Skip to content
Game save workbench
Local-first tools No installation Support status shown
SAVEEDITOR.COM
Browse tools
DEVICE-LOCAL Favorites and recent pages stay in this browser.

File Analysis

GameCube Datel SAV Payload Boundary Inspector

Report the exact validated Datel SAV wrapper/payload byte boundary without extraction.

GameCube

01 / Tool workbench

Use the runtime only when it is actually ready.

The application shell fails closed. An input interface is not enabled merely because a WordPress Tool record exists; the declared engine must be registered in the current build.

GameCube Datel SAV Payload Boundary Inspector
BROWSER LOCAL

Checking whether the declared runtime module is loaded. No input has been processed.

Session change summary

No output has been built in this session.

Read-only Phase 64 boundary

This Tool exposes one distinct Nintendo structural diagnostic already supported by strict SaveEditor parsers. It never repairs, decrypts, resigns, migrates, converts, inserts, deletes, or rewrites save bytes.

Fail-closed evidence

Output is bound to the selected source by SHA-256. Invalid geometry, malformed checksums, ambiguous redundant metadata, unsupported wrappers, or out-of-range header relations are refused rather than guessed.

GameCube Datel SAV Payload Boundary Inspector

Report the exact validated Datel SAV wrapper/payload byte boundary without extraction.

02 / Compatibility

Know the supported input before opening a file.

Compatibility fields are intentionally explicit. Missing values stay unclaimed rather than being filled with generic assumptions.

Accepted extensions

.sav

Platforms

GameCube

Supported versions / editions

Only the exact Nintendo representation already accepted by the existing strict SaveEditor parser for this profile.

Input constraints

Non-empty local file within the permanent 16 MiB per-file ceiling; the profile-specific strict parser/structural predicate must pass.

Known limitations

Read-only structural diagnostics only. No repair, filesystem write, undelete, decryption, resigning, game-specific checksum work, game-field inference, migration, or conversion authority is added by Phase 64.

Output / result

A deterministic browser-local JSON diagnostic report containing source SHA-256 identity and parsed structural metadata only; raw save payload bytes are not embedded.

03 / Instructions

Use a reversible workflow.

File-oriented workflows start with an untouched original. Tool-specific instructions add only details documented for this utility.

  1. 01Keep the original

    Preserve an untouched copy before creating or transforming binary output.

  2. 02Confirm scope

    Match the file size, format, platform, and version to the support information on this page.

  3. 03Process locally

    Use the runtime only when the page reports that its declared engine is loaded.

  4. 04Validate output

    Compare or test the result before replacing any working source file.

Tool-specific steps

Choose one local file matching the documented representation. SaveEditor validates the relevant Nintendo structure before producing a diagnostic report. Failed structural predicates are refused rather than guessed.

04 / Privacy and processing

The processing mode is part of the product contract.

SaveEditor.com should state local processing only when the implementation truly keeps file contents in the browser. Server or hybrid processing must be disclosed just as clearly.

Declared mode

Browser local

Runtime state

Operational

Tool-specific privacy notes

Phase 64 reads only the explicitly selected local file in the browser under the permanent 16 MiB ceiling. The nintendo-ecosystem-v2 runtime has no upload, telemetry, or server save-processing path.

05 / Troubleshooting

When a file is rejected, do not force it.

A rejection can indicate an unsupported size, format, version, platform, or byte sequence. Preserve the original and correct the input instead of bypassing validation.

Wrong file or size

Re-check the documented input type and browser size limit before retrying.

Unsupported format

A generic converter does not imply support for every game-specific container, signing scheme, or serialization format.

Source was modified

Return to the untouched source instead of repeatedly processing a damaged or partially transformed file.

Known Tool issues

A refusal means this exact diagnostic profile could not prove its required representation or structure. Renaming a file or matching a common size does not bypass validation.

06 / Verification

Support claims should be traceable.

The verification date, method notes, and public references are kept separate from marketing language so compatibility can be reviewed over time.

Last verified2026-08-11
Profilegamecube-datel-sav-payload-boundary-inspector

Method notes

Verified against existing strict GameCube, Controller Pak, DeSmuME and Wii backup-header parsers, malformed/truncated negative cases, SHA-256-bound output, source immutability, independent reference checks and full historical regression/source-package parity.

Public references

  1. https://github.com/dolphin-emu/dolphin/blob/master/Source/Core/Core/HW/GCMemcard/GCMemcard.h
  2. https://github.com/dolphin-emu/dolphin/blob/master/Source/Core/Core/HW/GCMemcard/GCMemcard.cpp
  3. https://github.com/dolphin-emu/dolphin/blob/master/Source/Core/Core/HW/GCMemcard/GCMemcardUtils.cpp

07 / FAQ

Questions to answer before editing.

These answers are generated from the Tool record and current runtime state rather than generic compatibility promises.

Is GameCube Datel SAV Payload Boundary Inspector ready to use?
The Tool record is verified and declares an operational runtime. The page enables its input controls only when the declared engine module is loaded in the current build.
Does processing stay in the browser?
Yes for this declared mode. The loaded runtime processes the explicit input in the browser; Tool-specific privacy notes describe the exact scope and limits.
Should I keep the original file?
Yes. Keep an untouched source file until any generated output has been validated.
What if my input is rejected?
Use the validation message to correct the base, encoding, width, timezone, byte alignment, or size. The runtime does not guess through invalid input.