Double Dragon bootleg alternate set 2 (with 6809)

This romset comes from a bootleg/hacked pcb.Game differences are: Copyright string modified to "1987 DOUBLE DRAGON 1987",boss of level 4 is colored like level 1 and 5 instead of green and is invulnerable to rocks attack. 
Note: At rom/ram check ROM3 results in error.I don't know if it's due to hacking or bad rom properly that causes behaviour above.For rest,the game is fully tested and no issue appears.

Hardware info:
Main cpu 68B09 x2
sound cpu 68B09
sound ics YM2203 x2, 5205 x2
Osc 24 Mhz, 19.6608 Mhz, 400 Khz

Rom defintion:
21 to 17 main program
16 to 14 sound program
1 to 13 and 22 to 29 graphics
All eproms are 27c256, 27c512

Dumped by tirino73 >isolani@interfree.it<