The initial contents of register 4 point to a parameter list that your routine can fill with the network identifier and resource name.

Register 0:

Length of logon message (any length from 1 to 80 bytes)

Register 1:

Address of first byte of logon message (see note in Operation)

Register 2

Address of an 8-byte LU name

Register 4:

Address of parameter list for network identifier and resource name

Offset

Description

0–27

Information about fixed or interpreted name

28

Uninterpreted name

Register 13:

Address of a 72-byte save area provided by VTAM®

Register 14:

Return address

Register 15:

Address of entry point of this routine