The CPU contains a free running 64-bit counter that advances each CPU clock under normal operation. The counter is accessed as two 32-bit read-only control registers, TSCL (Figure 8-52) and TSCH (Figure 8-53).
Figure 8-52 Time Stamp Counter Register - Low Half (TSCL) | CPU clock count (32 LSBs of 64-bit value) |
| LEGEND: R = Readable by the MVC instruction; -n = value after reset |
Figure 8-53 Time Stamp Counter Register - High Half (TSCH) | CPU clock count (32 MSBs of 64-bit value) |
| LEGEND: R = Readable by the MVC instruction; -n = value after reset |