Type ASSEMBLE
Source Lines : 4,419
Fixes Applied : 15
Most Recent Version : Tuesday, December 12, 1978
Last Fix ID : [HRC342DS]

Module

       DMSEDI (EDIT)

Function

       TO MODIFY THE CONTENTS OF AN EXISTING FILE OR TO CREATE
       A NEW FILE.

Attributes

       DISK RESIDENT

Operation

       THE EDIT MODULE IS LOADED INTO STORAGE BY THE EDIT
       INITIALIZATION MODULE, DMSEDX. IT MAY RESIDE IN A
       DISCONTIGUOUS SEGMENT OR IN USER STORAGE. DMSEDX
       GETS FREE STORAGE FOR AND INITIALIZES THE EDIT
       FREE WORKING STORAGE (EDCB), THEN LOADS AND
       BRANCHES TO THE EDIT MODULEWITH REGISTER 1
       CONTAINING THE ADDRESS OF EDCB.
       UPON ENTRY, A MESSAGE IS TYPED TELLING THE
       USER HE IS IN THE EDIT ENVIRONMENT AND 'WAITRD' IS CALLED
       TO READ A LINE FROM THE TERMINAL. IF A NULL LINE IS ENTERED,
       ANOTHER READ FROM THE TERMINAL IS EXECUTED.
       IF THE LINE IS NOT NULL, THE FIRST ENTRY ON THE LINE IS
       ASSUMED TO BE AN EDIT SUB-COMMAND; IF IT IS, A BRANCH IS
       TAKEN TO THE APPROPRIATE EDIT SUB-ROUTINE TO PROCESS THE
       COMMAND.
       IF THE FIRST ENTRY IS NOT RECOGNIZED AS A SUB-COMMAND,
       AN ERROR MESSAGE IS ISSUED TO THE TERMINAL AND ANOTHER
       READ IS ISSSUED TO THE TERMINAL.

Calls to Other Routines

       DMSSCR - WRITE TO DISPLAY TERMINAL
       DMSBWR - WRITE A FILE TO DISK
       DMSBRD - READ A FILE FROM DISK
       DMSSTT - VERIFY EXISTENCE OF A FILE
       DMSRNM - ALTER FILEID
       DMSCWRB - TYPE INFORMATION TO USER CONSOLE
       DMSCWT - WAIT ON CONSOLE I/O
       DMSCRD - WAIT ON CONSOLE RESPONSE
       DMSCAT - STACK CONSOLE INPUT
       DMSERS - ERASE UTILITY FILES
       DMSFNS - 'CLOSE' A FILE