The Demon Development Cartridge was an addon from John Morrison.
Now, thanks to Jose Leandro, the hardware specialist of the spectrum, with his famous page :
http://trastero.speccy.org/cosas/JL/JL.htm
We can know more about this hardware.
Pictures
- Demon Development Cartridge Layout, thanks to Jose Leandro
Demon Development Cartridge - Front Box
Demon Development Cartridge - Side Box
Demon Development Cartridge - Open Box
Demon Development Cartridge - Components
Demon Development Cartridge - Tracks
Demon Development Cartridge - PCB Front
Demon Development Cartridge - PCB Back
Demon Development Cartridge - Layout
Publicity
Download
- Demon (ROM).zip (ROM for Emulators)
- Demon (Eagle).zip (Demon Development Cartridge files for Eagle)