A fullword identifying the type of processing request. The request type is identified by these values:

1

OPEN—exit receives control before any input or output processing.

The exits are opened in this order:

1. SOURCE
2. LIBRARY
3. LISTING
4. TERM
5. OBJECT/PUNCH
6. ADATA

2

CLOSE—exit receives control before the assembler does any close processing.

The exits are closed in this order:

1. SOURCE
2. LIBRARY
3. OBJECT/PUNCH
4. ADATA
5. TERM
6. LISTING

3

READ—exit receives control to provide a record to the assembler.

4

WRITE—exit receives control to write a record provided by the assembler.

5

PROCESS (for exit types other than LIBRARY)—exit receives control to inspect or manipulate the record provided by the assembler.

5

PROCESS MACRO (LIBRARY exit type)—exit receives control to inspect or manipulate the macro definition record provided by the assembler.

6

PROCESS COPY (LIBRARY exit type)—exit receives control to inspect or manipulate the copy member record provided by the assembler.

7

FIND MACRO (LIBRARY exit type)—exit receives control to locate the specified library macro.

8

FIND COPY MEMBER (LIBRARY exit type)—exit receives control to locate the specified copy member.

9

END OF MEMBER (LIBRARY exit type)—exit receives control after the reading of a macro or copy member is completed.

10

REINIT—exit receives control during the assembler's reinitialization processing between assemblies in a batch. This call only occurs if the exit requested the REINIT by setting reason code 16 in response to the OPEN request.