X11R3 fails on Sun386i, mmap: no such address or device

[Brad Clements]

Hi,

I'm trying to get X11R3 to run under Sun OS 4.0.1 on a Sun 386i w/
standard monochrome monitor. The Xsun server fails with

	mapping BW2 : No such address or Device

Suntools works fine, and the system startup reports
	bwtwo0: resolution 1024 x 768

Apparently the mmap call in   server/ddx/sun/sunBW2.c fails

The documentation in the sun manual about mmap says that either the fd
doesn't refer to a mappable device (but it really does) or the MAP_REMAP
option was specified and the device doesn't support it.  (MAP_REMAP isn't
specified, but _MAP_NEW is)

The only thing I can think of is that the len parameter is the wrong size
in the mmap call.  In /usr/include/sundev/bw2reg.h  the frame buffer size
appears to be mapped as BW2_FBSIZE_HIRES even though it really isn't a
hires device.

Has anyone gotten this to work under sun386i and how did you do it?

Thanks

Brad Clements
Network Engineer
Clarkson University