L68_DU_HIST_REG  4176 src/dps8/dps8_cpu.c     PNL (add_history (L68_DU_HIST_REG, cpu.du.cycle1, cpu.du.cycle2);)
L68_DU_HIST_REG  7376 src/dps8/dps8_ins.c                     uint reg = cpu.tweaks.l68_mode ? L68_DU_HIST_REG : DPS8M_EAPU_HIST_REG;