Bomb Jack bootleg alternate set on "inferior" hardware

This romset comes from a bootleg pcb released by the "company" Seo Jin.Game differences are none.
Hardware info:
Main cpu Z80A
Sound cpu Z80
Sound ic AY-3-8910 PSG x2*
OSC 12 and 4 Mhz

*Note:There is not present one PSG (the middle precisely),probably to reduce production costs.So,some sfx are missed :When you die.
Sound cpu ram was been reduced,too:The 6116 was been replaced by two 2114.

Rom definition:
bjb_13 and bjb_14 part of main program.The first half of eproms are identical to 11_m01b and 09_j01b respectively,the second half to 12_n01b and 10_l01b 
The rest are identical to existing set 1.
Eproms are 27128

Dumped by tirino73 >isolani@interfree.it<