Toshiba HX-20AR
This page was last modified 23:29, 24 August 2023 by Mars2000you. Based on work by Gdx and Rderooy.




The Toshiba HX-20AR is the adaptation for Argentina of the HX-20, it was imported in Argentina by the Arvoc company as official representative of Toshiba - see HX-20 series for the technical details

The PSG sound is mono instead of stereo.

An RS-232C interface as like that of the HX-20 can probably be added if you replace the IC3 ROM by the one from the HX-22CH, HX-22GB or HX-22I in the same way as for the HX-20E.

Note: The computer cardboard box is a generic HX-20 "universal" one. One side of the box shows the Toshiba HX-20 computer and the other side shows the pic of a Toshiba HX-22.


A menu proposing the firmware is launched when you start the computer, but you can skip it if you press ESC key while booting.

This firmware includes the additional BASIC instructions for Memory Disk.

Compared to the HX-20:

  • the RS-232C features have been removed
  • the extra MSX-BASIC instructions for the printer are not implemented
  • the Japanese Word Processor has been replaced by an English Word Processor



Toshiba HX-20AR box and content
Toshiba HX-20AR box and computer
Toshiba HX-20AR
Toshiba HX-20AR label


Toshiba Intro screen
Toshiba Main menu
Toshiba EWP
Variables Sub-Menu
Screen Variables
Printing Variables

External Links