MAIN    START
        LAD     GR3,0           ; Xのインデックス
LOOPX   CPA     GR3,XCNT
        JZE     FIN
        LD      GR1,X,GR3
        LAD     GR4,0           ; Yのインデックス
LOOPY   CPA     GR4,YCNT
        JZE     XNEXT
        LD      GR2,Y,GR4
        OUT     SEP,SLEN
        CALL    OUTA
        PUSH    0,GR1
        LD      GR1,GR2
        CALL    OUTA
        POP     GR1
        CALL    MULA
        JOV     WOV
        PUSH    0,GR1
        LD      GR1,GR0
        CALL    OUTA
        POP     GR1
YNEXT   OUT     SEP,SLEN        
        LAD     GR4,1,GR4
        JUMP    LOOPY
WOV     OUT     YOMSG,YLEN
        JUMP    YNEXT
XNEXT   LAD     GR3,1,GR3
        JUMP    LOOPX
FIN     RET
X       DC      0,1,2,127,128,151,217,255,256,257,32767,-32768,-32767,-257,-256,-255,-217,-151,-128,-127,-2,-1
Y       DC      0,1,2,127,128,151,217,255,256,257,32767,-32768,-32767,-257,-256,-255,-217,-151,-128,-127,-2,-1
XCNT    DC      22
YCNT    DC      22
SEP     DC      '--------------------'
SLEN    DC      20
YOMSG   DC      'Warning: overflow'
YLEN    DC      17
        END