MASK27            951 src/dps8/dps8_cpu.c     cpu.rTR      = MASK27;
MASK27           2333 src/dps8/dps8_cpu.c                     cpu.shadowTR = (cpu.shadowTR - 1) & MASK27;
MASK27           2365 src/dps8/dps8_cpu.c         if (cpu.rTR & ~MASK27)
MASK27           2367 src/dps8/dps8_cpu.c             cpu.rTR &= MASK27;
MASK27           2901 src/dps8/dps8_cpu.c                       cpu.rTR = (cpu.rTR - ticks) & MASK27;
MASK27           2904 src/dps8/dps8_cpu.c                     cpu.rTR = (cpu.rTR - ticks) & MASK27;
MASK27           2907 src/dps8/dps8_cpu.c                     cpu.rTR = MASK27;
MASK27           2936 src/dps8/dps8_cpu.c                       cpu.rTR = MASK27;
MASK27           2976 src/dps8/dps8_cpu.c                       cpu.rTR = (cpu.rTR - sys_opts.sys_poll_interval * 512) & MASK27;
MASK27           2979 src/dps8/dps8_cpu.c                     cpu.rTR = (cpu.rTR - sys_opts.sys_poll_interval * 512) & MASK27;
MASK27           2981 src/dps8/dps8_cpu.c                     cpu.rTR = MASK27;
MASK27           3695 src/dps8/dps8_ins.c             cpu.Yblock8[7] = (((-- cpu.shadowTR) & MASK27) << 9) | (cpu.rRALR & 07);
MASK27           3697 src/dps8/dps8_ins.c             cpu.Yblock8[7] = ((cpu.rTR & MASK27) << 9) | (cpu.rRALR & 07);
MASK27           3895 src/dps8/dps8_ins.c             cpu.CY = (((uint) (((int) cpu.shadowTR) - 1)) & MASK27) << 9;
MASK27           3897 src/dps8/dps8_ins.c             cpu.CY = (cpu.rTR & MASK27) << 9;
MASK27           7222 src/dps8/dps8_ins.c           cpu.rTR = (cpu.CY >> 9) & MASK27;
MASK27           2007 src/dps8/dps8_utils.c 
MASK27           2020 src/dps8/dps8_utils.c 
MASK27           2024 src/dps8/dps8_utils.c