You can specify in an exit list the address of a forms control buffer (FCB) image. This FCB image can be loaded into the forms control buffer of the printer control unit. The FCB controls the movement of forms in printers that do not use a carriage control tape.
Multiple exit list entries in the exit list can define FCBs. The OPEN and SETPRT routines search the exit list for requested FCBs before searching SYS1.IMAGELIB.
The first 4 bytes of the FCB image contain the image identifier. To identify the FCB, this image identifier is specified in the FCB parameter of the DD statement, by your JFCBE exit, by the SETPRT macro, or by the system operator in response to message IEC127D or IEC129D.
For an IBM 3203, 3211, 3262, 4245, or 4248 Printer, the image identifier is followed by the FCB image described in z/OS DFSMSdfp Advanced Services.
You can create, modify, and list FCB images in libraries with the IEBIMAGE utility and the CIPOPS utility. IEBIMAGE is described in z/OS DFSMSdfp Utilities.
...
DCB ..,EXLST=EXLIST
...
EXLIST DS 0F
DC X'10' Flag code for FCB image
DC AL3(FCBIMG) Address of FCB image
DC X'80000000' End of EXLST and a null entry
FCBIMG DC CL4'IMG1' FCB identifier
DC X'00' FCB is not a default
DC AL1(67) Length of FCB
DC X'90' Offset print line
* 16 line character positions to the right
DC X'00' Spacing is 6 lines per inch
DC 5X'00' Lines 2-6, no channel codes
DC X'01' Line 7, channel 1
DC 6X'00' Lines 8-13, no channel codes
DC X'02' Line (or Lines) 14, channel 2
DC 5X'00' Line (or Lines) 15-19, no channel codes
DC X'03' Line (or Lines) 20, channel 3
DC 9X'00' Line (or Lines) 21-29, no channel codes
DC X'04' Line (or Lines) 30, channel 4
DC 19X'00' Line (or Lines) 31-49, no channel codes
DC X'05' Line (or Lines) 50, channel 5
DC X'06' Line (or Lines) 51, channel 6
DC X'07' Line (or Lines) 52, channel 7
DC X'08' Line (or Lines) 53, channel 8
DC X'09' Line (or Lines) 54, channel 9
DC X'0A' Line (or Lines) 55, channel 10
DC X'0B' Line (or Lines) 56, channel 11
DC X'0C' Line (or Lines) 57, channel 12
DC 8X'00' Line (or Lines) 58-65, no channel codes
DC X'10' End of FCB image
...
END
//ddname DD UNIT=3211,FCB=(IMG1,VERIFY)
/*