Parameter descriptions for the 80% message capacity exit

The 80% message capacity exit receives the standard parameter list with the following exceptions:

The parameters are in key 1 storage.
The command buffer, new command buffer, and exit reason code fields are not used. Their values in the parameter list are:
Key

X'00'

Length

X'04'

Data

X'00'

Figure 1 shows the exit-dependent data that the 80% message capacity exit receives beginning at offset +36 (decimal) in the parameter list.

Figure 1. Exit-dependent data for the CONSOLE 80% message capacity exit

Current® Table Size (Parameter Entry 10)

This parameter contains the number of messages in the table. This parameter is information only and should not be changed. Any changes are ignored.

Current Maximum Table Size (Parameter Entry 11)

This parameter contains the current maximum size of the message table. If the exit changes the maximum size, the new value must not be greater than the value contained in parameter 12 (installation maximum). If the new value is larger than the value contained in parameter 12, parameter 12 is used.

Installation Maximum Table Size (Parameter Entry 12)

This parameter contains the absolute maximum size allowed for this type of message table as defined in the IKJTSOxx member of SYS1.PARMLIB. This parameter is information only and should not be changed. Any changes are ignored.

Flags (Parameter Entry 13)

This parameter contains a word consisting of flags, in which the command passes indicators to the exit. The flags are described in Table 1.

Table 1. Flags passed to the CONSOLE 80% message capacity exit
Flag	Meaning
X'80000000'	The message table is for solicited messages. If this bit is off, the table is for unsolicited messages. This field should not be changed.
X'40000000'	Messages are currently being displayed at the terminal. If this bit is off, the user is not having messages displayed at the terminal. The exit can change this bit to indicate that the user should or should not have messages displayed at the terminal.
X'20000000'	Reserved.
X'10000000'	The TSO/E message service routine should issue a message to the user indicating the situation. By default, this bit is off. If a message is to be issued to the user, the exit must turn this bit on.
X'08000000'	Messages are to be displayed at the terminal regardless of the setting of the X'40000000' flag. At the point in which the message table reaches the resume percentage, the option of the X'40000000' bit is reinstated and processing resumes as normal. By default, this bit is off. If the exit turns this bit on, it must also specify the resume percentage in the parameter list (parameter entry 14).
X'07FFFFFF'	Reserved.

Resume Percentage (Parameter Entry 14)

This parameter contains a value that specifies the percent capacity that the message table must be reduced to before the normal profile setting for displaying messages is resumed (X'40000000' flag). If the exit updates this entry, the key value should be changed to X'01'. This value is used only if the X'08000000' flag is on.