Editing Video Graphics Array (section)

==== {{resx|640x480}} graphics mode ====
The {{resx|640x480}} resolution (at 256 colors rather than 16) was originally used by IBM in [[Professional Graphics Controller|PGC]] graphics (which VGA offers no backward compatibility for) but did not see wide adoption until VGA was introduced. As the VGA began to be cloned in great quantities by manufacturers who added ever-increasing capabilities, its {{resx|640x480}}, 16-color mode became the de facto lowest common denominator of graphics cards. By the mid 1990s, a {{resx|640x480}}×16 graphics mode using the VGA memory and register specifications was expected by operating systems such as [[Windows 95]] and [[OS/2 Warp 3|OS/2 Warp 3.0]], which provided no support for lower resolutions or bit depths, or support for other memory or register layouts without additional drivers. Well into the 2000s, even after the [[VESA]] standard for graphics cards became commonplace, the "VGA" graphics mode remained a compatibility option for PC operating systems.