Intel 386 Family Binary Compatibility Specification 2

A working manual to the second release of the IBCS for UNIX-based systems, providing ready-to-apply information on low-level instructions, object files, libraries, system file formats and system commands and execution environments. The IBCS establishes a standard binary interface for application programs on systems that implement the interfaces defined in the "UNIX System V Interface Definition, Issue 2". The guide contains practical information specific to UNIX implementations built on the Intel386 processor architectures, constituting a complete Binary Compatibility Specification for systems that implement the architecture of the Intel386 processors, including any system built with the Intel486 processor and future compatible processors.