TSO/E standard exit parameter list

The TSO/E standard exit parameter list is a standard set of data that all of the standard-format exits receive. Register 1 points to a list of addresses. Each address points to a parameter entry that has a key, length, and data format. The first nine parameter entries are standard for all of the standard-format exits.

Following the standard set of data (the first nine parameter entries), an exit can also receive exit-dependent data. The end of the parameter list is indicated by the high-order bit being on in the parameter list pointed to by register 1.

Figure 1 shows the standard exit parameter list that the standard-format exits receive. The figure also illustrates that an exit can receive exit-dependent data starting at offset +36 (decimal) in the parameter list. In Figure 1, the offsets for the parameter entries are shown in decimal. The key, length, and data fields for each parameter entry are in hexadecimal notation.

Parameter entries describes the parameter entries and the key, length, and data fields.