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Printer-Keyboard Mode
Operator Control Panel
For display mode, the first 20 lines of the screen are the system area while the next
4 lines are the system status area. Line 25 is used as a console indicator area. The
system area is used for communication between the operator and the operating
...,
system and for displays associated with manual operations performed by the
operator or customer engineer.
For printer-keyboard mode, the display console appears to the 4381 Processor as a
1052 Printer-Keyboard if a System/360 operating system is being used or as a
3210/3215 Console Printer-Keyboard if a System/370 operating system is being
used. The keyboard is used for input and the cathode ray tube is used for output.
A natively attached 3287 (Model l, lC, 2, or 2C) or 3268 Model 2 or 2C Printer
is optional for hard-copy output. Device address X'OlF' or X'009' would
normally be used for the display /keyboard.
For printer-keyboard mode, the message area for operator-to-operating system
communication consists of lines 1to18. All of line 19 and the first 46 characters
of line 20 are the operator input area that displays the data the operator keys in (up
to 126 characters). Character positions 48 through 79 of line 20 are used as an
indicator area. Lines 21 to 25 are used for the same functions as when display
mode is in effect. When a 3287 or 3268 Printer is designated for hard copy, data
entered via the keyboard and displayed on the screen is automatically written to the
3287 or 3268 Printer.
When printer-keyboard mode is in effect, the screen is treated like a
printer-keyboard device. Messages appear on the screen in successive lines until
the screen becomes full. Then the top six lines are deleted automatically by the
hardware and the remaining lines are moved up to leave six blank lines in positions
13 to 18. Since the operator cannot control the contents of the screen, as with
display mode, the 3287 or 3268 Printer is recommended for hard-copy output.
In printer-keyboard mode, the 3205, 3278 Model 2A, or 3279 Model 2C is
controlled using 3210/3215 commands. The display/keyboard and optional 3287
or 3268 Printer have the same address and the same data is automatically printed
on the 3287 or 3268 as is displayed on the screen. A maximum of two of the
natively attached 3278 Model 2A and/or 3279 Model 2C displays can be
operating in printer-keyboard mode. Each can have an associated hard-copy
printer.
The operator control panel for a 3205 primary console can be attached to the 3205
unit or located separately from the 3205. For a primary 3278 Model 2A or 3279
Model 2C console, the operator control panel is located on the keyboard of the
console. The operator control panel contains the following pushbutton controls
and indicators:
•
Power on/IML pushbutton. When this pushbutton is pressed, a power-on of
the support processor subsystem and IML of the support processor occur. At
the successful completion of these operations, the balance of the 4381
Processor (including the Channel-to-Channel Adapter if installed) is powered
on as are all
1/0
devices that are set to be powered on/off with the processor.
An IML of instruction processing function microcode occurs automatically if
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A Guide to the IBM 4381 Processor
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