IAS FORTRAN Special Subroutines

This reference manual describes subroutines for the IAS operating system designed for FORTRAN programmers. The manual covers three main functional areas: subroutines compliant with the Instrument Society of America (ISA) standard, device-specific subroutines for interfacing with hardware like A/D converters and the UDC-11 controller, and subroutines to issue IAS system directives. It includes details on subroutine usage, task scheduling, bit string manipulations, and a comprehensive index of subroutines and error return codes.