Hexadecimal Field
Displacement Name
4
5
6
6
7
8
9C D 10 14
181C 1D 20 24
282C CCBCSW1 DS !!i!.§ CCBATTN EQU CCBSTMOD EQU CCBCUE EQU CCBBUSY EQU CCBCE EQU CCBDE EQU CCBUC EQU CCBUE EQU CCBCSW2 DS Bits defined --- ------ CCBPCI EQU CCBILEN EQU CCBPROGM EQU CCBPROT EQU CCBCHAND EQU CCBCHANC EQU CCBICTRL EQU CCBCHAIN EQU CCBSYMU DS CCBSUCLS DS CCBSUNUM DS CCBLIOBS DS CCBCCW DS CCBCOM3 DS CCBAPEND EQU CCBCSW DS CCBLDATB DS CCBLCCWB DS DS CCBUFLGS DS !!i!.§ CCBUEAIC EQU CCBUEAC EQU CCBURDCW EQU CCBRPS EQU CCBFSCCW DS CCBRDCCW DS CCBWTCCW DS CCBLWCCW DS DS XL1 in CCECSW1 --X'8'O'-- X'40' X'20' X'10' X'08' X'04' X'02' X'01' XL1 in CCBCSW2 --x=ao:-- X'40' X'20' X'10' X'08' X'04' X'02' X'01' OXL2 XL1 XL1 XL1 XL3 XL1 X'40' XL3 A
A
FX in CCEUFLGS -- X'SCj"i--- X'40' X'20' X'10' XL3 F
F
F
3F
Field Description, Contents, A*3 csw status tit 1
AttentionStatus modifier Control unit end
BusyChannel end
Device endUnit check Unit exception
A*4CSW status tit 2 program-controlled interruFt Incorrect length Program check Protection check Channel data check Channel central check
Interface controlcheck Chaining check Symbclic unit (SYSUN) A*5 U - LUB class
A*6 N
-LUB numter within class 1*7 Reserved for tleES Pointer to start of channel Frogram A*8 Communication byte 3 APFendage exit at interrupt Pointer to csw or to appendage routine Address of last data block
Address of lastCCi tlock
Reserved forIBM use
A*9I/O manager CCB flags
Error analysis in control
Errer analysis complete
ReadCCW active RPS channel program candidate Save area fer first CCi address
Address of first readCCW Address of first write ccw Address of the last write CCW Reserved for IBM use DMSCCB Note: CCBLWCCW chain field must have the same displacement as does FCECHIIN In-FCDB and also BKPFSTBK in BKPRD 38 3C CCBNCCB DS DS A
F
Address of nextCCB block Reserved for IBM use Section 2. CMS tata Areas and Centrol Blocks 163
Displacement Name
4
5
6
6
7
8
9
18
28
A
F
F
F
3F
Field Description, Contents,
Attention
Busy
Device end
A*4
Interface control
A*6 N
-
Address of last
Reserved for
A*9
Error analysis in control
Errer analysis complete
Read
Address of first read
F
Address of next