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 Corrupted ROMs
 
Argument: ROM data , Closed by: root
kirkor @ 2014-03-17 18:46:19

-Dancing Blocks (Asia) (PAL) (Unl) - wrong header
-Sidewinder (Australia) (Unl) - completely corrupted rom
-Silent Assault (Asia) (PAL) (Unl) - wrong header
-Metal Fighter (Asia) (Sachen) (Unl) - wrong header

I checked them with creator of puNES emulator (it is the most accurate NES emulator up to date so he knows what he is saying). Also these ROMs wont play on any emulator (Nestopia, etc.). When you use ROMs of these games from GoodTools they work no problem. No-Intro just have some bad roms and it can be more of them as I havent checked everything (in fact there is much more to test). They are mostly (Unl) and Chinese games. I guess no one reports becasue when people test them on emulators, they think they are not supported but in fact they are corrupted. It can be very misleading.
User_1234 @ 2015-02-10 11:45:37

You have no idea clearly,
No-Intro only dat the 'data area' of the ROM,
so when using a program like CMP with header skipper plugin.
1. A file without a header will match (Not playable)
2. A file with right 'data area' CRC but any header (right or wrong) will match (Maybe playable)

Using CMP & Dat without header skipper, will only find headerless ROMs (Not playable)

I assure you all the files you listed play perfectly in Nestopia...
Some require an entry in Nestopia's internal (or ext) database xml file such as
Dancing Blocks (Asia) (PAL) (Unl) - once the ROM exists in the database, it doesn't matter what info is in the header (as long as it has a header) the file will play just fine :)