Debug Manual

Debug Commands
Debug Manual—421921-003
4-65
PRV Command
•
If the name you specify for output-dev happens to match a register name, a
syntax error might result. To avoid any possibility of ambiguity, include the keyword
OUT before output-dev, which informs Debug that the name refers to an output
device. For example, suppose a printer is named $S1, which is also the name of a
TNS/R register. Specifying OUT $S1 on the PMAP command tells Debug that $S1
is an output device.
PMAP Display Format
The PMAP command displays the specified address area in TNS instruction code
followed by RISC instruction code. These conventions apply to the display:
•
RISC addresses are represented in hexadecimal.
•
TNS addresses are represented in octal.
•
A commercial at sign (@) marks a register-exact point.
•
A greater-than sign (>) marks a memory-exact point.
Register-exact and memory-exact points are the TNS P register values on which you
can set breakpoints. For more information on these points, see Section 2, Using Debug
on TNS/R Processors.
Examples
For examples that use the PMAP command, see Appendix F, Sample Debug
Sessions.
PRV Command
The PRV command enables or disables privileged debugging commands.The form of
the PRV command is:
ON
specifies that privileged debugging commands be enabled.
OFF
specifies that privileged debugging commands be disabled.
If you do not specify either ON or OFF, ON is the default.
PRV [ ON | OFF ]
Caution. Use privileged commands with extreme caution, because they allow you to perform
operations that could halt the system.