Contents |
Description
Computer
The HX-31 looks identical to the HX-30 with its black case, but it has more RAM and a built-in firmware. It is not possible to add an RS-232C interface. This machine was released for the Japanese market with the "Pasopia IQ" label.
Although it's a MSX1 computer, it can probably use a part of the MSX memory to create a RAM-Disk or Memory Disk (feature generally reserved for MSX2 and higher computers), just like the HX-32.
| Brand | Toshiba |
| Type | HX-31 |
| Year | 1985
region=Japan |
| Region | {{{region}}} |
| Original price | ¥49,800 |
| RAM | 64kB |
| VRAM | 16kB |
| Media | Cartridges |
| Video | ? Toshiba T6950 |
| Audio | PSG (YM2149F) |
| Chipset | ? Toshiba TCX-1012/TCX-1008 |
| Extras | Japanese Word Processor, Printer BASIC, MemoryDisk BASIC |
Firmware
The built-in firmware is probably version 2.3 of the Japanese Word Processor, that is also available on the HX-32. From BASIC, the firmware can be launched with CALL JWP or _JWP. It includes the additional BASIC commands for Memory Disk and printer.
However, you need to have the HX-M200 Kanji ROM Level 1 in one of the cartridge slots.
It is possible to use other Kanji Roms, but if you use the Sony HBI-K16 Kanji ROM Level 1, CALL JWP leads to a I/O device error. To bypass this problem, an addendum to the manual of the Sony cartridge gives the solution:
10 FOR I = &H9080 TO &H9120 : POKE I, &HC9 : NEXT I 20 CALL JWPKAKU
Pictures
Specifications
The HX-31 is a MSX1 computer with 2 cartridge slots (one at the top, one at the back) and a Z80A from Sharp (LH-0080A). The 2 joystick ports are located on the right side of the computer.
Connections
- RF output
- Analog sound & Composite video
- Data Recorder connector
- Centronics compatible Parallel port for a printer
- 2 general connectors (Joysticks, Mouse, Paddle controlers, etc)
- 2 cartridge slots
- Power plug male for main power supply (JIS C 8303 class, AC 100V +/-10% 50/60Hz)