mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-28 10:59:16 -04:00
Matthew Stanley
1b59103b3c
Two passive, always-on rings for auditing memory-card reads end-to-end without arming/timing probes: card_read_summary (non-evicting, first 32 successful reads): Captured at the MC_READ_END transition in sio_process_byte. Records slot/cmd/sector/checksum/data_idx/first 16 bytes/cycle/caller func. TCP cmds: card_read_summary, card_read_summary_reset. card_data_writes (4096 entries, rolling tail): Arm side: sio_read(SIO_RX_DATA) sets a pending flag while the card protocol is in MC_READ_DATA..MC_READ_END. Check side: psx_write_byte/half/word capture the next RAM write whose new_val matches the armed RX byte, then disarm. Records dest addr / value / store_pc / func / mc_idx / slot / cycle. TCP cmds: card_data_writes, card_data_writes_reset. Helpers: tools/probe_card_reads.py tools/probe_card_writes.py tools/probe_card_writes_raw.py tools/peek_cards.py Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
8 lines
303 B
Python
8 lines
303 B
Python
"""Print first 16 bytes of each on-disk card image."""
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for path in ('dummy.0.mcr', 'dummy.1.mcr', 'card1.mcd', 'card2.mcd'):
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try:
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d = open(path, 'rb').read()[:16]
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print(f'{path:>15}: ' + ' '.join(f'{b:02X}' for b in d))
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except Exception as ex:
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print(f'{path}: ERR {ex}')
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