TOPS-10 Monitor Calls Manual Volume 2 AA-K039D ... - Trailing-Edge

CNECT. [CALLI 130]
22.15 CNECT. [CALLI 130]
FUNCTION.
Connects or disconnects a device associated with an MPX channel. You
can use CNECT. only with devices that are MPX-controllable
(specifically, terminals, pseudo-terminals, line printers, card
readers, paper tape punches, and remote data terminals) .
CALLING SEQUENCE
MOVE I ac,addr
CNECT. ac,
error return
skip return
addr:
XWD
I SIXBIT
\ EXP
fcn-code, channel
Idevicel \
udx I
In the calling sequence, you can supply the following variables:
o
o
o
addr is the address of the argument block.
fcn-code is one of the function codes described below.
channel is the number of an initialized MPX channel.
o device is the SIXBIT physical, generic, or logical name of a
device.
o
udx is the Universal Device Index for the device.
Your program must initialize an MPX channel for the device using an
OPEN call, before using the CNECT. call to connect the device to an
MPX channel. The device must be initialized and connected to the MPX
channel before it can be used for any I/o.
The function codes and their meanings are:
Code Symbol Function
1 .CNCCN Connects the device to an MPX channel.
2 .CNCDC Equivalent to CLOSE and disconnect from MPX
channel.
3 .CNCDR Equivalent to RESET and disconnect from MPX
channel.
4 .CNOFE Determines output feasibility.
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