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Fingerprint Copperline's new open-source A2091 ROM - #9

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sidick merged 1 commit into
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fingerprint-a2091-openrom
Sep 2, 2026
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Fingerprint Copperline's new open-source A2091 ROM#9
sidick merged 1 commit into
mainfrom
fingerprint-a2091-openrom

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@sidick sidick commented Sep 2, 2026

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Summary

  • test/a1200-a2091.toml targets Copperline's new clean-room open-source A2091 ROM (copperhf-device branch, commit 90e91de2, not yet merged/released) rather than the real Commodore firmware devsoak already has fingerprinted
  • The resulting fingerprint (scsi.device 42.40) is pin-for-pin identical to a4091.device-42.39-openrom.txt, confirming the shared device/SCSI/mounter code the A2091 ROM's own README claims actually behaves the same on both emulated boards
  • fingerprints/INDEX.md updated with the new entry and that observation

Test plan

  • ci/fingerprint.sh test/a1200-a2091.toml scsi.device 0 ... produced a clean RESULT PASS against a locally built Copperline (target/release, copperhf-device branch)
  • Diffed against a4091.device-42.39-openrom.txt: identical pins/dialects/finding

🤖 Generated with Claude Code

https://claude.ai/code/session_01EbDNgMg5EyWbEBRUvAoqP4

test/a1200-a2091.toml targets Copperline's A2091 Zorro II SCSI board
with its bundled clean-room open-source A2091 ROM (copperhf-device
branch, commit 90e91de2, unreleased) rather than the real Commodore
firmware already covered by scsi.device-37.64-a2091.txt.

Every pin, dialect, and the unlisted-NSCMD_ETD_READ64 WARN finding come
back byte-identical to a4091.device-42.39-openrom.txt - expected, since
the new ROM's README says its device/SCSI/mounter code is shared with
the A4091 open ROM. Recorded as a clean confirmation that the shared
code behaves identically on both emulated boards, not as a new finding.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EbDNgMg5EyWbEBRUvAoqP4
@sidick
sidick merged commit 33d2a3d into main Sep 2, 2026
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@sidick
sidick deleted the fingerprint-a2091-openrom branch September 2, 2026 13:58
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