Zx Spectrum Test Program Link

Don't have an external ROM board or an EPROM programmer? You can still run test programs via the Ear port using a smartphone or PC as a tape player. "The Spectrum Test" by Horizon Software.

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Depending on the state of your ZX Spectrum, you will need to choose one of two methods to execute a test program: zx spectrum test program link

If your Spectrum can power on and load a program (even if it crashes later), these .tap or .z80 files are your starting point.

If your Spectrum boots to the basic prompt, you can link it to a modern PC, smartphone, or cassette player to load diagnostic software. Don't have an external ROM board or an EPROM programmer

A: Yes. Unlike some “burn-in” programs from the 80s, modern diagnostic suites do not over-stress the ULA or transistor driver circuits. However, do not leave a pattern test running for 72 hours straight on an un-heatsunk ULA.

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3. Tape-Based Test Programs (e.g., Sinclair Factory Test Tape)

Further reading: The source code of the 48K Diagnostic ROM is available in annotated Z80 assembly, often found on GitHub under zx-spectrum-48k-diagnostic . The original Sinclair service manual also describes the extended test harness used in factory repairs.