&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 110,111&nbsp; Unknown behavior</PRE>
This register selects the location in VRAM where the character data is
stored, and the size of sprites on the screen.&nbsp; The byte location
of the character data can be found by shifting the b (base selection) bits
left by 14.&nbsp; Note that this allows only four different locations in
VRAM to put the sprite data; the high bit of the base selection should
always be zero since only 64K of VRAM can