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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YDRjtmAiNpo5mK5N3d7QwZ
2026-10-12 07:55:22 +02:00

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Markdown

---
title: Sony Hit-Bit G900F
categories:
- Computers
types:
- Home Computer
origins:
- Japan
years:
- '1985'
cpus:
- Zilog Z80A
params:
name: Hit-Bit G900F
company: /companies/sony
company_name: Sony
specs:
- label: NAME
value: Hit-Bit G900F
- label: MANUFACTURER
value: Sony
- label: TYPE
value: Home Computer
- label: ORIGIN
value: Japan
- label: YEAR
value: '1985'
- label: BUILT IN LANGUAGE
value: MSX Basic 2.0 (with extended instruction set)
- label: KEYBOARD
value: Full-stroke keyboard including 5 function keys, numeric keypad and 4 arrow keys
- label: CPU
value: Zilog Z80A
- label: SPEED
value: 3.58 MHz
- label: CO-PROCESSOR
value: 'Video Display Processor : V9938 (MSX-VIDEO)'
- label: RAM
value: 64 KB
- label: VRAM
value: 128 KB
- label: ROM
value: 94 KB
- label: TEXT MODES
value: 40 x 24 / 32 x 24
- label: GRAPHIC MODES
value: 64 x 48 / 256 x 192 / 256 x 212 / 512 x 212
- label: COLORS
value: '512'
- label: SOUND
value: 3 channels, 8 octaves
- label: I/O PORTS
value: 2 joystick sockets, 2 cartridge slots, Tape (1200/2400 baud), RGB (scart), Composite Video, Centronics, RS-232 serial port, Audio in/out, Video In connector for VideoTizer (HBI-G 900)
- label: BUILT IN MEDIA
value: 3.5'' disk unit (720 KB double side, double density)
- label: OS
value: MSX Basic 2.0 (with extended instruction set)
- label: PRICE
value: |-
HB-G900F : 10.600FF\
HBI-G900 Videotizer : 8.000FF\
Multiteloper : 5.000FF
tabs:
- photos
- emulators
- links
photos:
- title: REAR
subtitle: ''
text: ''
image: null
- title: INSIDE
subtitle: ''
text: ''
image: null
emulators:
- title: BlueMSX
url: http://www.bluemsx.com/
platform: Windows
text: Excellent free MSX emulator
- title: fMSX32
url: HTTP://WWW.RETRODEV.INFO/
platform: Other platform
text: The excellent fMSX, but ported onto the GamePark GP32 handheld console.
- title: openMSX - The MSX emulator that aims for perfection.
url: http://openmsx.sourceforge.net/
platform: Multiplatform
text: This new MSX emulator can reproduce, among many other MSX, MSX2and MSX2+ machines, both Panasonic Turbo-R models. Be sure to get the catapult frontend and the system roms from FUNET.
links:
- title: MSX Faq
url: http://www.faq.msxnet.org
text: Here, you can find near all hardware pieces related to MSX.
related:
- /museum/canon-v-25
- /museum/jvc-hc-95
- /museum/kawai-kmc-5000
- /museum/msx-2
- /museum/panasonic-fs-a1
- /museum/panasonic-fs-a1f
- /museum/sony-hit-bit-f1xd
- /museum/sony-hit-bit-f500
- /museum/sony-hit-bit-f700
- /museum/sony-hit-bit-f9
oc_id: 790
source:
url: https://web.archive.org/web/20230603120324/http://www.old-computers.com/museum/computer.asp?c=790
date: '2023-06-03'
---
The HB-G 900F was a special [MSX2 model](/museum/msx-2/) aimed at the professional market. It has built in features to pilot Genlock (for video capture) and laserdisks.
The case and keyboard of the HB-G900 is pretty similar to the one of the [HB-500](/museum/sony-hit-bit-f500/) and [HB-700](/museum/sony-hit-bit-f700/). The main differences are the extra video connectors and the built-in RS-232 port. The second cartridge slot found on the HB-500 and HB-700 is replaced by the diskdrive and a second bay remains available for another diskdrive. The second cartridge slot can be found at the back of the unit.
The extended ROM (94 KB total) is holding the BASIC instructions to pilot the Genlock (HBI-G900), RS-232 and laserdisks.
The HBI-G900 (Videotizer) unit sold separately was used to capture external pictureq through a PAL encoder and evenually mix it with pictures generated by the computer.
A special version of the software Multiteloper was developped to take advantage of the special features of this computer. The price of the software and the hardware was strictly limiting them to video edition professionals.
The HB-G900F was later replaced by more advanced models such as the HB-F900 and HB-G900AP.
The coolest thing is that one of these systems could be found in the MIR space station, apparently used for video capture. Pictures and videos showing the HB-G900 and HBI-G900 in the space station, can be found on this [site](http://msx.gnu-linux.net/msx-in-space/).
Pictures and info from Olivier Hustin.