Contents |
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, SonyLDP BASIC |
| Emulation | ROMs dumped and emulated except for the superimpose and genlock functions |
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 RS-232C 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The optional AV creator HBI-900 interface has been replaced by the Videotizer (HBI-G900), a simplified interface to digitize images and do superimposing for the European market.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-232C | 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
