Page of GC20-1806-9 As Updated April 1, 1981 by TNL GN25-0834 I/O DEFINITION STATEMENTS The I/O definition statements describe the tape, DASD, and printer
devices used while executing the DASD Dump Restore program.
An INPUT or OUTPUT statement describes each tape and DASD unit used.
The format of the INPUT/OUTPUT statement is: r----- , I INput I OUTput I I I I I I I cuu .r ,
type Ivolserl ( (options ••• ) ] I altapel L .J Qption§: r ,
r ,
r
, ISKip nn I I MOde 6250 I I REWind I ,SKip Q I I!Ode 1600 , IUNloadf L .J IlIOde 800 I ILEave I L .J L .J L---- ____________________________________________________________________ INPUT OUTPUT cuu
type
volser
indicates that the device described is an input device.
indicates that the device described is an output device. If the output device is a DASD device and DDR is running
under ClIS, the device is released using the C!S RELEASE command function and DDR processing continues.
is the unit address of the device.
is the device type (2314, 2319, 3330, 3330-11, 3340-35, 3340-70, 3350, 23-05-1, 2305-2, 2400, 2420, or 3420) (no
7-track support for any tape devices). Specify a 3410 as a 3420. Specify a 3340-10F as a 3340-10, and a 3333 as a 3330. specify a 3350 that is in 3330-1 or 3330-11 compatibility mode
as a 3330 or 3330-11. Specify a 3344 as a 3340-10, and
specify 3350 for a 3350 operating in native mode (as opposed
to compatibility mode).
Note: The DASD Dump Restore (DDR) program, executing in a vIrtual machine, uses I/O DIAGNOSE 20 to perform I/O operations on tape and DASD devices. DDR under ClIS requires
that the device type entered agree with the device type of the
real device as recognized by VlI/370. If there is a conflict
with device types, the following message is issued: DMKDDR708E INVALID OPTION However, if DDR executes standalone in a virtual machine, DDR
uses DIAGNOSE 20 to perform the I/O operation if the device
types agree. If the device types do not agree, error message D!KDDR708E is Issued. is the volume serial number of a DASD device. If the keyword "SCRATCH" is specified instead of the volume serial number, no
label verification is performed. 160 VM/370 Operator's Guide
altape is the address of an alternate tape drive. If multiple reels of tape are required and "altape" is
not specified, DDR types the following at the end of the reel: END OF VOLUME eYL xxx HD xxx, BOUlT NEXT TAPE After the new tape is mounted, DDR continues automatically. QE!ioJt§: SKIP nn
o
r ,
forward spaces nn files on the tape. nn is any nuaber
up to 255. The SKIP option is reset to zero after the
tape has been positioned. MODE 162501 causes all output tapes that are opened for the first 116001 tiae and at the load point to be written or read in I 8001 the specified density. All subsequent tapes mounted L are also set to the specified density. If no aode REWIND UNLOAD LEAVE option is specified, then no aode set is perforaed and
the density setting reaains as it previously was. rewinds the tape at the end of a function.
rewinds and unloads the tape at the end of a function.
leaves the tape positioned at the end the file at
the end of a function. 1= When the wrong input tape is mounted, the aessage D!KDDB709E is displayed and the tape will rewind and unload regardless of options REWIND, UNLOAD, or LEAVE being specified.
2. If DDR is executed from eMS, failure to attach the tape drive or
the disk device (or both) to your virtual machine prior to invoking
the input/output statement causes the following response to be
displayed: INVALID INPUT OR OUTPUT DEFINITION Use the SYSPRINT control statement (in the standalone DDR virtual
aachine only) to describe the printer that is to print data extents
specified by the PRINT stateaent. It also can print a aap of the
cylinder extents froa the DU!P, RESTORE, or COpy state •. en.t. If the SYSPRINT statement is not provided, the printer assignment defaults to OOE. eMS ignores the SYSPRINT stateaent when you DDR as a
co •• and under eMS, and eMS always directs the output· to OOE. The foraat
of the SYSPRINT control statement is: SYsprint cuu cuu specifies the unit address of the device. Section 4. V8/370 Service prograas 161
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