Most common file types at /pub/cbm/

We use the following archiving formats. Search the converters subdirectory for appropriate utilities to extract the content from some of these.

File naming patterns and types
Pattern Format Contents Tools
n!file ZipCoded 1541 disk image (n=1–4) RLE compressed normal 1541 disk tracks cbmconvert and others
n!!file ZipCode Sixpack of nonstandard 1541 disk image (n=1–6) RLE compressed raw GCR 1541 disk tracks cbmconvert and others
file.arc Archive (C64) A compressed collection of Commodore files cbmconvert
file.ark Arkive archive (C64) An uncompressed collection of Commodore files cbmconvert
file.bin Raw binary file The contents of an EPROM or ROM chip
file.cas Tape image of a single file (192-byte tape header followed by raw data) Commodore tape program file cbmconvert, c2n, MESS
file.csm Tape image of a multiple file (192-byte tape header blocks and variable-length program blocks following each other) Commodore tape program file cbmconvert, c2n, MESS
file.cvt Sequential conversion of a GEOS file GEOS application or document cbmconvert and Convert on GEOS
file.d64 1541 disk image (683 blocks of 256 bytes each) A collection of Commodore files cbmconvert, many emulators and data transfer programs
file.gif Bitmapped image Usually a technical drawing an image viewer program with GIF support
file.gz gzip compressed file Usually combined with an uncompressed archiving format, such as .d64, .lnx or .tar. gzip, WinRAR; Microsoft Internet Explorer may decompress these files while downloading without removing the .gz suffix. WinZip refuses to work with such files; you will have to remove the .gz suffix manually.
file.html Hypertext mark-up language (World Wide Web Consortium) A hypertext document Mozilla or other HTML browser
file.jpg Bitmapped continuous-tone image (Joint Photographic Experts Group) A technical drawing or a photograph an image viewer program with JPEG image file support
file.lnx Lynx archive (C64, C128) An uncompressed collection of Commodore files Supported by cbmconvert
file.lha Lempel–Ziv–Huffman archive A compressed collection of files. lha, WinRAR
file.lzh Lempel–Ziv–Huffman archive; an old version of .lha A compressed collection of files. Uncompress with lhx64 on the Commodore 64; on the Commodore 128, with CS-DOS or PMARC on CP/M.
file.png Bitmapped image (Portable Network Graphics) Usually a technical drawing an image viewer program with PNG support
file.prg 2-byte address followed by raw data Commodore program file
file.pdf Adobe Portable Document Format A page-oriented alternative to .html xpdf, Adobe Acrobat Reader
file.seq Raw sequential data Commodore sequential data file
file.sda Self Dissolving .arc archive with a .prg header A compressed collection of files To extract the contained files, load and run the archive on a Commodore 64.
file.sfx Self eXtracting .lzh archive with a .prg header A compressed collection of files To extract the contained files, load and run the archive on a Commodore 64 or a Commodore 128. Alternatively, remove the first 3721 bytes to obtain a .lzh file.
file.tar Unix tape archive (tar) An uncompressed collection of Unix files tar on Unix systems, WinRAR
file.txt Plain ISO 8859-1 text A plain text document a text file editor or viewer
file.zip A zip archive A compressed collection of files Info-Zip, WinRAR

Marko Mäkelä

[Valid XHTML 1.0!][Valid CSS!]