| CGFOUR(4) | Kernel Interfaces Manual (SPARC) | CGFOUR(4) | 
NAME
 cgfour — Sun 8-bit color frame buffer
SYNOPSIS
 cgfour0 at obio0 addr 0xfb300000 level 4 (sun4/300)
cgfour0 at obio0 addr 0x0b300000 level 4 (sun4/100)
DESCRIPTION
 The 
cgfour is a memory based color frame buffer with overlay plane. Its pixel memory and control planes can be mapped into a user process address space by using the 
mmap(2) system call. The 
cgfour driver supports the minimal ioctl's needed to run 
X(1).