mirror of
https://github.com/RetroPortingToolKit/psxrecomp
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Alexandros Mandravillis
22 lines
1.0 KiB
Markdown
22 lines
1.0 KiB
Markdown
# GPU upload diagnostic retention
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GPU A0 upload diagnostics retain the first 128 uploads. Once the history is
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full, subsequent uploads continue normally without changing retained entries.
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Reset the active capture slot before every upload so a full history cannot
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keep incrementing the last retained entry's signed word counter.
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The authored regression compiles the production capture code at O0 and O2,
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checks retention at capacity, and exercises the largest legal upload. It
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requires a GCC-compatible compiler and no BIOS or game assets:
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```sh
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python runtime/tests/test_gpu_upload_history.py --cc gcc
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```
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The defect caused a long Biohazard TAS replay to crash after return 214410.
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The campaign fix passed that boundary and executed all 239202 returns. That
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run still first differed from its reference at return 233568 (one clock early,
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nine terminal RAM bytes different). This diagnostic fix is not a claim of
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Biohazard replay fidelity. It requires rebuilding the runtime, not regenerating
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game code; game framework pins are not changed by this submission.
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