{"id": "c1256", "title": "C1256 — Generate the full finite placement field", "filename": "C1256.md", "role": "Research action", "step": 1256, "sha256": "21b039bf093411249c28a49958613b974c4b5d3d1312a863f89f43bc3895fffd", "bytes": 1281, "origins": ["C480–C1634/Research_Cycles/C1132_C1431_Recovered/journal.json#C1256"], "download": "/sources/21b039bf093411249c28a49958613b974c4b5d3d1312a863f89f43bc3895fffd.md", "format": "md", "derived": true, "tags": ["Regular"], "excerpt": "How do thethree source switches produce the405 envelope?", "content": "# C1256 — Generate the full finite placement field\n\n## Question\n\nHow do thethree source switches produce the405 envelope?\n\n## Inputs\n\n```json\n{\n  \"T\": 60,\n  \"C\": 130,\n  \"S\": 215\n}\n```\n\n## Sources\n\n```json\n[\n  \"C1253\",\n  \"Strategy §4.1\",\n  \"File07 §2.11.1a\"\n]\n```\n\n## Opened utc\n\n2026-09-28T05:45:32.030891+00:00\n\n## Results\n\n```json\n{\n  \"placement_field\": {\n    \"path\": \"model/regular_kernel_eight_state_field.json\",\n    \"sha256\": \"b72b31629e31996bd0e090a0f1833f4f5a3361ea610ca8d600d0a91ba1ebef43\",\n    \"bytes\": 1037\n  },\n  \"offsets\": [\n    0,\n    60,\n    130,\n    190,\n    215,\n    275,\n    345,\n    405\n  ],\n  \"gaps\": [\n    60,\n    70,\n    60,\n    25,\n    60,\n    70,\n    60\n  ]\n}\n```\n\n## Finding\n\nThe completefield is0,60,130,190,215,275,345,405, with60|70|60|25|60|70|60 spacings. Its405 width comes fromT+C+S, independently of thecoefficientfive formula.\n\n## Reassessment\n\nDistinguish thetwo different four-state restrictions that source summaries use.\n\n## Checks\n\n```json\n{\n  \"eight_distinct\": true,\n  \"width405\": true,\n  \"spacing\": true\n}\n```\n\n## Closed utc\n\n2026-09-28T05:45:32.031407+00:00\n\n## Record provenance\n\nExact record hash: `8c7738cd9781e1ad93c18a0353a16161b968b64bfedfa7dd888503fa7f2b7ff8`\n\nSource journal: `Research_Cycles/C1132_C1431_Recovered/journal.json`", "journalDownload": "/sources/6adb632ce171623c2bce60d7ed58ae319ccb379cf76b751c0a477c1742fd348c.json", "evidenceLinks": [{"id": "d-b72b31629e31996b", "title": "model/regular_kernel_eight_state_field.json"}, {"id": "d-1aa4e02dd346c8e0", "title": "File 07"}]}