MASK27            968 src/dps8/dps8_cpu.c     cpu.rTR      = MASK27;
MASK27           2501 src/dps8/dps8_cpu.c                     cpu.shadowTR = (cpu.shadowTR - 1) & MASK27;
MASK27           2533 src/dps8/dps8_cpu.c         if (cpu.rTR & ~MASK27)
MASK27           2535 src/dps8/dps8_cpu.c             cpu.rTR &= MASK27;
MASK27           3071 src/dps8/dps8_cpu.c                       cpu.rTR = (cpu.rTR - ticks) & MASK27;
MASK27           3074 src/dps8/dps8_cpu.c                     cpu.rTR = (cpu.rTR - ticks) & MASK27;
MASK27           3077 src/dps8/dps8_cpu.c                     cpu.rTR = MASK27;
MASK27           3106 src/dps8/dps8_cpu.c                       cpu.rTR = MASK27;
MASK27           3146 src/dps8/dps8_cpu.c                       cpu.rTR = (cpu.rTR - sys_opts.sys_poll_interval * 512) & MASK27;
MASK27           3149 src/dps8/dps8_cpu.c                     cpu.rTR = (cpu.rTR - sys_opts.sys_poll_interval * 512) & MASK27;
MASK27           3151 src/dps8/dps8_cpu.c                     cpu.rTR = MASK27;
MASK27           3837 src/dps8/dps8_ins.c             cpu.Yblock8[7] = (((-- cpu.shadowTR) & MASK27) << 9) | (cpu.rRALR & 07);
MASK27           3839 src/dps8/dps8_ins.c             cpu.Yblock8[7] = ((cpu.rTR & MASK27) << 9) | (cpu.rRALR & 07);
MASK27           4037 src/dps8/dps8_ins.c             cpu.CY = (((uint) (((int) cpu.shadowTR) - 1)) & MASK27) << 9;
MASK27           4039 src/dps8/dps8_ins.c             cpu.CY = (cpu.rTR & MASK27) << 9;
MASK27           7553 src/dps8/dps8_ins.c           cpu.rTR = (cpu.CY >> 9) & MASK27;
MASK27           2031 src/dps8/dps8_utils.c 
MASK27           2044 src/dps8/dps8_utils.c 
MASK27           2048 src/dps8/dps8_utils.c