z/VM: CP Commands and Utilities Reference - z/VM - IBM

Usage Notes
Code Width in Inches
Width in Millimeters
(ISO)
DEFINE (Spooling Device)
4WCGM
2WCGM
specifies the number of writable character generation modules (WCGMs)
assumed for the virtual 3800 printer. A WCGM is a 64-position portion of 3800
character generation storage that holds the scan elements of 1 character set. A
3800 can have either 2 or 4 WCGMs. If neither is specified, the default is
4WCGM.
Note: Specifying 3800-3 with 2WCGM results in an error message.
CFS
BTS
specifies the stacker for the virtual 3800 printer. You can choose either CFS
(continuous forms stacker) or BTS (burster trimmer stacker). If neither is
specified, the default is CFS.
NODATCK
DATCK
specifies the desired handling of certain virtual 3800 data checks. If neither is
specified, the default is NODATCK.
If you specify DATCK, all 3800 data checks are reflected to the virtual machine
(provided the BLOCK DATA CHECK CCW has not been issued). If you specify
NODATCK, only data checks that occur because of nonvalid translate table
specifications or unmatched FCB codes are reflected to the virtual machine.
Note: DATCK should be specified only when absolutely necessary, as it
severely increases the overhead associated with simulation of WRITE
and SKIP CCWs to the virtual 3800. In general, the reflection of data
checks because of overprinting and nonvalid EBCDIC codes is not
necessary.
1. Avoid using device addresses that can be mistaken for device types (such as
1403 and 3203). When it encounters a device address that is the same as an
IBM device type, CP assumes that you are specifying a device type and not a
device address.
2. If you define a virtual 3211 printer, it supports the CP command LOADVFCB
and the INDEX feature.
3. The default classes given to spool files created on this device are as follows:
v Class A reader
v Class A printer
v Class A punch.
4. Virtual printers, consoles, and punches are created with the default option
NOEOF.
5. Defaults for some real printer attributes (for example CHARS) are not set when
a virtual printer is created with the DEFINE command.
6. The maximum data length for a VAFP spool file is 32767 bytes. See the RSCS
library for information on RSCS logical record length restrictions.
Chapter 2. CP Commands 183