DIAGNOROM is a ROM switcher for Sinclair ZX Spectrum computers.
Features:
- one button AVR controlled ROM switching routine
- 15 ROMs uploaded (refer to the list printed at PCB, look at the second photo) - some old school games and diagnostic ROMs are present
- high quality edge connector
- 4 LEDs are indicating selected ROM number in binary format

- change the ROM by pressing button on the device
- last selected ROM number is stored between power cycles
- works with original ZX Spectrum machines only (16, 48, 128, 128 +2 [grey case])
- not compatible with computers produced by Amstrad
- plug and play