ased on what commercial games do, it may be neccessary
to write a 0 before this function works.

<P>To use the old-style reading method, bit 0 of register $4200 must be
clear (probably to prevent conflict between the manual reading and the
SNES' automatic reading.)&nbsp; Like on the NES, two values should be written
before reading starts: a 1 followed by a 0.&nbsp; This "activates a strobe
in the joypad circuitry."&nbsp; Apparently, but not for certain, it is
only necessary to do this with $4016; that is, w