OS/2 bitmap family

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File Format
Name OS/2 bitmap family
Ontology
Extension(s) .bmp, .pm, .bga
PRONOM fmt/115, x-fmt/270

IBM OS/2 BMP (also known as Presentation Manager Bitmap or PM Bitmap) is a family of raster graphics formats used on OS/2. It is closely related to Windows BMP.

The term OS/2 BMP can refer just to the "bitmap" formats (files with a signature of "BM"), or to the family of formats that also includes specialized icon and pointer formats.

There are two major versions of the bitmap format: OS/2 BMP 1.0, and OS/2 BMP 2.0. For details, refer to BMP.

For details about the icon format, see OS/2 Icon.

For details about the pointer format, see OS/2 Pointer.

Contents

Format

All file begin with a 14-byte "file header", of which the first two bytes are an ASCII signature indicating the file type.

Signature Image type Notes
BA Bitmap Array BA format is a kind of container format for one or more images in the other formats (often used with CI format).
BM Bitmap Refer to BMP for more information.
CI Color Icon Refer to OS/2 Icon.
CP Color Pointer Refer to OS/2 Pointer.
IC Icon Refer to OS/2 Icon.
PT Pointer Refer to OS/2 Pointer.

Specifications

Sample files

BM (1.0)

BM (2.0)

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