mirror of
https://github.com/RetroPortingToolKit/psxrecomp
synced 2026-10-25 18:05:12 -04:00
Matthew Stanley
e88e9a0233
Before: only sector 0 read succeeded; sector ≥1 reads aborted at 2 bytes
because mc_flag was loaded from mc_slots[].flag on every 0x81 select but
never saved back. The clear in MC_CMD lived only in the working static, so
every reselect re-loaded the stale 0x08 ("new card / changed battery") init
value, and the BIOS bailed every multi-sector op as "card was just inserted,
re-init."
After: BIOS shell memcard menu reads the full 15-sector directory area for
both slots. Real save filenames decode (e.g. "BISLPS-01234SAVE00") and per
card icons render in the bottom panes — the Phase 4 success criterion.
Also bundled this session:
- debug_server: B9D0..B9F0 added to always-on wtrace ranges; fn_dump_parse
default window scoped to 1M most-recent entries (filter scans against the
full 128M ring used to freeze the debug server thread for many seconds).
- ISSUES.md + diagnostic tools/*.py written during the audit.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
45 lines
1.6 KiB
Python
45 lines
1.6 KiB
Python
"""Dump full B0 table at RAM 0x874 and find InitCARD/StartCARD entries."""
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import socket, json
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def call(d):
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s = socket.create_connection(('127.0.0.1', 4370)); s.settimeout(15.0)
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s.sendall((json.dumps(d) + '\n').encode())
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buf = b''
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while True:
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try: c = s.recv(65536)
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except socket.timeout: break
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if not c: break
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buf += c
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if buf.count(b'{') == buf.count(b'}') and buf.strip(): break
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s.close()
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return json.loads(buf.decode())
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def read(addr, n):
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r = call({'id': 1, 'cmd': 'read_ram', 'addr': f'0x{addr:08X}', 'len': n})
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return bytes.fromhex(r.get('hex', ''))
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# B0 table
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b0 = read(0x80000874, 0x200)
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print(f'B0 table @ RAM 0x874 ({len(b0)} bytes):')
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for i in range(0, len(b0), 4):
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val = int.from_bytes(b0[i:i+4], 'little')
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note = ''
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if val == 0x00005DA8: note = ' <-- FUN_bfc158a8 (chain init)'
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if val == 0x00004C70: note = ' <-- FUN_bfc14770 (chain enabler [0x74BC]=1)'
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if val == 0x00004CF4: note = ' <-- FUN_bfc147F4'
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if val == 0x00005FB8: note = ' <-- _card_write'
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if val == 0x00005F04: note = ' <-- _card_read'
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if val == 0x00005E50: note = ' <-- _new_card'
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if val == 0x00006524: note = ' <-- ??'
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if val and (val & 0xfff00000) == 0:
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print(f' B0[0x{i//4:02X}] (off+0x{i:03X}): 0x{val:08X}{note}')
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# A0 table
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print()
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a0 = read(0x80000200, 0x100)
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print(f'A0 table @ RAM 0x200 ({len(a0)} bytes):')
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for i in range(0, len(a0), 4):
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val = int.from_bytes(a0[i:i+4], 'little')
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if val and (val & 0xfff00000) == 0:
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print(f' A0[0x{i//4:02X}] (off+0x{i:03X}): 0x{val:08X}')
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