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Spectrum - Kempston Joystick Interface

€ 25.00

Item Details

Video Games
Used, Good


The Kempston Interface, produced by Kempston Micro Electronics, is a joystick interface used on Sinclair's ZX Spectrum series of computers that allow joysticks complying with the de facto Atari joystick port standard to be used with the machine. It is one of the most widely supported standards on the machine. The interface itself would be attached to the computer's rear expansion port with a single joystick port on the front or top of the system.

It came out as the clear winner against other standards such as Protek and AGF's cursor-based solution and the Fuller standard during the days of the 48K Spectrum. However, when Amstrad released the ZX Spectrum +2, the computer featured a built-in joystick interface that was software-compatible with Sinclair's ZX Interface 2 standard. Unfortunately, the bundled SJS-1 joystick was electrically incompatible with the Atari standard. The Interface 2 standard simulated keypresses on the numerical keys (1 to 5 and 6 to 0 being left, right, down, up, fire for the 'left' and 'right' joysticks respectively) and hence were ideal for games with no official joystick support but in which the keys could be redefined.

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