Disk Masher System
From Just Solve the File Format Problem
DMS (Disk Masher System) is a compressed disk image format used on Amiga computers.
Contents |
Compression methods
| ID | Name | Description and remarks |
|---|---|---|
| 0 | No compression | |
| 1 | Simple | RLE |
| 2 | Quick | RLE + {LZ77 with 256-byte window} |
| 3 | Medium | RLE + {LZ77 with 16K window} |
| 4 | Deep | RLE + {LZ77 with adaptive Huffman coding} |
| 5 | Heavy1 | Like Heavy2, with 4K window |
| 6 | Heavy2 | {Optional RLE} + {LZ77 with static Huffman coding, 8K window (similar to LHA's "lh5" method)} |
| 7–9 | Heavy3–5? | Reserved? |
Identification
Files begin with ASCII characters "DMS!".
Format info
Sample files
Software
- xDMS (portable C source, partially public domain)
- dms111 (Original Amiga software)
- Ancient (decompresses to ADF)
- The Unarchiver
