Customization › FCB Considerations › FCB Extensions

FCB Extensions

In addition to the normal functions of FCBs, some extra facilities are also available in CA Spool:

• For SCS printers the line density is set through the SLD command.
• Normal FCBs can specify 6 or 8 lines per inch.
• In CA Spool 3 or 4 lines per inch is also available. This is specified in the lines per inch byte using the following values:
  • X'2n'4 lines per inch
  • X'4n'3 lines per inch
• If the value ASIS is specified for a file without carriage control characters, no control characters are added to the data stream.
• If ESFPRINT is used to create spool files with FCB=ASIS, a dummy ASIS FCB must exist.
• CA Spool supports an extension to the FCB containing data, which is used to set up the printer with SCS commands.

The format of the CA Spool FCB extension is:

         $IQFCB  8,8,68,(1,1,7,2,13,3,19,4,25,5,31,6,37,7,43,8)    
ESFFCBEX DS    0D                                                
         DC    CL8'ESFEXT'   Identifier                          
         DC    AL2(198)      MPP max presentation position       
         DC    AL1(2)        PPM-Q print quality                 
         DC    AL1(15)       CPI Character per inch horizontal   
         DC    XL1'00'       PPM0 Drawer number for separator pgs
         DC    XL1'00'       PPM1 Drawer number for first page   
         DC    XL1'00'       PPM2 Drawer number for second page  
         DC    XL1'00'       PPM3 Drawer number for subsequent pgs
         END                                                     

The $IQFCB macro is supplied in the CBQ4MAC library and it is used to generate standard MVS formatted FCBs.