RS_REG           3988 src/dps8/dps8_cpu.c void add_dps8m_DU_OU_history (word36 flags, word18 ICT, word9 RS_REG, word9 flags2)
RS_REG           3992 src/dps8/dps8_cpu.c     w1        |= (RS_REG & MASK9) << 9;
RS_REG           2373 src/dps8/dps8_cpu.h void add_dps8m_DUOU_history (word36 flags, word18 ICT, word9 RS_REG, word9 flags2);