thefox wrote:Try dumping it using NROM, this should get you the menu code which should be possible to reverse engineer to figure out how it's selecting the games.
Thanks for the tip, I have recorded the dump as 44100Hz Mono WAV (audacity) with 1200bps setting in TapeDump (pressing Start) but when using KCS (kcs.exe -B2 file.wav file.nes) I'm always getting message "Bad pattern at position 46955". What can be wrong? I have tried to lower the recording volume because the amp meter was out of range, but still same result (different position number).
What am I doing wrong? Using command line in Win7. Wav file is 35MB. When using -Y (ignore errors) I get "15401 bytes decoded, 2173 decode errors" and output is a 16kB file which is only garbage, no iNes header.
PS When dumping the cartridge mentioned above, I'm getting sound from Famicom for some 6:35 minutes, then sound stops. That can't be the whole cart, it has all the Rockman games on it.