unsegaREBORN

SEGA arcade image toolkit

features

• APP/PACK and OPT (including APM3 type)
• NTFS and exFAT
• VHD (fixed, dynamic, differencing)
• direct stream from encrypted image
• timestamps
• AES-NI hardware acceleration

build

build.cmd          # windows
sh build.cmd       # linux

output: build/unsegareborn-{platform}-x64[.exe]

usage

unsegareborn [flags] <files>

flags:

• -o dir output directory
• -n decrypt only, skip extraction
• -w write intermediate .ntfs/.exfat files
• -p file parent for differencing VHD
• -k keep all versions (each delta gets its own folder instead of stacking)
• -s silent
• -v verbose
• -vn version
• -h available flags

deltas (differencing VHD)

base + update files are stacked into a single output by order.

unsegareborn -o out -p BASE DELTA1 DELTA2

result: out/DELTA2/ with merged content (base + all updates applied in order)

drag and drop

drag and drop is available on windows. multiple files are handled automatically.

keys

prebuilt releases include keys. source does not.

to build from source:

1. copy include/keys.inc.example to include/keys.inc
2. add your keys in the format shown

format:

{"SDEZ", {0xd1,0x36,...}},

platforms

platform	method
win x64	native (ntdll only)
win arm64	x64 emulation
linux x64	native (static no libc)
linux arm64	box64/qemu
macos	wine (untested)

release

build generates a version tag automatically (YYYYMMDDNN, revision increments per day):

sh build.cmd        # or build.cmd on windows
git tag $(./build/unsegareborn-* -vn | awk '{print $2}')
git push origin --tags

ci builds both platforms and creates a github release with binaries

license

UNLICENSE