Extended Graphics Array

Video standard released in 1990 by IBM in order to replace their 8514/A standard. It keeps the same resolution as 8514/A (1024x768) but brings non-interlaced scanning ("progressive scanning") and it is a stand-alone board (8514/A needed an extra VGA board in order to work).

IBM launched XGA board for PS/2 computers using 32-bit MCA bus (it could be installed on 16-bit MCA bus, but achieving a lower performance). The board came with 512 KB VRAM video memory and could show up to 16 simultaneous colors. If the user upgraded it to 1 MB, it could show up to 256 simultaneous colors.

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