*-----------------------------------------------------------
* Title      : Wat?!
* Written by : Me and that other guy
* Date       : Today
* Description: Dunno
*-----------------------------------------------------------
    ORG    $1000    
START:                  ; This is where the program starts - obviously

* Put program code here

    ; Clear variables
    clr.l   Sum
    
    ; Load string address
    move.l #String1, A0
    move.l #String2, A1
    move.l #String3, A2

LOOP:
    ; Load chars to register
    move.b (A0), D0
    move.b (A1), D1
    
    ; If end of string is reached end loop
    cmp.b   #0, D0
    beq     LOOP_END

    ; If String2[i] <= String1[i] jump to ADD_STRING2
    cmp.b   D0, D1
    ble     ADD_STRING2

; Add lower char to Sum
ADD_STRING1:
    add.l   D0, Sum
    move.b  D0, (A2)
    bra     LOOP_FOOTER
ADD_STRING2:
    add.l   D1, Sum
    move.b  D1, (A2)

; Move to next char
LOOP_FOOTER:
    add.l   #1, A0
    add.l   #1, A1
    add.l   #1, A2
    bra     LOOP

LOOP_END:
    ; Add '\0'
    move.b  #0, (A2)

    SIMHALT             ; halt simulator

* Put variables and constants here

String1 dc.b    'Studierender',0
String2 dc.b    'Informatiker',0
String3 ds.b    13
Sum     ds.l    1

    END    START        ; last line of source


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