ROM Cartridge Interfaces
AGF Romslot
Kempston Pro Interface
AGF Romslot
Not a joystick interface but just a ROM cartridge slot which is compatible with ZX Interface 2 software.
Includes 'Restart' feature and a full-width expansion port.
Research required
Kempston Pro Joystick Interface
3 joystick ports, ROM cartridge slot and compatible with ZX Interface 1.
Two of the joystick ports are Sinclair/Psion compatible, the third has a dual facility and can be either Kempston or cursor key compatible.
Research required
RAM Turbo
2 joystick ports, ROM cartridge slot and full width through port.
Fits both ZX Spectrum and ZX Spectrum+.
Microdrive compatible.
Research required
ZX Interface 2
2 joystick ports, ROM cartridge slot. ZX81 style through port only supports Sinclair ZX Printer.
Image from 'Sinclair Special' promotional material depicts a ZX Interface 2 with 2 Planetoids cartridges,
one of which has been inserted into the unit.
Test item
Page Revised: 25/08/2026