<architecture> (MCA) IBM's proprietary 32-bit bus, used in
high-end PS/2 personal computers. Micro Channel is
designed for multiprocessing. It eliminates potential
conflicts that arise when installing new peripheral devices.
MCA is *not* compatible with either EISA or XT bus
architecture so older cards cannot be used with it.
As with the ROM BIOS in the first IBM PCs, figuring out
the Micro Channel's secrets has been an arduous task of
reverse engineering ever since the PS/2 line was announced.
Consequently, the MCA has never become as wide spread as the
competing EISA standard.
