Display Data Stream—Chapter 6
273TE 2000
5250 Terminal Emulation Programmer’s Guide
Restore Screen
Function
The Restore Screen command restores all data stored by the last Save
Screen command.
Restrictions
The terminal rejects this command when it is in a system r equest or SS
message state.
Format
The command takes the following f orm:
ESC Restore Screen Command Data From Last Save Command
Hex 04 Hex 12 <saved data>
Results
The following describes what happens when this command is executed.
These are restored:
S Contents of the display.
S Contents of the format table.
S State of the keyboard, including the insert mode with the annunciators.
S Location of the cursor and the way it was displayed.
S System insert cursor address.
S State of the master MDT bit.
S Error code and any explanatory information provided by the host sys-
tem in the Write Error Code command, if the terminal was in an error
state. The error code and any information are returned via the opera-
tor’s use of the Help key.
S Requirements to send LU-LU Lustat when error line is available.
S Any Read command that was pending at the time.
S Any AID requests that were outstanding at the time of the Save Screen
command.
These conditions from the previous save are not restored:
S Condition of the Shift key and the associated annu nciator .
S Status of the Message Waiting annunciator.
S The current status of the hex mode is reset.
The following conditions cause parameter errors: invalid data is detected
and the required amount of data is not received.
Note:AClear Unit command is executed if an error is detected.
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