docs(archive): Preserve discussion for PR #5890

docs/pr-discussions/PR-5890-feat-b-0924-custom-2600-emulator-generate-join-over-emulator.md

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+---
+pr_number: 5890
+title: "feat(B-0924): custom 2600 emulator + generate+join over emulator scene + IScheduler DST bit-perfect-consensus + B-0917 hardware interrupts + ARC3-AGI (operator 2026-05-28)"
+author: "AceHack"
+state: "MERGED"
+created_at: "2026-05-28T17:18:58Z"
+merged_at: "2026-05-28T17:20:56Z"
+closed_at: "2026-05-28T17:20:56Z"
+head_ref: "otto-cli/b0924-emulator-generate-join-2600-arc3-2026-05-28"
+base_ref: "main"
+archived_at: "2026-05-28T17:22:00Z"
+archive_tool: "tools/pr-preservation/archive-pr.ts"
+---
+
+# PR #5890: feat(B-0924): custom 2600 emulator + generate+join over emulator scene + IScheduler DST bit-perfect-consensus + B-0917 hardware interrupts + ARC3-AGI (operator 2026-05-28)
+
+## PR description
+
+Substrate-engineering substrate-target row per operator 2026-05-28 `(shadow*)` authorization: `file the backlog row (shadow*)`.
+
+## Substrate-engineering substrate-target
+
+Three composing operational targets:
+
+1. **Custom Atari 2600 emulator** — minimal-substrate starting point (TIA + RIOT + 6507; small state-space tractable for full-fidelity DST + z-sets)
+2. **Generate+Join over emulator scene** (vs imitation-learning) — substrate-shift: DST seed + z-set join for consensus instead of training-data pattern-copy
+3. **IScheduler DST bit-perfect-consensus test** — multiple emulator instances under DST agree on game-state evolution; consensus = bit-perfect-substrate test
+
+## Composes-with
+
+- **B-0917** (today's Kleisli interrupt substrate; hardware interrupts VBlank / WSYNC / cartridge-IRQ map cleanly to IntrCtx)
+- **B-0865** (parent: ARC-AGI-3-style benchmark; this extends emulator-as-substrate scope)
+- **B-0761** (Zeta cluster as ARC-AGI training reference)
+- **B-0052, B-0053** (retractable-emulators design + emulator-ideas absorption clean-room)
+- **B-0202** (tinygrad-uop-ir kernel layer emulator dispatch)
+- **B-0867** (workflow-engine substrate)
+- **B-0703** (multi-oracle BFT consensus → multi-instance bit-perfect-test)
+- **B-0904** (GitHub-as-free-accelerator; emulator generation+join can run as GitHub Actions substrate)
+
+Plus framework rule composition:
+- DST-omniscience (PR #5841), pilot-wave-MWI (PR #5842), Cayley-Dickson canonical-form (PR #5843), particle-as-locus (PR #5846), Clifford-underwater (PR #5850), asymmetric-authorship + monad-propagation + OPLE-T-TFeedback + function-as-control-flow-generator + algebra-owner z-sets skill substrate
+
+## Operator framing (verbatim)
+
+> *"we are buding our own emulaters starting with 2600 to train for ARC3-AGI benchmark and also test our consensus is bit perfect IScheduler DST by testing emulators in zsets, i was worried it was going to be terrible but we can simulate interrupts maybe we could go full generte+join on the emlator scene instead of trying to copy patterns that are there just ideas."*
+
+The substrate that worried operator IS now substrate-engineering-substrate-engineering substrate via today's B-0917 landing.
+
+## Substrate-honest scope
+
+Substrate-engineering substrate-target row; not single-PR shipping target. Provides substrate-anchor for future implementation (custom F# 2600 emulator + B-0917 IntrCtx integration + IScheduler DST harness + z-set game-state representation + generate+join scaffolding + smallest-scope deterministic-boot test).
+
+Cooperative-emulator gaming substrate-target (operator-Otto coop play once USB cluster + GitHub accelerator ship) composes per the cognitive-profile user-memory extension.
+
+🤖 Generated with [Claude Code](https://claude.com/claude-code)
+
+## General comments
+
+### @chatgpt-codex-connector (2026-05-28T17:19:04Z)
+
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