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Description
The HB-G900P is the adaptation of the HB-F900 for the European market. This computer supports superimposition with genlock.
The special video I/F connector on the back can be used to connect the Sony HBI-G900P Videotizer, which enables you to actually record the superimposed video and can also perform digitization. Both devices were used in the Mir space station.
In addition a second internal disk drive could be added in the form of the HBD-G900.
It has a built in Video Utility ROM: Laser Disc control (using the RS-232C interface) and an MSX-BASIC extension to show large texts on the screen (useful with superimposing). Note that SonyLDP BASIC is not compatible with the Pioneer P-BASIC.
This model was a special computer aimed at the professional market. The keyboard is separate from the main unit. This model is only available in white color. The keyboard reference is KBD-12P.
Comes with a single disk (please see the manual): MSX-DOS/Character Font System and Font Disk.
Included manuals: Operating Instructions, A Guide to MSX-BASIC version 2.0, MSX-BASIC Version 2.0 Programming Reference Manual, Reference Chart, Video Utility, A Guide to RS-232C Communication.
The HB-G900P was later replaced by the more advanced model HB-G900AP.
| Brand | Sony |
| Model | HB-G900P |
| Year | 1986 |
| Region | Europe |
| Launch 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 | QWERTY wih a "£" key + numeric keypad |
| Extras | One or two 720kB 3.5" floppy disk drives, superimposition capacity, reset button, RS-232C interface, software |
| Emulation | ROMs dumped and emulated except for the superimpose and genlock functions, SonyLDP BASIC |
Pictures
Specifications
The HB-G900P is a MSX2 with a Z80A from Sharp (LH0080A) and without MSX-Engine. The floppy disk controller chip is the CXD-1032Q (Sony).
The architecture is with standard components. The RAM is 64 kb in primary slot 3. The rs232 has an 2kb Sram for buffer and variables.(See service manual)
The optional AV creator HBI-900 interface has been replaced by the Videotizer (HBI-G900), a simplified interface to digitize images and do superimposing for the European market.
Slot Map
| Slot 0-0 | Slot 0-1 | Slot 0-2 | Slot 0-3 | Slot 1 | Slot 2 | Slot 3 | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Page C000h~FFFFh | Cartridge Slot 1 | Cartridge Slot 2 | 64kB plain RAM | |||||||
| Page 8000h~BFFFh | ||||||||||
| Page 4000h~7FFFh | Main-ROM | Disk-ROM | RS-232 | Firmware | ||||||
| Page 0000h~3FFFh | Sub-ROM |
Connections
- RGB output (scart)
- Analog sound output/input
- RS-232C connector (DB-25) with switch for terminal/modem operation
- Data Recorder connector
- Centronics compatible Parallel port for a printer
- 2 general connectors (Joysticks, Mouse, Paddle controlers, etc)
- Keyboard connector
- 2 cartridge slots
- Video I/F connector
