Texas Instruments 990 User Manual page 50

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946289-9701
Notes:
If transparency is on (TY=ON). compression/ expansion is ignored.
Some host systems do not support compression/ expansion; therefore. it is necessary to specif Y
ON/ OFF for the 3780 Emulator according to the system with which you are communicating.
Examples:
General format:
COMMAND:
CE
OPTION:
ON
COMMAND:
CE
OPTION:
OFF
Condensed format:
COMMAND: CE"ON*
COMMAND: CE"OFF*
4.5.1.3 End
q(
Media Command (EM) (2780 Emulator Usen· Only). Use the EM command to
enable or disable the End of Media feature. This feature places an end of record indicator at the end
of the data in a record. When the indicator is read by the receiving station, no further reading of the
record is done. In this way, trailing blanks are truncated. End of media is valid for nontransparent
data only.
General format: Condensed format:
COMMAND:
EM
OPTION:
Notes:
Some host systems do not support end of media; therefore, it is necessary to specify ON
I
OFF
for the 2780 according to the system with which you are communicating.
Specifying end of media ON or OFF affects transmitted data only; the Emulator operates
properly for any state of received data.
If transparency is on (TY=ON), end of media is ignored.
Examples:
General format:
COMMAND: EM
OPTION: ON
COMMAND:
EM
OPTION:
OFF
4-12
Condensed format:
COMMAND: EM*ON*
COMMAND:
EM*OFF*
Digital Systems Group
•