Do you have a favorite test program not listed here? Share your own ZX Spectrum test program link discoveries in the comments below!
| Chip | Location | Failure symptom on screen | | :--- | :--- | :--- | | IC3 (4116) | Bit 0 | Missing pixels in character 1 | | IC6 (4116) | Bit 3 | Corrupted lower case letters | | IC10 (4116) | Bit 7 | Vertical stripes on attribute area |
Tell me which you’d prefer (assembler source, TAP/TZX creation script, or a packaged test-suite layout) and target machine (48K, 128K, +3, or a specific clone).
Paul Farrow provides several essential tools, including the official Sinclair Test ROM and a 128K-specific RAM/ROM tester.
Developed by Phil Ruston (Retroleum), this custom ROM structure is highly regarded for its clear visual interface and aggressive memory testing algorithms.