GET_PRN           368 src/dps8/dps8_addrmods.c         word3 n = GET_PRN(IWB_IRODD);  // get PRn
GET_PRN           489 src/dps8/dps8_addrmods.c                 word3 PRn = GET_PRN(IWB_IRODD);
GET_PRN           536 src/dps8/dps8_addrmods.c                     word3 PRn = GET_PRN(IWB_IRODD);
GET_PRN          1164 src/dps8/dps8_append.c                 GET_PRN (IWB_IRODD));
GET_PRN          1851 src/dps8/dps8_ins.c       word3 n = GET_PRN(IWB_IRODD);  // get PRn