xnews cursor, video retrace, gx doc

[wsd at cs.brown.edu]

I have three questions about the SS1GX, all graphical.

1)  xnews uses the GX's hardware cursor.  After one quits, however, the
cursor is left on the screen, and nothing I do will remove it.  (short of
starting up xnews and making it invisible, but we all know how long it
takes to start up xnews...)  How can I clear the cursor?  There must be an
ioctl() or something simple.

2)  I often do double buffered animation on the GX by diddling the look-up
tables.  Unfortunately, I don't know how to synchronize my flipping the
buffer with the vertical retrace to eliminate flicker.  Does the SS1 have
an interrupt that I can access?  I tried the Pixrect double buffering
calls, but they don't do anything (because there is no *real* db on the
machine I guess)

3)  The bottom line:  Is there *any* documentation for the GX board?  A
recent article in _Sun_Tech_ describes many fantastic features, none of
which are supported by any Sun software that I know of.  Even the most
meager doc or examples would be greatly appreciated.