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Dasha66: Thanks a lot for the script !
You're welcome!
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shmerl: I made a script for extracting the ROM files (thanks for help from Castlevania community about offsets and header data):

See here: https://gist.github.com/shmerl/202332219bebb5e5135ad41140f8f6d5
Question: If those ROM files are extracted, you could just run them in another NES emulator or MAME, and they'd run, correct?
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TheBigCore: Question: If those ROM files are extracted, you could just run them in another NES emulator or MAME, and they'd run, correct?
Yes! I only tested them in Nestopia though.
Post edited February 19, 2021 by shmerl
[A bunch of silly stuff about not being able to run the script.}

Never mind, I figured out how to use it. Thanks for the super-helpful script, Shmerl!
Post edited May 01, 2021 by admozb
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admozb: [A bunch of silly stuff about not being able to run the script.}

Never mind, I figured out how to use it. Thanks for the super-helpful script, Shmerl!
I found a way using "misanthroat" and "blakstar" post. (Thnx both of you!!!)

Using bash in Win10. Use following commands 1 by 1.

NES ROM Header

dd if=cc.exe skip=1041776 bs=1 count=16 > nes_header

dd if=cc.exe skip=124272 bs=1 count=131072 > castlevania

cat nes_header castlevania > castlevania.nes

dd if=cc.exe skip=255344 bs=1 count=262144 > castlevaniaii

cat nes_header castlevaniaii > castlevaniaii.nes

dd if=cc.exe skip=517488 bs=1 count=393216 > castlevaniaiii

cat nes_header castlevaniaiii > castlevaniaiii.nes

dd if=cc.exe skip=910704 bs=1 count=131072 > contra

cat nes_header contra > contra.nes

dd if=cc.exe skip=1041792 bs=1 count=131072 > jackal

cat nes_header jackal > jackal.nes

dd if=cc.exe skip=1172864 bs=1 count=262144 > superc

cat nes_header superc > superc.nes

After this repair the headers with this:
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blakstar: I downloaded the following:
NES header database: http://forums.nesdev.com/viewtopic.php?f=3&t=19940 (nothing illegal, just an XML database)
NES Header Repair python script: https://github.com/Kitrinx/NES_Header_Repair
I unzipped them both in the same directory as my reconstructed NES ROMs, and ran the script. Please note that it does a trial run to make sure that everything is OK -- to actually make any changes, you have to edit the script and change TRIAL RUN from 1 to 0.
Post edited May 02, 2021 by Jonathan_The_Gamer