OS/2 Bitmap Array

File Format
Name	OS/2 Bitmap Array
Ontology	Electronic File Formats Graphics OS/2 Bitmap Array
Extension(s)	.bga, .bmp, .ico

OS/2 bitmap array (also called Bitmap Graphics Array or BGA) is a container format for one or more images in (OS/2-style) BMP, OS/2 Icon, and/or OS/2 Pointer format.

BGA files are sometimes embedded as resources in OS/2 Linear Executable files. OS/2 Icon files often use the BGA container format.

Identification

A BGA file begins with ASCII "BA". At offset 14 is the type signature of the first image in the file, which will be "BM", "CI", "IC", "CP", or "PT".

Specifications

• OS/2 Presentation Manager Programming Reference Guide, Vol III

Software

• Deark can extract the contents of BGA files

Sample files

• dexvert samples — archive/os2BitmapArray

BA/BM

• CARDBMPS.ZIP → 9S.BMP, DIAMOND.BMP, HEART.BMP, MASK.BMP, SPADE.BMP
• MEMSZ128.ZIP → MEMSIZE.BMP

BA/CI

• Refer to OS/2 Icon#Sample files.