Accession Number : ADD010646

Title :   Computer Hardware Executive.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Wilcox,D R

Report Date : 03 Jan 1983

Pagination or Media Count : 109

Abstract : The computer hardware executive is a special purpose associative processor which interfaces to the memory bus of a digital computer to provide high-speed execution of executive functions. These functions include task registration, task synchronization, normal, time-dependent and time-critical event registration and triggering, hierarchical event-to-semaphore translation, and buffer allocation. The programmer invokes an executive function by accessing the address in the host computer address space dedicated to that function. The data written to or read from that address is the function operand or result, respectively. The hardware executive maintains task and event tables internally within its associative memory. The memory is organized such that the same field bit position of all table entries is accessed in parallel within a microinstruction cycle. Searches are performed by sequencing through the bit positions of interest. The computer hardware executive also contains an internal clock for comparison against time-dependent and time-critical event registrations. The executive function algorithms are executed by an internal microprogram. (Author)

Descriptors :   *Patent applications, *Digital computers, *Executive routines, Subroutines, Microprogramming, Message processing, Functions, Systems engineering, Systems analysis, Computer architecture

Subject Categories : Information Science
      Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE