Romlister: !!top!!

Load and run the program from the MEGA65 menu or the BASIC prompt.

Beyond filtering, RomLister acts as a health check. By comparing your files against the DAT standards, you can identify which files you are missing or which files are corrupted (bad checksum). It turns a folder of mystery files into a verified library.

def export_json(self, filepath, clean_names=False): with open(filepath, 'w', encoding='utf-8') as f: json.dump(self.get_list(clean_names), f, indent=2)

def filter_by_name_pattern(self, pattern, case_sensitive=False): """Keep ROMs whose name matches regex pattern.""" flags = 0 if case_sensitive else re.IGNORECASE regex = re.compile(pattern, flags) self.roms = [r for r in self.roms if regex.search(r.name)] return self romlister

I'll help you develop a feature — a tool that scans a directory of ROM files (for emulators) and outputs a filtered, searchable list based on various criteria (e.g., genre, region, file size, or custom tags).

[ "/home/user/roms/nes/Super Mario Bros (USA).nes", "/home/user/roms/nes/Legend of Zelda (USA).nes" ]

python romlister.py ~/roms/snes -e sfc -r --min-size 1048576 -f json -o snes_large.json Load and run the program from the MEGA65

# romlister.py

Retrocomputing often involves juggling multiple "experimental" or "stable" versions of system ROMs. If you are troubleshooting why a specific application isn't launching or why a core is behaving strangely, Romlister is the first tool you should reach for. It confirms that the system "sees" your files, removing the guesswork from SD card management.

: At only about 2 KB, the program is incredibly lean and efficient. It turns a folder of mystery files into a verified library

lister = RomLister(args.directory, recursive=args.recursive) lister.scan()

: In computing, a ROM (Read-Only Memory) is a type of non-volatile memory used in computers and other electronic devices. A list of ROMs might refer to a catalog or database of ROM chips used in various devices, their specifications, or their contents.