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

DEVSTS [CALLI 54]
22.30 DEVSTS [CALLI 54]
FUNCTION
Returns the device status word from the device data block (DDB). This
call returns the last CONI performed for the device, which is
different for each device type and model. To interpret the device
status word, refer to the hardware manual for the specific device.
CALLING SEQUENCE
/ MOVE ac, [SIXBIT/device/] \
I MOVE I ac,channo I
\ MOVEI ac,udx /
DEVSTS ac,
error return
skip return
In the calling sequence, the program supplies the following variables:
o
o
o
device is the SIXBIT physical or logical name of a device.
channo is the number of a channel.
udx is the Universal Device Index for a deviceJ
You can specify any device on an I/O bus. Where multiple units are on
a single controller, the status of the controller is returned.
SKIP RETURN
The device status word is returned in the ac. If the service routine
for the device does not store a CON~ the returned word may be
useless. Devices having both a controller and data interrupt store
the controller CONI.
ERROR RETURN
If the device does not exist or is not initialized, the ac is cleared.
RELATED CALLS
o
o
o
o
o
o
o
DEVCHR
DEVLNM
DEVNAM
DEVOP.
DEVPPN
DEVSIZ
DEVTYP
The device status block is also returned by the .SNSDS function of the
SENSE. UUO.
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