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# 2980b7b6d7cd enhanced-x16-emulator / tests / pt / README.md
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ProcessorTests fixtures

wdc65c02.bin and 816-emu.bin are committed. They are the converted form of SingleStepTests/ProcessorTests: 100 cases per opcode, taken as a prefix of each opcode's file.

They are committed rather than downloaded because the conversion is 2.6 MB and the JSON it comes from is 3.6 GB across the suites. Downloading that on every CI run cost eight minutes and a cache dependency, and made the tests impossible to run offline.

Provenance

  • 65C02: https://github.com/SingleStepTests/65x02 — wdc65c02/v1, MIT licensed, Copyright (c) 2024 Thomas Harte et al.
  • 65816: https://github.com/SingleStepTests/65816 — v1

The cases are measurements of what the hardware does with a given starting state. What is committed here is our own encoding of those measurements, in the format documented in pt_convert.py, not a copy of the upstream files.

Regenerating

python tests/fetch_pt.py --force
python tests/fetch_pt.py --force --variant 816-emu

The JSON lands in tests/pt/<variant>/ and is not committed. Cases are taken as a prefix rather than sampled, so any machine produces the same fixture and the exact per-opcode counts in the baselines stay meaningful.

Deeper runs are a local matter: --cases 10000 uses everything upstream has. Do not commit the result, because a baseline built for one case count cannot be compared against a run at another, and the test says so rather than guessing.