TIA-MC-1

TIA-MC-1 (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.

Games
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 composed 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” (51 cm) TV screen
 * Main RAM — 8KiB.
 * Character RAM — 8KiB.
 * Video RAM — 2KiB.
 * Sprite ROM — 32KiB.
 * ROM with game code and background graphics — up to 56KiB.

Emulation
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 three games (Konek-Gorbunok, S.O.S. and Snezhnaya koroleva) are dumped and supported by emulators. An ongoing search for other games is in progress.