Redump Snes Updated

Redump SNES: A Community-Driven Effort to Preserve SNES Games

The Redump SNES project is a community-driven initiative aimed at creating a comprehensive and accurate dump of all Super Nintendo Entertainment System (SNES) games. The project is part of the larger Redump effort, which focuses on preserving and documenting ROM dumps of various classic consoles.

5. The "Header" Issue

Historically, copier devices like the Super Wild Card added a 512-byte header to the beginning of the ROM file to manage SRAM mapping and region bypassing.

• Redump Policy: The Redump database generally rejects copier headers. Valid dumps should be raw (headerless).
• Detection: If a file size is X mb + 512 bytes, it likely has a copier header.
• Removal:

  ucon64 --strip gamename.sfc
  

  Remove the header before hashing for submission.

2. Why accurate SNES dumps matter

• Cartridges vary by mapper chips, co‑processors (Super FX, SA-1, DSP variants), and EEPROM/FLASH sizes; incorrect dumps lead to broken emulation or lost hardware behavior.
• Physical media degrade; creating high‑quality images while hardware still works preserves software for research and future emulation.
• Archival images allow verification of provenance, eliminate duplicates, and enable checksumming/validation against community databases.

Redump SNES — A Practical Treatise

This document explains what “redump SNES” means, why it matters, legal and ethical considerations, tools and workflows, best practices for archival-quality dumps, verification, metadata, preservation, and community resources. It’s written for preservationists, retro collectors, and technically minded users who want to create accurate, verifiable Super Nintendo (SNES/Super Famicom) disc/cartridge images for long-term archival and research. redump snes

1. What “Redump SNES” means

• “Redump” generally refers to re‑dumping physical game media to produce accurate, bit‑perfect digital images that can replace or augment incomplete or corrupted archives.
• For SNES, it primarily means creating verified ROM images of cartridges (and Super Nintendo CD formats like Satellaview/Bs Xcii for Japan, though those are separate) with complete ROM data, correct mapping, header info, and preservation of extras (e.g., CIC locks, DSP/FX chips’ data where relevant).
• The goal is preservation, accurate emulation, and reproducible verification across collectors and archives.

Dumping workflow (step-by-step)

1. Clean contacts gently and let dry.
2. Identify cartridge region and board type visually (label, board markings).
3. Connect dumper to PC and update firmware/software to latest stable release.
4. Insert cartridge and perform an initial read using recommended settings for SNES (no header added).
5. Read multiple times (3+) to compare checksums and detect flaky reads.
6. If reads differ, reseat cartridge and clean contacts; try different dumper if available.
7. For carts with enhancement chips, ensure dumper supports dumping those chips; extract associated data (e.g., DSP coefficients, SA-1 CPU data).
8. Save raw dumps and produce checksums for each file.
9. Record metadata: board label(s), PCB revision, sticker serials, region, PCB photos, date/time, dumper model/firmware, read attempts, checksums.
10. Optionally dump and archive box art/manual scans and cartridge photos (front/back/PCB).

1. Dump Your Own Cartridges

Using a Sanni Cart Reader ($100-$150) or Retrode 2, you can dump your personal SNES collection and verify them against Redump’s DAT files using tools like ClrMamePro or RomVault. This is the purest legal method.

Why “Redump SNES” Matters: The Flawed History of SNES ROMs

For nearly two decades after the SNES was discontinued, the ROMs circulating online were often terrible quality. Early dumping tools were imprecise, leading to: Redump SNES: A Community-Driven Effort to Preserve SNES

• Bad dumps – Missing data, crashing at specific points.
• Over-dumps – Extra junk data added during reading.
• Under-dumps – Incomplete game code.
• Intros and trainers – Hacked ROMs with unauthorized splash screens.
• Header issues – Incorrect or missing copier headers (from old floppy disk copiers like the Super Wild Card or Game Doctor).

These flawed ROMs cause glitches, audio stuttering, save corruption, or failure to run on accurate emulators like higan (formerly bsnes) or flash carts like the FXPAK Pro (formerly SD2SNES).

Redump SNES solves this by providing verified, clean, headerless ROMs that match exactly what is on the original mask ROM chips inside the cartridge. Redump Policy: The Redump database generally rejects copier

What is Redump?

First, a quick history lesson. In the early 2000s, ROM sets were a mess. Dumps were done with inaccurate hardware, headers were added incorrectly, and duplicates ran rampant. Enter Redump—a community-driven project dedicated to creating a complete, verified, and accurate database of disc-based games (and later, cartridges).

Their motto is simple: “Correct, verified, and secure dumps.”

For years, Redump focused on CDs (PS1, Saturn, Dreamcast). But the project eventually merged efforts with other preservationists to tackle cartridge-based systems, including the SNES.