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

DVPHY. [CALLI 164]
22.37 DVPHY. [CALLI 164]
FUNCTION
Returns the physical names of devices and controllers
pseudo-terminals, terminals, MPX devices, and disks) .
(except
By specifying the device type (as returned by DVTYP. UUO), you can
return all the physical device names for a specific device or all
devices.
CALLING SEQUENCE
MOVE ac, [XWD len,addr]
DVPHY. ac,
error return
skip return
addr:
/ EXP
\ EXP
BLOCK
device-type \
-1 /
1
In the calling sequence, the program supplies the following variables:
o len is the length of the argument block (must be 2) .
o addr is the address of the argument block. The first word of
the argument list specifies the devices to list:
o
device-type is one of the device type codes returned from the
DEVTYP monitor call, such as .TYLPT for a line printer.
To list all the devices, use -1 instead of the device type.
To list all controllers for a specific type of device, use the [-n"m]
format, where n is the number device types to return, and m is the
device type code.
On the first DVPHY. call, addr+1 should contain O. The monitor
returns the name of the first device. If you leave this name in
addr+l, the next DVPHY. call returns the name of the next device, and
so forth. When all devices have been returned (by several calls), the
monitor returns 0 in addr+1.
SKIP RETURN
For 0 in addr+1, the monitor returns the name of the first device; for
a device name in addr+l, the monitor returns the name of the next
device, or, if there are no more devices, O. The ac is unchanged.
ERROR RE TURN
One of the following error codes is returned in the ac:
Code
1
2
3
4
Symbol
DVPIA%
DVPIT%
DVPNP%
DVPNT%
Error
Illegal argument length.
Illegal device type.
Nonexistent physical device.
Nonexistent device type.
22-105