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THE HT-1080Z, HT-2080Z AND HT-3080C COMPUTERS

OVERVIEW

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)
CPU	Z80
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)

EMULATORS

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
HT1080Z	ht1080z_v1.6.4.zip	Features Documentation
Real-80	real-80_v1.2g.zip	Features Documentation
Real-80 PRO	real-80pro_v2.5.5.zip	Features Documentation
FastZ80	fastz80_v102.zip	Features Documentation

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.

HT1080Z EMULATOR FEATURES

Start-up screen with options

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:

very fast and accurate Z80 engine
Z80 undocumented instructions/flag bits are implemented
RESET and NMI support
four running speeds including 'full' for maximum performance
64*16 character video display (including 128*48 pixel graphics)
video cut / page with optional 200% magnifier
8*8 memory mapped 'wired or' keyboard matrix
TRS-80 like 'tape output' sound is supported
General Instruments AY-3-8910 (Yamaha YM2149) sound chip is emulated
tape emulation through CAS files for basic language and system programs
direct load of TRS80 CMD & CAS & Intel Hex files
ROM extension is included (use SYSTEM and /12288 for activating)
ROM includes simple monitor (use SYSTEM and /12710)
content of ROM can be loaded from binary file
character generator ROM can be loaded from bitmap file
keyboard mapping can be loaded from a text file
default settings including ROMs can be patched into the EXE file
built in port controlled timer/event counter
small sized single EXE program, no external files are needed
running on standard WIN32 environment (Windows 95 and up)

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

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.