Keep the untouched source outside the live game/emulator save directory.
Additional formats / Format hub
Dreamcast VMU / VMS Save Formats tools & compatibility
Dreamcast Visual Memory Unit flash images and the specifically documented Nexus DCM and VMI metadata representations. SaveEditor treats fixed filesystem/root constants as evidence only and does not synthesize CRCs, FAT chains, directory entries, allocation state, or game payload bytes.
01 / Format context
Confirm the container and the profile.
SaveEditor separates wrapper recognition from semantic compatibility. Before processing a file, confirm the game or emulator, platform, version, expected size, and integrity rules described by the Tool itself.
Choose only a Tool whose support notes name the same format/profile.
File-size, encryption, signing, account, and browser-local limits still apply.
02 / Active tools
Dreamcast VMU / VMS Save Formats tools with explicit support state
Planned and deprecated Tool records are excluded. Phase 43 cannot make an existing Tool verified or operational.
Verified
File Analysis
Dreamcast DCM VMU Layout Inspector
Report the normalized VMU system-block layout inside a strictly validated 128 KiB DCM image.
Verified
File Analysis
Dreamcast DCM Directory Inventory
Inventory validated VMU directory records after deterministic DCM byte-order normalization.
Verified
File Analysis
Dreamcast DCM Filesystem Consistency Auditor
Validate the normalized VMU root, FAT and directory structures without rewriting the DCM source.
Verified
File Analysis
Dreamcast VMI Resource Checksum Inspector
Recompute and report the fixed four-byte VMI resource-name checksum relation from a strict 108-byte record.
Verified
File Analysis
Dreamcast VMI Timestamp Inspector
Read the validated creation date/time fields from an exact 108-byte VMI metadata record.
Verified
File Analysis
Dreamcast VMI Resource Name Inspector
Read the validated NUL-padded eight-byte VMI resource-name field.
Verified
File Analysis
Dreamcast VMI Filename Inspector
Read the validated NUL-padded twelve-byte VMI filename field.
Verified
File Analysis
Dreamcast VMI Mode Inspector
Decode the bounded VMI mode bits and reserved-field predicate without altering metadata.
Verified
File Analysis
Dreamcast VMI File Size Inspector
Report the non-zero bounded VMI declared file size from a strict 108-byte record.
Verified
File Analysis
Dreamcast VMU Directory Chain Inspector
Follow the validated 13-block VMU directory chain starting at block 253 and report its termination.
Verified
File Analysis
Dreamcast VMU Directory Inventory
Inventory validated 32-byte VMU directory records, filenames, block counts and first-block pointers.
Verified
File Analysis
Dreamcast VMU File Type Inventory
Count documented VMU data-file and game-file directory markers after filesystem validation.