Fixes from Walter Ruetten <walter@ghpc8.ihf.rwth-aachen.de>
to avoid panic()s when we read the PRAM values while ROM
vectors are missing.
rcons (Raster CONSole) brought over here from the sparc area.
sparc device dependencies have been removed, as well as all references
to `struct fbdevice's. Clients need to #include <dev/rcons/rcons.h>.
Remove all rcons related stuff from `fbdevice'; this is now defined in
dev/rcons/rcons.h.
Change interface to th `fb' pseudo device to not need the major device
number (a la sun3).
Put in new glue for rcons.
cgtwo framebuffer, cloned from cgthree.c and sun3's cg2.c.
Note: untested, shall be considered a framework to get things started..
Add the rcons files.
Add cgtwo0.
Remove rcons lines.
Add cgtwo.
These files have moved to sys/dev/rcons.
vmes => vmes0
Change HwCfgFlags4 to something a bit more mnemonic.
Fix qvss/pm compatible ioctl to set colormap entry.
move DEC qvss/pm - compatible (kernel tracks mouse) mouse-input parser
to qvss_compat.c  Move low-level mouse initialization to lk201.c.
Add cdevsw and  bdevsw entries for the machine-independent sd and st drivers.
Add cdevsw and bdevsw entries for the old-pmax tz SCSI tape driver, and
add a do-nothing definition of the requisite tzdump().
Update files.pmax to use Ted Lemon's port of the sparc rcons glass-tty fb
driver, the "generic" fb pseudo-device driver, and dev/cons.c.
Update an example new-config file (NEWCONF) to use them.
Optimize the via interrupt processing routines a tad.  From
chas@ohm.nrl.navy.mil (Charles J. Williams).
Fix a spelling slight.  Grab the faulting address if nofault in bus error.
Do not define MIN_PHYS here--it is m.d..
Correct jClkNoMem address for C650 from
nick@csua.berkeley.edu via Walter Ruetten.
Fixed RELOC's to be hex numbers (as expected) rather than decimal.
(e.g. s/340000/0x340000/).   Fixes DVMA panic on my sun-4/280 when
booted diskless.