In the headers for ROM BIOS video driver (Int 10H) function calls, the following icons are used:
[MDA] Monochrome Display Adapter
[CGA] Color/Graphics Adapter
[PCjr] PCjr system board video controller
[EGA] Enhanced Graphics Adapter
[MCGA] Multi-Color Graphics Array (PS/2 Models 25 & 30)
[VGA] Video Graphics Array (PS/2 Models 50 and above)
In the remainder of this section, the following icons are used:
[PC] Original IBM PC, PC/XT, and PCjr, unless
otherwise noted.
[AT] PC/AT and PC/XT-286, unless otherwise noted.
[PS/2] All PS/2 models (including Models 25 and 30),
unless otherwise noted.
ROM BIOS functions that are unique to the PC Convertible have been omitted.
Some functions are supported only in very late revisions of a particular machine's ROM BIOS (such as Int 1AH Functions 00H and 01H on the PC/XT). In general, such functions are not given an icon for that machine since a program could not safely assume that they were available based on the machine ID byte(s).