Catalogue of Arcade Emulation Software - the Absolute Reference

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Tac/Scan (c) 04/1982 Sega.


Sega G80 vector hardware

Main CPU : Z80 (@ 4 Mhz), I8035 (@ 400 Khz)

Sound Chips : Custom (@ 400 Khz)

Screen orientation : Vertical

Video resolution : 224 x 256 pixels

Screen refresh : 40.00 Hz

Palette colors : 256

Players : 2

Control : dial

Buttons : 2


Tac/Scan was the only Sega vector game to use a vertically mounted (portrait) monitor.

A Tac/Scan machine was shown at the 2003 classic arcade games show 'California Extreme' in San Jose, California.


* The most effective strategy for extending your playing time in Tac/Scan is to add as many extra ships as possible to your reserve (listed in upper-left corner of screen). Ships must be caught by the leading ship position which is further signified by a red colored underline in order to be added to your reserve. To begin capturing ships you must have at least one open position in your fleet; otherwise the game will not award ships (kill off two of your ships on the edges of your fleet at the very beginning of the game to achieve the highest amount of reserve ships during the first wave).

* Wave one in Tac-Scan should always be played with a minimum of two ships in your fleet, with additional ships added as the levels get faster and harder. The second and third wave can almost always be effectively played with only two ships, and it is very important not to waste reserve ships in these two waves (saving those ships for the more dangerous first wave).

* Always keep changing directions on both wave 1 and 2. It is very effective to destroy ships while turning on wave 1, and on wave 2 ships will have a hard time hitting you if you don't stay in the same position for very long.

* The faster you fire, the shorter your shots will travel. Allowing a short pause between shots will allow them to travel the distance of the screen.


* Consoles :

Atari 2600 (1982)

Sony PlayStation 2 (2006, "Sega Genesis Collection")