The HT-1080Z, HT-2080Z and HT-3080C computers were manufactured by Híradástechnika Szövetkezet in Budapest, Hungary from 1983 to 1986. The HT-1080Z was one of the first official school computers in Hungary.

Initial versions were unaltered VideoGenie I computers relabeled and mounted with an on-board Yamaha/General Instruments AY-3-8910 sound chip. (The EACA VideoGenie I was in turn slightly modified clone of the popular TRS-80 Model 1 with Level II BASIC. The Yamaha chip is the same one that appeared in other famous computer models, such as the Amstrad and the Atari ST.)

Later revisions of HT-1080Z were re-designed by Híradástechnika Szövetkezet to have accented Hungarian characters, modified ROM contents (BASIC extensions) and several peripherals.

The basic properties of the most popular HT-1080Z models are summarized here:

Name HT-1080Z
Manufacturer Híradástechnika Szövetkezet, Budapest, Hungary
Type School computer
Year 1983-1986
Built-in language BASIC (Microsoft 12k Level II BASIC)
Speed 1.77 MHz
Keyboard Full stroke QWERTY keyboard, no extra Hungarian keys
RAM 16kB, later 48kB
ROM 12kB + 1.5kB extension (monitor, Hungarian support)
Text modes 16x32 or 16x64 switchable
Graphic modes 128x48
Colors Monochrome (black and white)
Display External composite video monitor or black&white TV
Sound Built-in AY-3-8910 sound chip (3 channels and noise, 11 octave)
I/O ports 50 pin expansion bus, TV signal, external tape, composite video, 8 bit I/O port (provided by the AY-3-8910)
Built-in storage media Built-in tape recorder with normal compact cassette (500 baud)
Power supply Built-in power supply
Peripherals Printer interface; extension unit with floppy controller and high-resolution graphics controller; external floppy drive
Price 35 400 HUF (in 1984), about 700 USD (note that HUF was not convertible to USD at that time)

HT-1080Z/64 had 48kB RAM and support of accented Hungarian characters.

HT-1080Z (click to enlarge)
HT-1080Z/64 (click to enlarge)

High-resolution graphics and floppy disk interface were available in external units to be connected to the expansion port of the computer.

Extension unit
Floppy disk drive

The HT-2080Z machines had the same specifications as the 1080Z models, but they were positioned as business computers instead of school computers.

HT-2080Z (click to enlarge)

The 3080C model was available in prototype form only. It was designed in response to a call for a tender to prepare the second generation of school computers in Hungary. Its main characteristics were as follows: high resolution graphics (256x192 pixels, 8 colors), RGB output, Centronics interface, function keys, full support of Hungarian accented keys, and emulation of Sinclair ZX Spectrum BASIC programs.

HT-3080C (click to enlarge)

Currently three emulators are available: HT1080Z (by Attila Grósz), Real-80 and Real-80 PRO (by Zoltán Kollár). If you are interested in these machines then please download and try them.

Emulator Download Information



Real-80 PRO Features

BASIC programs are available to dowload here, while SYSTEM (machine language) programs are available here. Note that a large number of programs is available at TRS-80 sites, thus only Hungarian programs (and programs that were wide-spread in Hungarian schools at that time) are stored in this site.


Start-up screen with options
Built-in Z80 monitor


Start-up screen of Real-80

System requirements:
P200 or faster CPU, Windows XP SP2 operating system recommended, on such PC the emulator runs flawlessly.
MS-DOS 6.2 or Windows 98 operation system: VESA compatible video card, sound blaster 2 soundcard.

Emulator features:

Z80 debugger and emulator options in Real-80


Start-up screen of Real-80 PRO

System requirements: P233 or faster CPU, Windows operating system (98, ME, 2000, XP), DirectX 7 or later.

Emulator features:

Z80 debugger and emulator options in Real-80 PRO



This program (written by Attila Grósz) converts standard TRS-80/System-80 disk (CMD) files to tape (CAS) images. Download the program together with source code (GPL license) here: CMD2CAS

Usage: cmd2cas <cmd_file> <cas_file>

At the moment there are no command line options available. Also, for now there are only two CMD block types supported: type 1 and 2. The program should work for most CMD files nevertheless.

The resulting CAS image is a system image, you have to load it by typing the command SYSTEM followed by the name of the program in the CAS image (this is the first 6 letters of the filename). When the prompt is back, you should type / (slash) to start the program as CAS files never autostart by themselves.