Interface card between a user port and parallel bus, with dictionary of universal commands which allows use of any application especially of the standard type ARINC (Aeronautical Radio Incorporated) l429 or 571

摘要

The card shared memory for transmitted data, input/output management and machine time management. It includes a group of registers as interface between a number of AIA type bus systems and a number of parallel bus systems. The interface controls communication between these bus systems. Method in which a universal interface composed of translation registers for data between several AIA bus types and several parallel bus types Method of interface control in which semaphores share the resource between the different bus systems according to the following process; (a) the user takes the semaphore;the user checks that it has been obtained;if the semaphore is not free the request is memorized;the user releases the semaphore to free the resource