Interleaved Bitmap
Sign in to saveAlso known as ILBM, .iff, .lbm, IFF-ILBM, LBM, Amiga IFF, IFF Interleaved Bitmap, Amiga ILBM
Interleaved Bitmap (ILBM) is an image file format conforming to the Interchange File Format (IFF) standard. The format originated on the Amiga platform, and on IBM-compatible systems, files in this format or the related PBM (Planar Bitmap) format are typically encountered in games from late 1980s and early 1990s that were either Amiga ports or had their graphical assets designed on Amiga machines.
Wikidata facts
Show 4 more facts
- described at URL
- home.comcast.net/~erniew/lwsdk/docs/filefmts/ilbm.html
- file extension
- pic
- publication date
- 1985-01-14
- media type
- image/x-ilbm
via Wikidata · CC0
~17 min read
Article
21 sectionsContents
- File format
- BMHD: Bitmap header
- BODY: Image data
- Compression
- CAMG: Amiga mode
- CMAP: Palette
- CRNG: Colour range
- CCRT: Colour cycling
- DEST: Bitplane combining
- GRAB: Hotspot
- SPRT: Z-order
- TINY: Thumbnail
- Notes for working with ILBM
- Color maps
- Deep images
- Extra Half-Brite
- Hold and modify
- Utilities
- See also
- References
- External links
Interleaved Bitmap (ILBM) is an image file format conforming to the Interchange File Format (IFF) standard. The format originated on the Amiga platform, and on IBM-compatible systems, files in this format or the related PBM (Planar Bitmap) format are typically encountered in games from late 1980s and early 1990s that were either Amiga ports or had their graphical assets designed on Amiga machines.
A characteristic feature of the format is that it stores bitmaps in the form of interleaved bit planes, which gives the format its name; this reflects the way the Amiga graphics hardware natively reads graphics data from memory. PackBits, a simple form of compression is supported to make ILBM files more compact.