BlackMark f32a27ff15 tsb: use the named register surface ...

Direct register access now reads through the named surface
(hw::mcusr::wdrf.test(), hw::ucsr0b::write(...)) instead of the string form,
matching how libavr itself is written. Zero-overhead: pure 740 B, tricks 658 B,
asm 508 B unchanged, all byte-identical across modes, protocol green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-19 14:55:01 +02:00

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