ICE (executable compression)

File Format
Name	ICE (executable compression)
Ontology	Electronic File Formats Compression Executable compression ICE (executable compression)
Released	1988

ICE is an executable compression and obfuscation utility for DOS, developed by Keith P. Graham. It only supports .COM files.

The documentation implies that ICE stands for Intrusion Countermeasure Electronics.

Identification

ICE-compressed files start with bytes eb 0a, and have be 26 01 8b fe 8b 0e 08 01 8b 16 02 01 b8 77 01 at offset 12.

See also

• DSQ (disk image) - Same author
• FMAC2COM - Same author
• OPTIKS - Same author
  • OPTIKS COM image
  • PCR font
  • PCR image
• TXT2COM (Keith P. Graham) - Same author

Software

• ICE v1.00 [1988-03-06; ICE.COM file starts with bytes eb 0a d3 b1]
• ICE101.ZIP [1988-04-21; ICE.COM file starts with bytes eb 0a 81 2f] - A slightly different version of ICE. May or may not be legitimate.
• DEICE (decompressor): Copy of De Trans Software website → Download → DOS → "DEICE"

Sample files

• DSQ300.ZIP → DSQ.COM