MASK21           4001 src/dps8/dps8_cpu.c     w0        |= flags & MASK21;
MASK21            734 src/dps8/dps8_disk.c     seekData &= MASK21;
MASK21            776 src/dps8/dps8_disk.c     seekData &= MASK21;
MASK21            826 src/dps8/dps8_disk.c     seekData &= MASK21;
MASK21           2481 src/dps8/dps8_eis.c     word21 r = getCrAR (reg) & MASK21;;
MASK21           2779 src/dps8/dps8_eis.c       r = (uint) (rcnt & MASK21);
MASK21           2781 src/dps8/dps8_eis.c       r = (uint) (rcnt & MASK21);
MASK21            254 src/dps8/dps8_hw_consts.h     return w & MASK21;
MASK21            299 src/dps8/dps8_hw_consts.h     return w & MASK21;