Branch on result plus

Take a conditional branch if the N bit is reset (clear/0)

Table

BPL | Branch on Result Plus
================================================

                                 N V - B D I Z C
                                 - - - - - - - -

addressing       assembler    opc  bytes  cycles
------------------------------------------------
relative         BPL $nnnn    10     2     2 tp

p: +1 if page is crossed
t: +1 if branch is taken