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OPERATING INSTRUCTIONS
SECTION 3
3.7.5
PRINT Key
Pressing PRINT (shifted or unshifted) transfers data on the CRT screen
to the printer and disables the keyboard.
Data from the cursor home position (upper
left corner of screen) to the cursor is printed.
If the cursor is in its home po-
sition, the entire screen is printed.
When the transfer is completed, the keyboard
. is re-enabled.
3.7.6
STORE Key
Pressing STORE (shifted or unshifted) transfers data on the CRT screen
to the auxiliary storage and disables the keyboard.
Data from the cursor home posi-
tion (upper left corner of screen) to the cursor is transferred.
If the cursor is
in its home position, the entire screen of data is transferred.
3.7.7
"#
NOTE:
It may also be necessary to actuate controls on the
storage device being used.
For example, a TECHTRAN
4100 series tape cassette drive requires that, 1) the
WRITE control be pressed to space the tape over the
leader when the tape is on clear leader and, 2) the
END MODE control be pressed if the drive just completed
a read command.
READ Key
Pressing READ (shifted or unshifted) transfers data from the auxiliary
storage to the CRT screen and disables the keyboard.
Data in storage will be read
until a stop read command is transferred or the end of file is encountered on the
medium.
(The'exact
sequenc~
depends on the characteristics of the storage device).
3.7.8
NOTE:
~e
host must supply the start and stop commands when
data was entered into the auxiliary storage with the
STORE INPUT function.
Data entry with the STORE key
includes terminal-supplied start and stop command.
The keyboard is automatically enabled after the record
is trans ferred.
KEYBOARD DISABLED Indicator
This key position functions only as an indicator.
When the light is on,
keyboard input is not allowed.
Exceptions (explained earlier):
RESET, STORE INPUT,
and STORAGE TRANSMIT.
That is, the terminal will not accept key strokes.
The key-
board is enabled when the indicator is off.
3.7.9
RECEIVED PARITY ERROR Indicator
This key position serves only as an indicator, and it operates only if
parity is enabled (see paragraph 3.1.4).
When the indicator is on, it signifies
that a parity error was detected in a received character.
3-6
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