As of September, 1989, neither we or Canon knew of any Macintosh printer or
scanner drivers for the Canon Color Laser 500.
The General Purpose Interface Bus (GPIB) interface is defined by ANSI/IEEE
Standard 488-1978. It is often referred to as the IEEE-488 bus, which is also
synonymous with HP-IB. The GPIB is an 8-bit, parallel, digital bus with full
handshake and interface management capabilities. It has been widely used for
interfacing programmable instruments with computers.
You have many GPIB interfaces available to choose from for the Macintosh,
whether it be for a Macintosh Plus, Macintosh IIcx, and so on. Refer to any of
the Macintosh buyer's guides for a listing of your options.