ZX Spectrum Diagnostic ROM

 This listing is for ZX Spectrum external diagnostic ROM, ideal for analysis of faulty ZX Spectrum machines

available diagnostic ROMs are selectable with DIP switch

   Retroleum DiagROM v1.56 Brendan Alford diagnostics v0.37

works with ZX SPECTRUM 16k/48K/48K+/128k/+2

- four supply indication LEDs (+5V, +9V, -5V, -12V) for quick power failure diagnosis

small and compact design

reset button