z/OS Communications Server: SNA Diagnosis Vol 1, Techniques and Procedures
Previous topic | Next topic | Contents | Contact z/OS | Library | PDF


Normal data transfer (Y-side)

z/OS Communications Server: SNA Diagnosis Vol 1, Techniques and Procedures
GC27-3667-00

Figure 1 shows the data areas associated with the following normal data transfer channel program.

 
 
Sequence

 
 
CCW

Command
code
(hex)

 
 
Flags

 
 
Address

 
Byte
count
1 WCTL

17/
14

 CC,SLI Zero 1
Note: WCTL is used when this host is initiating a write operation. SCB is used when this host is responding to an attention (because the other host has data that it wants this host to read).
2 Read 02 CC,SLI YCNRDIDA Total length of Read buffer
3 Write 01 SLI YCNWRIDA Number of bytes to transfer
Figure 1. Data areas used for normal data transfer (Y-side)
Diagram that shows the data areas associated with the Y-side of a normal data transfer channel program for nonblocking protocols.
Parent topic: Channel programs for CTC data transfer: Blocking protocol

Go to the previous page Go to the next page

Notices | Terms of use | Support | Contact z/OS | zFavorites



Copyright IBM Corporation 1990, 2014