OCOMP - COMPARE & DUMP FILES UNDER A MASK 1978 APRIL 3 T.C. DEFAULT OUTPUT IS TO TTY: DEFAULT OUTPUT EXTENSION IS .LS THE MASK IS SPECIFIED AS THE LEAST SIGNIFICANT 12 BITS OF '=N'. 1) COMPARE: TWO INPUT FILES ARE COMPARED UNDER A MASK. IF SECOND IN- PUT DEVICE IS SPECIFIED WITH NO FILENAME, THE FIRST INPUT FILENAME IS REUSED. IF MASK=0, 7777 IS USED. 2) DUMP: ONE INPUT FILE. DUMP ALL WORDS WITH NO MASK BITS OFF. IF MASK=0, 7777 IS USED. 3) SEARCH: ONE INPUT FILE WITH /S; DUMP ALL WORDS EQUAL TO THE MASK. THE COMMAND DECODER IS RECALLED AFTER THE SPECIFIED OPERATIONS ARE COMPLETED UNLESS INPUT WAS TERMINATED BY AN 'ESCAPE' OR 'ALTMODE'. OTHER COMMAND DECODER OPTIONS: /I IMAGE MODE INPUT FILE IS CORE IMAGE (SAVE) FILE. DEFAULT INPUT EX- TENSION IS .SV. ADDRESSING IS BY MEMORY ADDRESS, RATHER THAN BY FILE ADDRESS. /C CCB OUTPUT WHEN COMBINED WITH /I, CCB IS PRINTED AS PART OF THE RUN TITLE. /D DIFFERENCE MODE ONLY OUTPUT IS A MESSAGE TELLING THAT FILES COMPARED ARE SAME OR DIFFERENT. /F FORM FEED ALL BLOCKS WHICH CAUSE OUTPUT HAVE THEIR OUTPUT PRECEEDED BY A FORM FEED CHARACTER. /T TELETYPE OUTPUT FORMAT IS NARROWED FOR OUTPUT TO 72 COLUMN DEVICES SUCH AS TELETYPES OR VIDEO TERMINALS. /H HEADER OUTPUT HEADER LINE EVEN IF OUTPUT DEVICE IS TTY:. ERRORS ARE INDICATED BY A "USER ERROR ..." MESSAGE. THE PROGRAM IS NOT RESTARTABLE. ERROR CONDITION 1 MORE THAN TWO INPUT FILES 2 OUTPUT FILE TOO SMALL 3 OUTPUT HANDLER FETCH OR ENTER FAILED 4 INPUT HANDLER FETCH OR LOOKUP FAILED 5 INPUT FILE #1 ERROR 6 INPUT FILE #2 ERROR 7 OUTPUT FILE ERROR 8 OUTPUT FILE CLOSE FAILED 9 CCB DECODE ERROR