Command line Status line

Each of these areas is described in more detail in the following sections.

4.2.1 Window Title

The default window title is a string consisting of the following information:

“LPARNAME SYSTYPE * SYSNAME * SYSPLEX System Status: colour”

LPARNAME is the value taken from the correspondent system parameter or console command. SYS-
TYPE, SYSNAME and SYSPLEX are populated by the system call SCLP Control Program Identification.
If any of these values is blank, then that field is not presented in the window title. The system status can
either be green, amber or red and has the following meanings:

GREEN Everything is working correctly. AMBER One or more CPUs are not running. RED One or more CPUs are in wait state.

Figure 2: Console Panel - Window Title

The title of the Hercules window can be customized through the PANTITLE system parameter or console
command. To create the window title shown in the figure above the following PANTITLE system para-
meter was used:

PANTITLE "Hercules Emulator HMC - MVS V3.8J"

The window title can also dynamically be changed through the PANTITLE console command which looks
the same as the system parameter shown above.

4.2.2 Log Area

The log area displays Hercules’ log output. This output can also be written to a log file, if requested. In the
log area all Hercules messages are displayed, as well as every command entered and the response re-
turned from Hercules.

This area may also show the system console output of the operating system running under Hercules, if
there is no system console defined in the configuration file and the operating system console output is
routed to the Hercules console instead.

Figure 3: Console Panel Log Area

The amount of messages that are written to the log is customizable. Using the OSTAILOR system para-
meter or console command, messages that are considered normal for the type of operating system you
are running can be suppressed.

The additional PGMTRACE console command allows further to fine tune the tracing of program interrupt
exceptions that are displayed on the console. Finally the MSGLVL system parameter or console com-
mand can be used to set the level of displayed messages.

Error messages are displayed in red and are held at the top of the log window until they are cleared with
a MSGHLD CLEAR or KD console command or the timeout for held messages expires. The default time-
out value for held messages is two minutes and can be set or changed through the MSGHLD system pa-
rameter or console command.

4.2.3 Command Line

At the bottom of the log area is the command line (“herc =====>”). Here you can enter Hercules console
commands or SCP / PSCP commands (commands intended for the operating system running under Her-
cules).

Figure 4: Console Panel Command Line

Given without prefix the entered command is assumed to be a Hercules command. Prefixed with a period
(dot) or an exclamation mark the command is assumed to be a SCP reply or a SCP priority message re-
spectively.

If you are mainly working with Hercules commands then this behavior is fine. However if you are entering
a lot of SCP or PSCP commands then every time prefixing the command with a period or exclamation

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