IAS I/O Operations Reference Manual

This reference manual describes the File Control Services (FCS) facility available for IAS operating system users. It covers data structures (such as the File Descriptor Block and Filename Block), preparation for I/O at assembly and run-time, and file-processing macro calls. It also details file structures for disk, DECtape, and magnetic tape, along with command line processing routines (GCML and CSI) and the table-driven parser (TPARS). The manual is intended for MACRO-11 and FORTRAN programmers working in an IAS environment.