New page: bcm4500/register-map.mdx consolidates all register
addresses (direct, indirect page 0, FX2 XRAM/IRAM, I2C controller)
into a single lookup reference with cross-reference index.
Expanded sections:
- fw213-variants: hardware detection mechanism, distinguishing
characteristics table, FW1 demod type detection signatures
- demodulator: probe logic (3x3 retry, INT0 40-iteration boot probe
at 0x7F/0x3F, no_demod_flag graceful degradation)
- version-comparison: version ID gap aside (v2.07.04 is a kernel
constant, not a real firmware release)
Cross-links added to signal-monitoring and tuning-protocol pages.
Ryan Malloy
867b304773