NO_DU             398 src/dps8/dps8.h     NO_DU           = (1U << 0),   // No DU modification allowed (Can these 2 be combined into 1?)
NO_DU             400 src/dps8/dps8.h # define NO_DUDL    (NO_DU | NO_DL)
NO_DU             407 src/dps8/dps8.h # define NO_DLCSS   (NO_DU   | NO_CSS)