From Sega Retro
The Rapid Fire Unit (ラピッドファイアユニット) , known simply as the Rapid Fire in Brazil, is an accessory designed for use with the Sega Master System. It is a small device that is inserted between a two-button controller and the console, providing an auto-repeat capability for the control buttons. This saves a lot of wear-and-tear on fingers for games like Astro Warrior and limits the need for a user to buy brand new controllers with built-in turbo features.
The auto-repeat can be turned on for each button independently.
In North America this unit was offered by Sega via their early "Team Sega" newsletters. Buying three games would get you a rapid fire unit, though it was also available to purchase separately in stores. It was also packaged with the Control Stick under the name "Rapid Fire Control Stick".
Hardware
Switches to turn on/off auto-repeat
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Plug for V
system -----------------
| | |
V | 2 [X ] |
--- | --
| |=======| RAPID FIRE ||<- Plug for
--- | -- controller
| 1 [ X] |
| |
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Physical Scans
| Master System, US
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Cover
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| Master System, US (Mail Order)
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Cover
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| Master System, BR
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Cover
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External Links
