Kempston Pro Joystick Interface

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Kempston produced a number of joystick interfaces for the Sinclair ZX Spectrum to allow normal Atari-style DE-9 connector joysticks to be used with it. Apart from implementing existing joystick interfacing modes they produced their own standard which delivered the joystick state on the Z80 bus at port 31 (read in BASIC using IN 31). This meant that the joystick did not produce key-presses like the other standards and the method was soon borrowed by other interface manufacturers and became quite popular.

This model allows the connection of up to 3 separate joysticks via 9 pin d plugs as well as a rom pack via the use of an adaptor. The one we have is complete in box.

Date : Unknown

Manufacturer : Kempston

Physical Description : Joystick interface Instruction booklet Receipt (in 2 parts) Polystyrene box and lid Cardboard box

This exhibit has a reference ID of CH36032. Please quote this reference ID in any communication with the Centre for Computing History.

Scan of Document: Kempston Pro Joystick Interface

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