Operation Codes

Each file operation which can be performed by the File Handler is identified by a two-byte operation code.

There are two types of operation code:

Type of Operation Code Description
Standard operation codes The codes contain x"FA" in the most significant byte. The least significant byte indicates the specific operation.
Special operation codes The codes contain x"00" in the most significant byte. The least significant byte indicates the specific operation.

Full lists of standard and special operation codes and links to detailed information are provided in the topics Standard Operation Codes - Overview and Special Operation Codes - Overview.