Toshiba Pasopia IQ

The HX-10[3] was released in the fall of 1983.[4] There is only one ROM cartridge slot, but there's an optional expansion slot available. Several models exist (D, DP, DPN, F, E and S), targeting different markets. For example, the HX-10DPN is equipped with an RGB 21-pin terminal, but other connections (RF, composite video) are non existing; the HX-10S only has 16KB of RAM.

The HX-20[5] was released in the fall of 1984 is equipped with 64KB of RAM.[6] It has a monaural / stereo sound selector switch. Like with the HX-10 series, several models exist (HX-21, HX-22, HX-23). The later models have a RGB 21-pin video output. The HX-23 is compatible with the MSX2 and comes with 64KB of VRAM. The HX-23F is equipped with a RS-232 interface and comes with 128KB of VRAM.

The HX-30 was MSX compatible and released in 1985, with 16KB of RAM,[7] with latter models coming with 64KB, a RGB 21-pin video output and Programmable sound generator stereo output. The HX-33[8] model has 128kB of VRAM and was MSX2 compatible with integrated keyboard. The next model, HX-34,[9] added a floppy disk drive.

Toshiba HX-10

Toshiba HX-20 computer

Pasopia IQ HX-21

The following table present a condensed model list of the MSX compatible computers released by Toshiba.[2]

• Toshiba Pasopia
• Toshiba Pasopia 5
• Toshiba Pasopia 7
• Toshiba Pasopia 16