I recently enabed in rc.conf the screenblanking "screenblank=YES". While it
boots, displays an error, simething like "no framebuffer device". I think
this could be the problem, why Xhpc doesn't start (actualy generating
"segmentation fault").

Do someone know, how to enable frambuffer? besides in kernel loading/booting
it writes out that the frambuffer addres is somewhere at 0xaa220000 if I
remember well...

(I have a binary distribution of the 1.6 hpcmips kernel, downloaded from
FTP. Should I try to configure it myself, to fitt to my Casio Cassiopeia
E-100, to create that framebuffer?)