# Ch377 Audit Log - Eighteen-Draw Second-Palette Residency

- `zsrte18` adds the final later, on-screen CBP `508` candidate to Ch376, producing a seven-epoch
  `fill, reuse, reuse, rebind, reuse, reuse, reuse` runtime-CLUT sequence at native 640x480.
- Local depth-4096 integration passes with 532,162 accepted fragments, 436,333 Z-pass updates, seven fresh drains,
  zero drops, exact Z `0/307200`, and exact color `0/132936`. Request-FIFO high-water is 2,090, 940, 1,757,
  100, 81, 84, and 21.
- On the DE25, both palette banks, both texture fills, all 956 expected records, and every drop gate pass.
- Board and traced integration framebuffers are byte-identical at SHA-256
  `9b49a9b56cb99296d09b12c535145b64dd8ae80b32f06e2a9934801567fe95bb`.
- Replay-color is exact at `307200/307200`: 532,162 fragments, 436,333 Z-pass updates, 132,936 covered pixels,
  and zero uncovered writes.

Ch377 closes the eighteen-draw two-palette residency expansion on silicon without RTL, constraint, or fit changes.