Accession Number : ADA028987


Title :   A Virtual Memory System for the PDP-10 KA10 Processor.


Descriptive Note : Final technical rept. Jul 75-Mar 76,


Corporate Author : CALIFORNIA UNIV LOS ANGELES DEPT OF COMPUTER SCIENCE


Personal Author(s) : McNamee,L P


Report Date : Jun 1976


Pagination or Media Count : 98


Abstract : This report describes the development of the Large Space Virtual Memory System for operation with a Digital Equipment Corporation PDP-10 Computer system. The virtual memory system modifies the KA10 instruction set and addressing mechanisms to provide a virtual memory address space of 2 to the 36th power 36-bit words. Each address consists of a 9 bit segment number and a 27 bit within segment address. The VM control programs are based on a new page replacement algorithm, the Page Fault Frequency (PFF) Replacement Algorithm, called the Shared PFF (SPFF). (Author)


Descriptors :   *COMPUTER PROGRAMMING , *MEMORY DEVICES , *DIGITAL COMPUTERS , COMPUTER PROGRAMS , COMPUTER PROGRAM DOCUMENTATION , ALGORITHMS , INTERFACES , FORTRAN , MACROPROGRAMMING , INFORMATION SCIENCES , ADDRESSING


Subject Categories : Computer Programming and Software
      Computer Hardware


Distribution Statement : APPROVED FOR PUBLIC RELEASE