Data Areas
The following data areas are used by DMKIMG and DMKNMT: • Data Control Block (DCB) • Data Extent Block (DEB) • Data Extent Centrol Block (DECB) • (PDEBLOK) All the above data areas except PDBELCK are described in the CS/VS2 ]ebyggiBg Handbook, Vol. 2, Crder Nc. GC28-0988. The PI!ELOi-is-aescribed in Figure 13-3.
4
8
C Hex Dec -0 -0 8 8 OC 12 PDENAME DS PDEDISP DS PDELGTH DS PDENAME PDEDISP PDELGTH CL8
1F
1F M.ember name REA of start of member Length of member in bytes Figure 13-3. PDEBLOK Directory Entry for Named System Chaptsr 13. D!KI!G and -- IEBI8AG! Interface 237

Diagnostic Aids
Figure 13-4 lists the messages issued by
the DMKIMG and DMKHMT. The nearest label
and the associated method cf operation
diagram are identified. I I Message Label Diagram Message Test I Code I DMKHMT2471 RETURN 13-2 3800 NAMED SYSTEM CREATED SPECIFIED ll!AGE i.age DMKNMT248E HOTEXT 13-2 SPECIFIED IMAGE image NON-EXISTENT DMKHMT249E LDERR 13-2 ERROR LOADING IMAGE image DMKNMT254E DIAGERR 13-2 ERROR SAVING imag380C - Re (return code) DMKNMT256E RANOUT 13-2 INSUFFICIENT VIRTUAL STORAGE
Figure 13-4. DMKIMG and DMKHMT Messages
238 IBM VM/370 Service Routines Program Logic