Texas Instruments 990 User Manual page 62

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946289-9701
4.5.3.3 Using the Send Request Feature. In a 990 to 990 communication envirc1nment, the local
station can send a request to the remote station that a specified file be sent to tht· local station. In
essence, the local station sends a Send Data (S) or Send Data with Device Selection (SS) command
to the remote station for execution. The send command used in the send request is not a standard
Emulator send command. In addition to the standard command, the Send Request send command
includes ·a specification of transparency on or off, end of media
(2780)
or compression/ expansion
(3780)
on or off, and the send record length.
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To use this feature, the operator enters the following in response to the first PATHNAME: prompt
of the Send Data (S) command:
• A text string consisting of the Send Request information.
• A pathname of a file whose first record consists of the Send Request information.
• A pathname of a file whose only record consists of the Send Request information.
The Send Request information is as follows:
• A four-character Send Request recognition code. This code may be the standard default
recognition code SSSS or a user-defined recognition code.
• An S or SS.
• An alphabetic character enabling or disabling EBCDIC transparency. Entering the
character T enables transparency; the character 0 disables transpuency.
• An alphabetic character enabling or disabling end of media
(2780
Emulator users only) or
compression/ expansion (3780 Emulator users only). Entering the character E enables end
of media or compression/ expansion; the character 0 disables end of media or
compression/ expansion.
• The send record length for the requested transmission.
• The output device selection if SS is the Send Request command. Entering PR selects the
printer; PU selects the card punch.
• The pathname or synonym of the file to be transmitted.
The format of the Send Request is as follows:
Using the S command:
RRRRS•T•E•RL •pathname•
·Using the SS command:
RRRRSS•T•E•RL •DD•pathname•
where the RRRR field is the four-character Send Request recognition code, S or SS is the send
command, the T field is the one-character transparency designation, the E field is the one-character
end of media or compression/ expansion designation, the RL field is the one- to three-digit send
record length, the DD field is the two-character device selection, and pathname is the pathname
field.
4-24
Digital Systems Group