69,800
RAM 64kB in slot 3-0
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
Keyboard layout QWERTY/JIS + numeric keypad
Extras MSX-MUSIC BASIC, 256kB Kanji-ROM JIS level 1 & 2, MSX-JE, speed controller, Ren-Sha Turbo (autofire), hardware pause key, 2DD floppy disk drive, Software (MSX-DOS, Synth Saurus, Graphic tools and Word Processor), Kanji BASIC
Emulation ROMs dumped and emulated


Sony HB-F1XV
Sony HB-F1XV rear
Sony HB-F1XV rightside
Sony HB-F1XV mainboard
Sony HB-F1XV mainboard back
Sony HB-F1XV manuals
Sony HB-F1XV disks
Sony HB-F1XV box


The HB-F1XV 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. Floppy Disk Controller chip is the MB89311.

The HB-F1XV was not planned to expand the Main RAM internally but it is possible by replacing RAM by a small PCB. (See below)

Slot Map

Slot Slot
0-0 0-1 0-2 0-3 Slot 1 Slot 2 3-0 3-1 3-2 3-3
Page C000h~FFFFh MSX-JE Cartridge
Slot 1
Slot 2
Page 8000h~BFFFh Kanji
Page 4000h~7FFFh Main-ROM Disk ROM MSX-Music
Page 0000h~3FFFh Sub-ROM


Repair and Modifications

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

The systemboard has a daughterboard called "HIC-1" which contains three SMD electrolytic capacitors which will leak over time and badly damage the board around it. Please see this thread about replacing them.