Agnus/
                  Read/   Denise/
Register Address  Write   Paula         Function
-------- -------  -----   -------       --------
COP1LCH    080      W      A( e ) copper first location register
                                      (high 3 bits, high 5 bits if ECS)
COP1LCL    082      W       A     Copper first location register
                                      (low 15 bits)
COP2LCH    084      W      A( e ) copper second location register
                                      (high 3 bits, high 5 bits if ECS)
COP2LCL    086      W       A     Copper second location register
                                      (low 15 bits)

                 These registers contain the jump addresses
                 described above.