+jdn | A,B,l | Jump if diff is < 0, no carry | if(nc(A-B)<0) PC=l
+jdpz | A,B,l | Jump if diff is >= 0, no carry | if(nc(A-B)>=0) PC=l
+jdp | A,B,l | Jump if diff is > 0, no carry | if(nc(A-B)>0) PC=l
+jdnz | A,B,l | Jump if diff is <= 0, no carry | if(nc(A-B)<=0) PC=l