[hatari-devel] Moongame, question

[Laurent Sallafranque <laurent.sallafranque@xxxxxxx>]

Hi,

I've given another try to Moongame.

The mouse doesn't move in the main menu.
The program always display : Illegal instruction 00e0 at 00000030 -> 
0005D0D6
It's always the same error at the same place.

The disasm code is (I've added some comments, they may be false):

$05e6b6 : 48e7 fffe                            movem.l   d0-d7/a0-a6,-(sp)

$05e6ba : 11f8 044f 8201                       move.b    
$044f.w,$ffff8201.w    // Video screen memory position (High byte)
$05e6c0 : 11f8 0450 8203                       move.b    
$0450.w,$ffff8203.w    // Video screen memory position (Mid byte)
$05e6c6 : 2e39 000d d222                       move.l    $dd222,d7
$05e6cc : 46fc 2700                            move      #$2700,sr

$05e6d0 : 0838 0000 fc00                       btst      
#0,$fffffc00.w        // Keyboard ACIA control
$05e6d6 : 6706                                 beq.s     $5e6de
$05e6d8 : 1238 fc02                            move.b    
$fffffc02.w,d1        // Keyboard ACIA data
$05e6dc : 60f2                                 bra.s     $5e6d0

$05e6de : 21f9 000d d216 0118                  move.l    $dd216,$0118.w
$05e6e6 : 0038 0008 fa17                       ori.b     
#8,$fffffa17.w        // MFP Vector Register ???
$05e6ec : 21f9 000d d21a 0070                  move.l    $dd21a,$0070.w
$05e6f4 : 21c7 fa06                            move.l    
d7,$fffffa06.w        // only $fffffa07 seems to exist ???

$05e6f8 : 46fc 2300                            move      #$2300,sr

$05e6fc : 4cf9 00ff 000d d22a                  movem.l   $dd22a,d0-d7
$05e704 : 48f8 00ff 0180                       movem.l   d0-d7,$0180.w
$05e70a : 4cf9 00ff 000d d24a                  movem.l   $dd24a,d0-d7
$05e712 : 48f8 00ff 01a0                       movem.l   d0-d7,$01a0.w

$05e718 : 7eff                                 moveq     #$ff,d7
$05e71a : 51cf fffe                            dbra      d7,$5e71a

$05e71e : 4cdf 7fff                            movem.l   (sp)+,d0-d7/a0-a6
$05e722 : 4e75                                 rts



The running trace displays :

[...]

cpu video_cyc=160290 159778@314 : 0005E71A 51cf fffe                DBF 
..W D7,#$fffe == $0005E71A (F)
cpu video_cyc=160296 159784@314 : 0005E71A 51cf fffe                DBF 
..W D7,#$fffe == $0005E71A (F)
cpu video_cyc=160302 159790@314 : 0005E71A 51cf fffe                DBF 
..W D7,#$fffe == $0005E71A (F)
cpu video_cyc=160308 159796@314 : 0005E71A 51cf fffe                DBF 
..W D7,#$fffe == $0005E71A (F)
cpu video_cyc=160314 159802@314 : 0005E71A 51cf fffe                DBF 
..W D7,#$fffe == $0005E71A (F)
cpu video_cyc=160320 159808@314 : 0005E71A 51cf fffe                DBF 
..W D7,#$fffe == $0005E71A (F)
cpu video_cyc=    98  98@  0 : 00000000 602e                     BT .B 
#$0000002e == $00000030 (T)
cpu video_cyc=   104 104@  0 : 00000030 00e0                     ILLEGAL.L
cpu video_cyc=   128 128@  0 : 0005D0D6 4eb9 0008 0c82           JSR.L 
$00080c82
cpu video_cyc=   138 138@  0 : 00080C82 48e7 ffc0                MOVEM.L 
D0-D7/A0-A1,-(A7)
cpu video_cyc=   184 184@  0 : 00080C86 4eb9 0005 e724           JSR.L 
$0005e724
cpu video_cyc=   194 194@  0 : 0005E724 48e7 fffe                MOVEM.L 
D0-D7/A0-A6,-(A7)
cpu video_cyc=   260 260@  0 : 0005E728 4eb9 0005 e79e           JSR.L 
$0005e79e
cpu video_cyc=   270 270@  0 : 0005E79E 48e7 0380                MOVEM.L 
D6/D7/A0,-(A7)
cpu video_cyc=   288 288@  0 : 0005E7A2 7cff                     MOVE.L 
#$ffffffffffffffff,D6
cpu video_cyc=   290 290@  0 : 0005E7A4 51ce 0004                DBF .W 
D6,#$0004 == $0005E7AA (F)
cpu video_cyc=   296 296@  0 : 0005E7AA 41f9 000d d7aa           LEA.L 
$000dd7aa,A0
cpu video_cyc=   302 302@  0 : 0005E7B0 3e3c 003f                MOVE.W 
#$003f,D7

[...]


Does this ring a bell to someone ?

It seems that at least keyboard is involved in this part of the code.
May it be related to 6301 code ?

Any help would be appreciate.

Regards

Laurent