Records the differences between this implementation and what real GC software
expects, with the evidence and the driver source for each, so they are worked
through rather than rediscovered. Open items: no hardware RX filtering,
hardcoded ring geometry, NCRB undecoded, and registers that read 0x00 where
real hardware has non-zero defaults. Also records what is deliberately NOT to
be implemented (the device-initiated challenge/response) and that two of our
registers (TWD, HIPR) do not exist on real hardware.
Notes explicitly that games use the official Nintendo SDK driver, which none of
the three readable drivers is, so "no open driver does this" is weaker evidence
than "the hardware has no such register".
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Roflin
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