TCAT Back to Index page
 
Prolog 
Control Block Contents 
   TCAT DSECT
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.

 
  TCAT Control Block Content Top of page
 

 TCAT DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure TCAT FCX Transport Command Control Block 0000 0 Bitstring 4 TCATW0RS Reserved for IBM use 0004 4 Signed 4 TCATCNT Transport Count (unsigned) Or Write count for bidirectional data transfer 0008 8 Signed 4 TCATRCNT Read count (only included in TCAT for bidirectional data transfer) 0000000C TCATBSZ *-TCAT Length of TCA trailer 000000F0 TCAMAX 240 00000004 TCWLMIN TCATCNT-TCAT Min TCWTCCBL (TCWW1B1) 000000F4 TCWLMAX TCAMAX+TCWLMIN Max TCWTCCBL (TCWW1B1) 0000000C TCALMIN (TCADCW-TCASAC)+(TCATCNT-TCAT) Min TCALEN 000000FC TCALMAX TCAMAX+TCALMIN Max TCALEN 0000010C TCCBMXSZ TCCBEND-TCCBK Max byte size of TCCB 00000022 TCCBMXDW (TCCBMXSZ+7)/8 Max dword size of TCCB
 
 
  TCAT Storage Layout Top of page
 
          
*** TCAT - FCX Transport Command Control Block
*
*     +---------------------------+---------------------------+
*   0 |         TCATW0RS          |         TCATCNT           |
*     +---------------------------+---------------------------+
*   8 |         TCATRCNT          | C
*     +---------------------------+
*
*** TCAT - FCX Transport Command Control Block
 
 
  TCAT Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
TCALMAX        0008 000000FC
TCALMIN        0008 0000000C
TCAMAX         0008 000000F0
TCATBSZ        0008 0000000C
TCATCNT        0004
TCATRCNT       0008
TCATW0RS       0000
TCCBMXDW       0008 00000022
TCCBMXSZ       0008 0000010C
TCWLMAX        0008 000000F4
TCWLMIN        0008 00000004
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:56:54 EDT.
Copyright IBM Corporation, 1990, 2022