Sony HB-F750
This page was last modified 15:29, 21 December 2021 by Mars2000you. Based on work by Rderooy and Gdx.



The Sony HB-F750 is a computer that has never been released, and only shown in a few museums and at exhibitions.

It has remained at the prototype level, but it is a proof that like Philips and Toshiba, Sony was a pioneer in introducing the CD-ROM to computers.

It appears based on the HB-F500 and HB-F700, with the addition of a built-in CD-ROM drive. The cartridge slots have been moved at the back of the computer.

It has a QWERTY Japanese keyboard with ANSI layout for kanas characters and half of the keys with kanas in gray. The case is in white color.

Brand Sony
Model HB-F750
Year 1986 (never released)
Region Japan
Launch price unreleased
RAM 256kB in slot 3-3
VRAM 128kB
Media MSX cartridges, DD floppy disks, CD-ROMs
Video Yamaha V9938
Audio PSG (YM2149 integrated in MSX-Engine S1985)
Chipset Yamaha S1985
Keyboard layout QWERTY/JP50on + numeric keypad
Extras CD-ROM drive, 720kB 3.5" floppy disk drive, Kanji-ROM level 1, reset button


Sony HB-F750 (prototype)


The HB-F750 is an MSX2 prototype with a Z80A from NEC (uPD780C-1) and an MSX-Engine from Yamaha (S1985).


  • RGB output (RGB21, not SCART)
  • Analog sound & Composite video
  • Keyboard connector
  • Tape recorder connector
  • Centronics compatible Parallel port for a printer
  • 2 general connectors (joysticks, mouse, paddle controllers, ...)
  • 2 cartridge slots
  • AC power plug