frame_primitives.py decodes every coeff-copy word over the draw: 1051 SEND,
334 SENDE, 384 TILE, 327 GOTO, 231 STOP across 105 tiles -- but only 2 distinct
SEND payload addresses (0x08015xxx/0x08017xxx). That's double-buffering: the
firmware compiles each primitive into an alternating coeff block and SENDs it,
so the content changes over time while the addresses don't. A from-scratch full
frame must snapshot each primitive's payload at its SEND, then run all of them.
Readout §05 + notes updated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
