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T > TOSHIBA  > HX-20 / HX-21 / Pasopia IQ   

HX-20 / HX-21 / Pasopia IQ

This is a classic MSX 1 computer, quite similar to the HX-10, except that the shape is different and there are two cartridge slots.

Its special feature seems to be a primitive word processor software built-in ROM. You need a separate Kanji ROM cartridge for it to work.

Does someone know the other differences?

In its native country (Japan), the HX-20 was also named Pasopia IQ to fit in the Pasopia family developped by Toshiba.

There was also a HX-21 computer. It had some minor design changes: like red line - instead of green - below brand and model names. But the main difference seems to be a RGB video output for the HX-21.

We need more info about this computer ! If you designed, used, or have more info about this system, please send us pictures or anything you might find useful.
NAME  HX-20 / HX-21 / Pasopia IQ
TYPE  Home Computer
YEAR  1984
BUILT IN LANGUAGE  Microsoft Extended Basic (MSX Basic V1.0)
KEYBOARD  QWERTY mechanical keyboard with 4 function keys, and arrow keys.
SPEED  3,6 Mhz
CO-PROCESSOR  Video Display Processor TMS 9929A
RAM  64 kb
VRAM  16 kb
ROM  32 kb
TEXT MODES  Mode 0 : 40 x 24
Mode 1 : 32 x 24
GRAPHIC MODES  Mode 2 : 256 x 192 with 16 colors (Hires mode)
Mode 3 : 64 x 48 with 16 colors (Multi colour mode)
32 sprites
SOUND  General Instruments AY-3-8910 Programmable Sound Generator
3 channels, 8 octaves
SIZE / WEIGHT  370 x 245 x 60 mm / 2,8 kg
I/O PORTS  2 joystick sockets, 2 cardridge slots, Tape-recorder connector (1200/2400 bauds), Composite video output, Centronics interface, RF video output, Expansion bus, Stereo audio output
HX-21 : RGB analog video output
POWER SUPPLY  Power supply built-in
PRICE  Unknown

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