175: 3290 Password (Configuration Support T Only); 176: Bsc Enhanced Communication Option (Configuration Support T Only); Through - IBM 3270 Manual

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Bit 7 - Update Panel Before Allowing Buffer Change.
When bit 7 is set to 0, the 3290 will suspend panel updating to
process a host transmission. Under high-data-rate conditions,
messages sent by the host and placed in the display buffer may get
overlaid with new data before being displayed on the panel.
When bit 7 is set to 1, all display buffer contents must be displayed
on the panel before new data can be placed in the display buffer.
It is recommended that bit 7 be set to 1 when 3290s are being used
as system consoles or other applications when potentially high
message rates are possible and the user is required to visually
interpret all data sent by the host.
175: 3290 Password (Configuration Support T Only)
Enter the 6-digit password to allow permanent changes to the 3290
definition table using setup level 3.
176: BSC Enhanced Communication Option (Configuration Support T Only)
201 through 362
Enter 0. Not applicable to Band D models.
For sequence numbers 201 through 352, fill in the appropriate boxes in step
8 of the Initial Customizing Procedure Form with the following entries:
201 Enter 00.
211 Enter 0.
213 Enter 0.
215 Enter 00000.
301 Enter 00.
302 Enter 00.
305--352 Enter 0 in each box.
360 Enter 00 (Configuration Support C only).
361
Enter 00 (Configuration Support C only).
362
Enter 00000000 (Configuration Support C only).
Chapter 3. Preparing to Customize
3-33