Industry Standard Architecture - The bus used in standard IBM-compatible PCs to provide power to add-in boards and communication between the add-in boards and to the motherboard.
EETimes.com - Intel musters tiger team to stomp out the ISA bus, article from 8/19/98.
Ugeek.com - PC98 spec calls for end of ISA bus, requires FireWire, tech update.
ISABUS Pinout - Source: IBM PC/AT technical reference.