RS_REG           4311 src/dps8/dps8_cpu.c void add_dps8m_DU_OU_history (cpu_state_t * cpup, word36 flags, word18 ICT, word9 RS_REG, word9 flags2)
RS_REG           4315 src/dps8/dps8_cpu.c     w1        |= (RS_REG & MASK9) << 9;
RS_REG           2445 src/dps8/dps8_cpu.h void add_dps8m_DUOU_history (word36 flags, word18 ICT, word9 RS_REG, word9 flags2);