devpow112 / sgcc

:wrench: A Sega Genesis ROM checksum corrector

SGCC (Sega Genesis Checksum Corrector)

A Sega Genesis ROM checksum corrector.

Prerequisites

• Python

Usage

Script can be run on any platform that can run Python. By default the ROM file will not be changed and it will create a new file with _cc appended to the filename. You can supply either -i or --in-place to have it modify the ROM in-place or supply -s or --suffix to change the default appended suffix to something else.

usage: [python] sgcc.py [-h] [-i] [-s SUFFIX] path

Compares and corrects the checksum for a Sega Genesis ROM.

positional arguments:
  path                  Relative path to the Sega Genesis ROM file.

optional arguments:
  -h, --help            show this help message and exit
  -i, --in-place        Make header change in-place, otherwise make another file
  -s SUFFIX, --suffix SUFFIX
                        Custom suffix to use when not doing in-place fixing