First you need to put original rom "Duck Tales 2 (U) [!].nes" into a folder \res
to extract original resources (graphics , tilesets, and tilemaps).
Run \res\get_res.exe  to do that.

no you may delete "Duck Tales 2 (U) [!].nes" from this folder.

Run res\_pack.bat to pack/repack all resources.


Now you can compile new rom by build_dt2.bat,  or BuildROMWithSymbols.bat (this is useful with Fceux symbolic debug option).


You can edit code/insert code in any way (if enough free space), all pointers are calculated by assembler. 
The only thing you may need to adjust manually it's archives and their pointers_bankID (see archives_ptrs).


Almost all functions, variables, and commentary written in english.


.IDB base for IDA version 5.2 or greater.


Credits:
Disassembly by Ti.
Assembler asm6.exe by loopy, and asm6_sonder.exe mod by sonder.
