MDCD

File Format
Name	MDCD
Ontology	Electronic File Formats Archiving MDCD
Extension(s)	.md, .cd, others
Released	1988

MDCD is a compressed archiving utility, and its associated native file format. It was developed by Mike Davenport.

It was apparently used in some capacity by the Links 386 Pro video game.

Format details

The compression scheme is LZW with an 8K table, possibly identical to that used by Zoo. The CRC algorithm is CRC-16/XMODEM.

Identifiers

The default filename extension is .md, though some of the example commands inexplicably use .cd instead.

Identification

Files begin with the ASCII signature "MDmd".

Specifications

• For information about the header format, see the source code, MDCD.PAS, look for "FileHeader = Record".

Software

• MDCD v1.0 - DOS binary + source code
• Deark

Sample files

• https://telparia.com/fileFormatSamples/archive/mdcd/
• lcd95.zip → CDGRAPHI.LZ
• links108.zip → *.TIL