SY20-0884-3_Data_Areas_and_Control_Block_Logic_Update_Aug79.pdf
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Aug- 1, 1979 xii IBM VM/370 Data Areas and Control Blocks Logic
lug. 1, 1979 DDRREC DDRREC is used in the SVC 76-initiated error recording process for type 60 DlSD dump restore (DDR) dynamic device reallocation records. The reallocation records contain the replacement of the virtual "FROM" and "TO" control unit addresses (COA) by the real addresses of the real DlSD devices. 0 8 10 18 20 28 30 38 Hexadecimal Displacement ------------ 0 2 3 4 5 6 8 C 10 18 20 26 2C 2D 30 34 35 38 DDRKEYN DDRDTEN DDRVOL 1 DDRVOL2 DDRDEV1 DDRDEV2 Field Name DDRKEYN DS DDRSWS1 DD DDRSWS2 DS DDRSWS3 DS DDRRECNT DS DDRSPE1 DS DDRDTEN DS DDRTMEN DS DDRCPID DS , I D*1 I/D*2/1/D*3/1/D*4/11IDDRSPE11111111It DDRCPID DDRJOB (cont. ) I D*5 tD*6 1H 1C D*1 1C D*2 1C D*3 1C D*4 1H 1F 1F 2F DDRTKEN DDRVOL2 DDRCUl1 DDRCUl2 Field Description, Contents, Meaning Type and operating system Switch byte Reserved for IBM use Reserved for IBM use Reserved for IBM use Reserved for IBM use Date Time Processor identification and model number Da!s DDRJOB DS DDRVOL1 DS DDRVOL2 DS DDRDEVP1 DS DDRCUl1 DS DDRDEV1 DS DDRDEVP2 DS DDRCUl2 DS DDRDEV2 DS DDRSIZE EQU 8X 6X 6X 1X D*5 3X 4X 1X D*6 3X 4X (*-DDRREC) Job using FROM device Volume serial FR05 device Volume serial TO device Device identification of FROM DlSD Primary CUl of FROM device Device type FROM device Device identification TO DlSD Primary CUl of TO device Device type of TO device DDR record size section 1. CP Data Areas and Control Blocks 19