Sony HB-G900D
This page was last modified 15:54, 21 May 2021 by Mars2000you. Based on work by Rderooy and Gdx and others.



The HB-G900D is the adaptation simplified of the HB-F900 for the German market. This computer supports superimposing with genlock via a special video I/F connector on the back.

This model was a special computer aimed at the professional market. The keyboard is separate of unit. This model is only available in white color.

It included a mouse and a special version of the software Multi-Teloper (Q-Manager & Graphics Editor) on floppy disk.

The HB-G900D was later replaced by a more advanced model such as the HB-G900AP with a QWERTZ keyboard.

Brand Sony
Type HB-G900D
Year 1986
Region Germany
Original price
RAM 64kB in slot 3
VRAM 128kB
Media MSX cartridges, 2DD floppy disks
Video Yamaha V9938
Audio PSG (AY-3-8910)
Chipset none (separate IC's)
Keyboard layout QWERTZ
Extras One or two 720kB 3.5" floppy disk drives, superimposition capacity, reset button, software, SonyLDP BASIC
Emulation ROM dump needed. See this thread for details


Sony HB-G900D front
Sony HB-G900D keyboard
Sony HB-G900D box
Sony HB-G900D rear


The HB-G900D is a MSX2 with a Z80A from Sharp (LH0080A) and without MSX-Engine.

The architecture is standard components. The RAM is 64 kb in primary slot 3.(See service manual Part1 and See service manual Part2)

The optional AV creator HBI-900 interface has been replaced by the Videotizer (HBI-G900), a simplified interface to digitize images and do superimposing for the European market.