Specifying wrap register for storing memory address to store completion status of instruction to external device

A method of storing completion statuses comprising:

• generating a first instruction set and a first address for storing a first completion status for the first instruction set;
• receiving the first address from a processing system in a first register;
• communicating the first instruction set received from the processing system to an external device;
• receiving the first completion status from the external device;
• accessing the first register to determine the first address for the first instruction set;
• and
• storing the first completion status in the determined first address.

A computing system comprising:

• means for generating a first instruction set and a first address for storing a first completion status for the first instruction set;
• means for receiving the first address from the generating means;
• and
• means for communicating the first instruction set received from the generating means to an external device;
• wherein the communicating means receives the first completion status from the external device, accesses the receiving means to determine the first address for the first instruction set, and stores the first completion status in the determined first address.