COMCHECK TDCM subcommand output

The COMCHECK TDCM subcommand formats DIDOCS pageable display control modules (TDCM). TDCMs contain information related to MCS console screen management.

To obtain the status for a TDCM, you must first find the address of its associated control block. Use COMCHECK TDCM(LIST) to find the addresses of all TDCMs in the dump. Choose an address from the list and use COMCHECK TDCM(address) to format the TDCM at that address.

If you want to view the status of all TDCMs in the dump, use COMCHECK TDCM(ALL).

The following is an example of a COMCHECK TDCM(address) report:

                    COMMUNICATION TASK ANALYSIS

                         TDCM INFORMATION

CONSOLE ID:                              0000000E
CONSOLE TYPE:                            MCS
TDCM ADDRESS:                            00580C90
CONSOLE NAME:                            CON0A0
CONVERSATIONAL MODE:                     NO
MESSAGE DELETION MODE:                   ROLL DELETABLE
MESSAGE ROLL TIME(SECONDS):                     1
MESSAGE ROLL NUMBER(LINES):                    28
MESSAGE SEGMENTATION(LINES):                   28
NUMBER OF LINES IN MESSAGE AREA:               28
ADDRESS OF SCREEN IMAGE BUFFER:          00581180
ADDRESS OF OUT OF LINE SIB:              0066916C
ADDRESS OF CHANNEL PROGRAM AREA:         005810D8

In this example, X'00580C90' is the address of the TDCM. COMCHECK TDCM(00580C90) is the correct syntax used to obtain this report.

The following fields can appear in a COMCHECK TDCM report:

CONSOLE ID

A 4-byte identifier that the system assigns to the console at system initialization.

CONSOLE TYPE

Indicates the type of console. Possible values include:

MCS: Indicates that this is an MCS console.
SMCS: Indicates that this is an SMCS console.

TDCM ADDRESS

The address of the pageable display control module.

CONSOLE NAME

A 2- through 8-character name defined in the CONSOLxx parmlib member at system initialization. If no name was specified, the console identifier appears in this field.

CONVERSATIONAL MODE

One of the following:

YES: Conversational message deletion is in effect. The system allows you to verify a request to delete a message before deleting it from the screen.
NO: Non-conversational message deletion is in effect. The system immediately deletes messages from the screen when you enter a deletion request.

MESSAGE DELETION MODE

One of the following:

AUTOMATIC: The system deletes certain messages from the screen automatically whenever the message area is full and messages are waiting to be displayed.
MANUAL: The system deletes messages from the screen only when you enter a deletion request. All messages waiting to be displayed remain in a queue until screen space becomes available.
ROLL: Roll mode is in effect. A specified number of messages (the value of RNUM in the CONSOLxx parmlib member) roll off the screen at a specified time interval (the value of RTME in CONSOLxx).
ROLL DELETABLE: The same as roll mode, except that action messages accumulate at the top of the screen.
WRAP: The same as roll mode, except that new messages overlay the messages displayed at the top of the screen. An on-screen position indicator identifies the oldest and newest messages.

MESSAGE ROLL TIME (SECONDS)

The time interval between message rolls. The value in this field can be 1/4, 1/2, or any decimal number from one to 999.

MESSAGE ROLL NUMBER (LINES)

The maximum number of lines included in one message roll. The number of lines is limited to the size of the message area.

MESSAGE SEGMENTATION (LINES)

The number of lines in the message area that will be deleted when the operator issues the CONTROL E, SEG command.

NUMBER OF LINES IN MESSAGE AREA

The size of the message area for this console.

ADDRESS OF OUT OF LINE SIB

The screen image area that contains out of line information that determines the physical appearance of the out of line areas at any time.

ADDRESS OF SCREEN IMAGE BUFFER

The screen image area contains information that determines the physical appearance of the console screen at any time. The information contained in the screen image area is used to build the channel program area.

ADDRESS OF CHANNEL PROGRAM AREA

The channel program area contains the channel program for MCS consoles that, when run, will build the screen image that physically appears on the console.

The ADDRESS OF WSF AREA, ADDRESS OF SMCS INPUT AREA, and ADDRESS OF BUFFER LIST ENTRIES fields described later are displayed only when the console is an SMCS console.

ADDRESS OF WSF AREA

The area that contains write structured field (WSF) information for SMCS consoles.

ADDRESS OF SMCS INPUT AREA

The input buffer used by SMCS consoles.

ADDRESS OF BUFFER LIST ENTRIES

The area that contains buffer list entries (BLENTs) for SMCS consoles.