Frequently Used Manuals
     
      OS/390 Language Environment Message Manual
      Authorized Assembler Services (Dynamic Allocation, WTO/WTOR,SRB,UCB,exits)
      ESA/390 Principles of Operation (Machine Instructions, PSW, CCW, I/O, etc.)
      MVS/ESA JCL Reference
      MVS System Messages Vol 3 (GDE-IEB)
      MVS System Messages Vol 4 (IEC-IFD)

     
     [asm] [c] [cics] [cobol] [ims] [jcl] [jes2] [macros] [messages&codes] [pl1] [tso] [utilities] [vsam]