Velesoft Parallel Interface

Peripheral
Submitted by Dan Dooré on Sunday, June 2, 2024 - 23:06.
Release Year
2016
Author
Velesoft
Description

Parallel interface using a chip MHB8255 (any 82C55) and is is based on schematic of the old ZX interface UR-4.

The Kempston joystick is connected to gate A of the parallel chip activated by port 31 so the joystick is usable as kempston in ZX Spectrum games.

Packaging
Schematic of parallel interface for SAM COUPE (schematic without joystick connector). Schematic by Ing. Richard Haramule
Schematic of UR-4 interface from ZX
Trivia

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