ROM Hack NDS PAC files

[nIxx]

Hi
someone knows the structure of .pac files especially for the NDS game Riz Zoawd
or can help me with it ?
For example b001.pac starts like this

00000000 10 60 93 01 11 06 00 00 20 01 38 93 01 40 09 C0 .`...... .8..@..
00000010 F0 06 10 22 42 4D 44 30 FF FE 41 02 20 27 10 00 ..."BMD0..A. '..
00000020 02 00 18 00 37 00 BC 2F 00 00 4D 44 4C 30 41 A4 ....7../..MDL0A.

 

[psycoblaster]

flag 10 most likely means it is lz77 compressed

 

[nIxx]

Thank you.
I though something like this but i was not sure.