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Processing for Terminal Functions
Initialization
Termination
This section describes the processing for the following functions:
• Initialization
• Termination
• Key tracking.
When the 3708 receives a BIND specifying LU type 2, or when the user enters the
correct control terminal password, the port begins operating in protocol conversion
mode. At this time, the 3708 sends a set of initialization commands to the device, as
follows (the items in capital letters are control sequences, obtained from the terminal
table that is being used):
1. If the terminal type is one described in the previous sections that requires an
initialization sequence, the appropriate sequence is sent.
2. ACTIVATE STATUS LINE2
3. HIGHLIGHT OFF2
4. SET CURSOR ADDRESS to 0,0 (upper left hand comer)
5. CLEAR SCREEN
6. STOP PRINTER2
7. If the terminal supports an addressable status line (flag bit 1 is set to 1 in the
terminal table), the status line is sent there, using the steps described in "How
the 3708 Updates the Status Line" on page 4-37.
8. SET CURSOR ADDRESS to 0,0
9. HIGHLIGHT OFF or SET COLOR 1
Note: If both highlighting and color are defined, the color function is
performed; highlighting is ignored.
When an UNBIND is received to terminate the current LU type 2 session, the 3708
sends the following termination sequences to the device. Unless the UNBIND type
and the DISCONNECT configuration option result in a disconnect, nothing is sent
to the terminal.
1. STOP PRINTER2
2.
STATUS LINE OFF2
3. SET CURSOR ADDRESS TO 0,0
4. CLEAR SCREEN.
2
For these sequences, if the first byte of the sequence in the terminal table is 0, nothing is sent.
4 .. 76
IBM 3708 Description
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