NAME

bwone − Sun-1 black and white frame buffer

SYNOPSIS — SUN-2

device bwone0 at mbmem ? csr 0xc0000 priority 3

DESCRIPTION

The bwone interface provides access to Sun-1 black and white graphics controller boards.  It supports the FBIOGTYPE ioctl which programs can use to determine the characteristics of the display device; see fbio(4S).

bwone also  supports the FBIOGPIXRECT ioctl which allows SunWindows to be run on it; see fbio(4S).

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

FILES

/dev/bwone[0-9]

SEE ALSO

mmap(2), fb(4S), fbio(4S)

BUGS

Use of vertical-retrace interrupts is not supported. 

The FBVIDEO_ON value returned by the FBIOGVIDEO ioctl may be incorrect.  See fbio(4S).

Sun Release 3.2  —  Last change: 25 July 1986