# Ch373 Audit Log - Earlier-Capture Eight-Draw Expansion

## Fixture

- `zsrte8` groups eight chronological authentic draws from capture `20260624224047` into three
  runtime-CLUT epochs: 204, 204, and 90 triangles.
- Epoch 0 performs the texture fill; epochs 1 and 2 perform CRC-verified resident reuse at CBP `508`.
- Native geometry is bounded by x `63..443`, y `40..471`. The feeder lists are 1,843, 1,843, and 817 words.

## Integration Gate

- Depth-4096 integration and independent trace runs both pass with 520,733 accepted fragments,
  429,471 persistent-Z updates, three fresh drains, and zero drops.
- The exact scoreboards report Z `0/307200` and color `0/128277` mismatches.
- Request-FIFO high-water is bounded at 2,090, 940, and 1,757 requests across the three epochs,
  below the production depth of 4,096.

## Silicon Closure

- The DE25 completed one texture fill, two CRC-verified resident reuses, all 498 expected draw records, and
  zero fragment drops. Its framebuffer reports 128,277 nonzero pixels in bounds `(65,41)..(443,470)`.
- Board and integration framebuffers are byte-identical at SHA-256
  `3a2395cc0d4829560016aeac852b029ba46248ee1dcae3d74d541a64688b2a32`.
- The complete 520,733-fragment trace independently replays to the board framebuffer exactly:
  429,471 Z-pass updates, 128,277 covered pixels, zero uncovered writes, and `307200/307200` exact colors.

## Result

Ch373 closes the earlier-capture eight-draw expansion on silicon with no RTL, constraint, or fit change.