110931 Extended Overlays for RT-11/TSX-PLUS Version: January 1991 Submitted by: Dr. Roger N. Caffin, Berrilee Consulting Services Operating System: RT-11 V5 Source Language: VAX FORTRAN Keywords: Utilities - RT-11 Abstract: Conventional wisdom limits overlays under RT-11 and TSX-PLUS to a tree structure. Violation of the tree structure normally destroys the subroutine calling paths and crashes the program. This, combined with the number of overlay regions available, places a severe limit on the size of programs which can be run. However, it is possible to bypass this restriction and have arbitrary calling paths and much bigger programs provided you have enough memory to have the entire overlay structure in extended memory. No modifications to any software are required for this, just the ability to interpret link maps and do some planning of overlay structures. This submission contains full documentation explaining how this is done and sample programs illustrating the process. Notes: Executable and/or object code is included. Media (Service Charge Code): One RX50 Diskette (JA) Format: RT-11, 600' Magnetic Tape (MA) Format: RT-11