gtpm1m21 | TPF V4R1 Migration Guide: 3.1 to 4.1 |
In the TPF 4.1 system, the following changes were made to the
real-time trace (RTT) facility:
- The RTT ECB is eliminated. All static data is in the CP CRTT
segment of CCUTIL. A 4 KB common block is used as a trace
buffer. If required, another common block is used for other RTT option
tables.
- All RTT trace code was moved into the control program CRTT segment of
CCUTIL. Start and stop processing code remains in real time
segments.
- The trace control table is eliminated.
RTT uses the new IBMSVC macro to get the address of each SVC entry in the
system SVC table, which contains all trace
control information.
- RTT uses a 4 KB common block as a trace buffer.
- Trace buffers are written to tape using the $TCPLC
COPY=YES CP tape write macro. No SVC or fast link application macros
are issued from the trace code.
- The PTV Phase I macro group is no longer supported.
- RTT does not support the network option for the SLC network and
BSC/ROUTC.
See the TPF Program Development Support Reference
for more information about RTT.