Unix STREAMS Emulation of an Input/Output Controller (IOC) for an Embedded AN/UYK-44(V) Processor.

摘要

This report presents the implementation of a software interface between a Unix operating system executing on a Navy DTC-2 VMEbus computer workstation and a VMEbus AN/UYK-44(V) enhanced processor (EP) embedded within that workstation. The interface software employs the Unix STREAMS mechanism to emulate the AN/UYK-44(V) input/output controller (IOC) function. Emulated capabilities include IOC page register groups, multiple input/output controllers, input, output, external function, and forced external function transfers, and external interrupt. The AN/UYK-44(V) application directs the interface by supplying AN/UYK-44(V) command instructions and chain programs in memory. The Unix application communicates with the interface using the Unix file system calls. Command control, Software tools, Computer sciences, Support software, AN/UYK-20/43144.