Relationship of calls to PCB types

The following table shows the relationship of DL/I calls to I/O and alternate program communication blocks (PCBs).

The PCB can be specified as a parameter in the call list, or in the AIB, depending on which xxxTDLI interface is used:

Table 1. Call relationship to PCBs and AIBs
Call I/O PCBs ALT PCBs
APSB 1    
AUTH X  
CHKP (basic) X  
CHKP (symbolic) X  
CHNG 2   X
CMD X  
DPSB 1    
GCMD X  
GN X  
GSCD X  
GU X  
INIT X  
INQY X X
ISRT X X
LOG X  
PURG X X
ROLB X  
ROLS X  
ROLL 1    
SETO X X
SETS X  
SETU X  
SYNC X  
XRST X  
Notes:
  1. This call is not associated with a PCB.
  2. The alternate PCB used by this call must be modifiable.