Use the CHECK macro to wait for completion of an I/O request.
The format of the CHECK macro is:
[label] |
CHECK |
RPL=address |
- label
- specifies 1 to 8 characters that provide a symbolic address for
the CHECK macro.
- RPL=address
- specifies the address of the request parameter list that defines
the request. You may specify the address in register notation (using
a register from 1 through 12, enclosed in parentheses) or specify
it with an expression that generates a valid relocatable A-type address
constant.