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