Overview - Emulators - Tools


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 the following emulators are available: HT1080Z (by Attila Grósz), Real-80 and Real-80 PRO (by Zoltán Kollár), and FastZ80 (by Lajos Kintli). If you are interested in these machines then please download and try them.

Emulator Download Information



Real-80 PRO Features
FastZ80 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: P200-MMX or faster CPU, Windows operating system (98, ME, 2000, XP).
v2.5 - Faster display emulation without DirectX, now run on P200-MMX CPU at 50 FPS.

Emulator features:

Z80 debugger and emulator options in Real-80 PRO


FastZ80 screen

System requirements: The program runs in standard WIN32 environment (from Windows 95 to the latest Windows releases). The program in standard mode consumes insignificant system resources, however in "full speed" mode it eats up one processor.

Main features:



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.

(Attila Grósz, Zoltán Kollár, Lajos Kintli, István Majzik)