NOP              1361 src/dps8/dps8_cpu.h     word1 NOP;        //    10  1   0       Negative overpunch found in 6-4
NOP               714 src/dps8/dps8_ins.c     putbits36_1  (& words[0], 10, cpu.du.NOP);
NOP               770 src/dps8/dps8_ins.c     cpu.du.NOP      = getbits36_1  (words[0], 10);