🚀 go-pugleaf

     Chapter seven of my hardware manual discusses 'system control hardware'.
In there it discusses sprite priorities.  The eight sprites are broken up into
four sets of two.  The priority control register can be set though that each
playfield (or the playfield if you aren't using dual playfield mode) can be
either in front of all eight, in front of six, in front of four, in front of
two, or behind all.  The sprites are always in the same order.

.Bruce.