TTComp archive

TTComp archive is a compressed file format. It was apparently used by some software installation utilities.

It uses Shannon–Fano coding for data compression. It is probably identical, or nearly identical, to ZIP's obsolete "IMPLODE" compression method.

Though it may be called an "archive" format, it appears to store nothing more than a stream of compressed data.

Sample files

 * http://ftp.serdica.org/.../BITFAX/*.??$

Identification
Most TTComp files begin with bytes.

However, source code suggests that the first byte can be 0 or 1, and the second can be 4, 5, or 6.

Software

 * TTDecomp

Links

 * Wikipedia: Shannon–Fano coding