CLOSE
CLOSE
Close an I/O device to access.
Format
status = DISPATCH(CLOSE,
channel_nbr);
Arguments
CLOSE
CLOSE function code (11
16
).
channel_nbr
The channel number of the device to be closed.
Description
This routine closes a device to I/O access by deassigning the device’s channel
number.
Returns:
R0<63> = 0 Success
R0<63> = 1 Failure
R0<62:60> Should be zero
R0<59:32> Device-dependent error status (MBZ)
R0<31:0> Should be zero
16–56 Console
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