Intermec CV30 Intermec Terminal Emulator (ITE) Programmer's Reference Manual - Page 37

Chapter 1 - About 3270 and 5250 Programming • Contents of the display and format table. • State of the keyboard, including the insert mode with the annunciators. • Location of the cursor and the way it was displayed. • System insert cursor address. • State of the master MDT bit. • Requirements to send LU-LU Lustat when error line is available. • Any pending Read command. • Any outstanding AID requests at the time of the Save Screen command. • Error code and explanation provided by the host system in the Write Error Code command, if the computer was in an error state. Error code and information are returned via the operator's use of the Help key. These conditions from the previous save are not restored: • Condition of the Shift key and the associated annunciator. • Status of the Message Waiting annunciator. • The current status of the hex mode is reset. The following conditions cause parameter errors: • Invalid data is detected. • Required amount of data is not received. Note: A Clear Unit command is executed if an error is detected. Description: Restrictions: Roll The Roll command causes the image presented in the computer display to roll up or down across the larger image area available on the IBM Display Station. The command is rejected if the display is in the prehelp error, posthelp error, system request, or SS message state. Note: If the display supports a separate message line, and the message line is selected, the command is rejected only for system request and SS message states. The command is processed with the display in error state. Format: The Roll command consists of five bytes formatted as follows: ESC Hex 04 Roll Hex 23 Direction Top Row Number Bottom Row Number Hex 08 Hex 01 Hex 23 Bits in the direction byte define the direction and number of lines to roll. Bit 7 is the most significant bit. Intermec Terminal Emulator (ITE) Programmer's Reference Manual 25