ZCA              4370 src/dps8/dps8_cpu.c void add_dps8m_EAPU_history (word18 ZCA, word18 opcode)
ZCA              4373 src/dps8/dps8_cpu.c     w0        |= (ZCA & MASK18) << 18;
ZCA              2406 src/dps8/dps8_cpu.h void add_dps8m_EAPU_history (word18 ZCA, word18 opcode);