BIT70             449 src/dps8/dps8_math.c #  define HEX_SIGN (SIGN72 | BIT71 | BIT70 | BIT69)
BIT70             450 src/dps8/dps8_math.c #  define HEX_MSB  (         BIT71 | BIT70 | BIT69)
BIT70             451 src/dps8/dps8_math.c #  define HEX_NORM (         BIT71 | BIT70 | BIT69 | BIT68)