TOPS-20 Commands Reference Manual

REENTER

Starts the current fork at its alternate entry point.

Format

@REENTER (PROGRAM)

Characteristisc

Using REENTER

The REENTER command starts your program at the address specified by the second word in the program's entry vector. For most programs this address is contained in location 124. Usually the REENTER and START commands start the program at the same point, but another re-entry point can be provided to avoid initialization procedures, perform error recovery, or to use the program in a different way.

Hints

Further Information

For more information about entry vectors, see the TOPS-20 Monitor Calls Reference Manual.

Related Commands

GET for placing an executable program in memory
LOAD for loading a source or object program into memory
START for entering a program at its normal entry point

Examples

  1. Give the REENTER command for your current program. 
    @REENTER
  2. Begin running a program, then give a CTRL/C to leave it and obtain a file. Resume execution of the program at the alternate entry point. 
    @R DUMPER
DUMPER>^C
@ACCESS PS:<P.SPECCINI>
Password:___
@COPY PS:<P.SPECCINI>USR.FIL
 PS:<P.SPECCINI>USR.FIL.1 => USR.FIL.1 [OK]
@END-ACCESS PS:<P.SPECCINI>
@REENTER
DUMPER>