# Ch378 Audit Log - Nineteen-Draw Third-Binding Expansion

- `zsrte19` extends the frame-pure Ch377 scene with draw `93634` (`TBP=3072`, authentic CBP `14080`), adding a
  third texture and runtime-CLUT binding in an eighth epoch at native 640x480.
- The initial three-bank layout at relocated CBPs `504/508/512` was rejected before simulation because `512` is
  beyond the 512-block BRAM. The fixture is instead deliberately relocated to `500/504/508`; no RTL, constraint,
  or fit change is involved.
- Local depth-4096 integration passes with 543,715 accepted fragments, 444,244 Z-pass updates, eight fresh drains,
  zero drops, exact Z `0/307200`, and exact color `0/139585`. Request-FIFO high-water is 2,090, 940, 1,757,
  100, 81, 84, 21, and 733.
- On the DE25, all three palette banks, all three texture fills, all 1,024 expected records, and every drop gate pass.
- Board and traced integration framebuffers are byte-identical at SHA-256
  `941ee4579c220a82240f30aae86f74ae9c0873923c0749835e75f49a089d6186`.
- Replay-color is exact at `307200/307200`: 543,715 fragments, 444,244 Z-pass updates, 139,585 covered pixels,
  and zero uncovered writes.

Ch378 closes the three-palette, three-texture native-640x480 persistent-Z expansion on silicon without RTL,
constraint, or fit changes.
