This cartridge works on the following PCBs and with the following models of Spectrum:

PROM Size: 16K


This 3rd party 16K ROM cartridge produced by Brendan Alford performs a variety of tests to assist in the diagnosis of Spectrum faults.

The ROM performs the following categories of tests:

ZX Spectrum Diagnostics Menu Screenshot ZX Spectrum Diagnostics ULA Test Screenshot ZX Spectrum Diagnostics Keyboard Test Screenshot

When adding to a ZX ROM Cartridge Creator compilation, make sure the 'Paging Locked' option is set to 'None'.

Full details about the tests performed, along with the ROM and its source for download are available from the ZX Spectrum Diagnostics website.