ATAPI extends the ATA/IDE disk interface to support packets which can share the bus with hard drives. ATAPI replaced a collection of proprietary interfaces. Although ATAPI is compatible with IDE electronics, some pre-1996 IDE controllers/BIOSes can not recognize an ATAPI device. As a rule of thumb, most BIOSes that support LBA/CHS for disk drives also support ATAPI. Some other BIOSes may work. For example, AMI BIOSes as early as July 1994 are reported to support ATAPI.
ATAPI is an ANSI standard supported by the X3T13 committee.
Return To Index Copyright 1994-2008 by Donald Kenney.