TIA-MC-1 ( _ru. ТИА-МЦ-1) — Телевизионный Игровой Автомат Многокадровый Цветной (pronounced "Televizionniy Igrovoi Automat Mnogokadrovyi Tcvetnoi"; meaning "Video Game Machine – Multiframe Colour"), Russian arcade videogame hardware, with replaceable game programs, one of the most famous Soviet Union arcade machines. Developed in Vinnytsia, Ukraine by "Extreme-Ukraine" company in the mid-1980s under the leadership of V.B. Gerasimov. The machine was manufactured by production association "Terminal" and some other factories.


Some of the TIA-MC-1 based games are:
* Автогонки ("Avtogonki", Autoracing)
* Биллиард (Billiard, a pool-like game)
* Звёздный рыцарь ("Zvezdnyi Rytsar", Star Knight)
* Истребитель ("Istrebitel", Fighter Jet, Harrier)
* Конёк-Горбунок ("Konek-Gorbunok", means: The Humpbacked Horse, name of fairy tale by Pyotr Pavlovich Yershov)
* Кот-рыболов ("Kot-Rybolov", Cat the fisher)
* Котигорошко ("Kotigoroshko", title of a Russian fairy tale)
* Остров дракона ("Ostrov Drakona", Dragon Island)
* Остров сокровищ ("Ostrov Sokrovish", Treasure Island by Robert Louis Stevenson)
* Снежная королева ("Snezhnaya koroleva", The Snow Queen by Hans Christian Andersen)
* S.O.S.

Technical specifications

Arcade machine consists of several boards called BEIA (Russian:БЭИА, Блок Элементов Игрового Автомата, "Blok Elementov Igrovogo Automata"). The boards have the following purposes:
* BEIA-100: data processing; RGB DAC; sound generation; coin-op and game controller interface
* BEIA-101: video sync and background generation
* BEIA-102: sprite generation
* BEIA-103: game ROM and main RAM

Games in a TIA-MC-1 arcade machine can be switched by replacing BEIA-103 module, not unlike cartridges in video game consoles.

Main system characteristics are as follows:
* CPU: КР580ВМ80А (clone of Intel 8080), 1.78 MHz
* Video resolution: 256×256, 4 bits per pixel selectable from a palette of 256 colors
** Background: two video pages comprised of 32×32 tiles, each tile is 8×8 pixels. Tile RAM can store 256 separate tiles.
** Sprites: up to 16 simultaneously displayed hardware-generated sprites; total of 256 sprites can be stored in sprite ROM. Sprites can be vertically and horizontally mirrored in hardware.
* Sound: two КР580ВИ53 interval timers (Intel 8253) driving a mono speaker.
* Display: 20” TV screen
* Main RAM — 8KiB.
* Character RAM — 8KiB.
* Video RAM — 2KiB.
* Sprite ROM — 32KiB.
* ROM with game code and background graphics — up to 56KiB.


For a long time TIA-MC-1 hardware remained unemulated due to lack of technical information and ROM dumps. Soon after the Russian emulation community obtained technical documentation and ROM dumps of one of the games, "Konek-Gorbunok", the first emulator named "TIA-MC Emulator" was released on July 27, 2006. A TIA-MC-1 driver was included in MAME on August 21, 2006 (since version 0.108). By now, only two games ("Konek-Gorbunok" and "S.O.S.") are dumped and supported by emulators. An ongoing search for other games is in progress.

See also

List of Soviet computer systems

External links

* [http://www.extrema-ua.com/eng/About_eng.htm Extreme-Ukraine site, short history of TIA-MC-1 in English]

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