NAME

cg − Sun color graphics interface

DESCRIPTION

The cg interface provides access to the Sun workstation color graphics controller board.  The host’s address is discovered at boot time by probing the Multibus address space. 

The hardware consumes 16 kilobytes of Multibus memory space.  The board starts at standard addresses 0xE8000 or 0xEC000.  The board must be configured for interrupt level 3. 

The major device number is 14; the minor device number is the board number. 

Reading or writing to the color board is not allowed — you must use the mmap(2) system call to map the board into your address space.

Sun System Release 0.3  —  2 May 1983