I have the main unit, original box, joystick
and Irradio tape player.
type computers
country Japan
year 1984
os MS eXtended basic (MSX)
cpu Z80
speed 3.5 MHz
ram 64 KB
rom 48 KB
graphic 256 x 192
colors 15
sound 3 channels
ports two joysticks, RF, audio/video, printer, tape, two cartridge, expansion bus
The Toshiba HX-20 — Toshiba’s Enhanced MSX
The Toshiba HX-20 was a second model in Toshiba’s MSX range, offering improvements over the HX-10 including expanded RAM and enhanced features. As Toshiba refined its MSX product line throughout the early 1980s, the HX-20 represented the company’s ongoing commitment to the standard while incorporating hardware refinements that improved the user experience. The machine maintained full MSX software compatibility while providing a more capable platform for the growing range of MSX games and applications that Japanese software publishers were developing.
Toshiba’s MSX Commitment
Toshiba’s sustained involvement in the MSX market through multiple product generations demonstrated the company’s confidence in the standard’s commercial viability. Each successive Toshiba MSX model incorporated improvements in build quality and specifications while maintaining the compatibility that made the MSX ecosystem valuable. This commitment to incremental refinement rather than radical change reflected Toshiba’s engineering philosophy — steady improvement rather than revolutionary redesign.