RTRR             3997 src/dps8/dps8_cpu.c void add_dps8m_APU_history (word15 ESN, word21 flags, word24 RMA, word3 RTRR, word9 flags2)
RTRR             4003 src/dps8/dps8_cpu.c     w1        |= (RTRR & MASK3) << 9;
RTRR             2374 src/dps8/dps8_cpu.h void add_dps8m_APU_history (word15 ESN, word21 flags, word24 RMA, word3 RTRR, word9 flags2);