Must read: extracting naomi CHD into NullDC format - Page 2

_MetalliC_ · March 24th, 2009

Here is new easy way to extract/decrypt naomi CHD using MAME 130u1:
Start any Naomi GDR game using MAME
Wait message "Type OK or move joystick...." then press Esc
Look into MAME root dir - you see two new files here "decrypted <gamename>" and "encrypted <gamename>"
Just rename "decrypted <gamename>" to some thing like game.bin, make LST file and run it with nullDC-Naomi

example LST:

Code:

Game Name
"bin-file-name",   0x0000000, <length of bin-file-name>

Last edited by _MetalliC_; March 24th, 2009 at 18:24..

yesthanks · March 24th, 2009

But how do you make a LST file if you dont know the correct memory region the gd loads to????

_MetalliC_ · March 24th, 2009

Quote:

Originally Posted by yesthanks

But how do you make a LST file if you dont know the correct memory region the gd loads to????

no need to know memory region, you must only set correct file lenght
here is my LST for "Border Down"

Code:

Border Down

"bdrdown.bin",   0x0000000, 0x0D400000

beatlep · March 25th, 2009

How do i get the lenght of the bin file?

devil_iori · March 25th, 2009

Look the the file size
(Right clic Properties)
copy the number in bytes
then in windows calculator
in the menu view select cientific
paste the number
and clic in HEX

Example

Attached Images

	img1.JPG (53.3 KB, 55 views)
	img2.JPG (55.4 KB, 46 views)
	img3.JPG (51.8 KB, 48 views)

beatlep · March 25th, 2009

Quote:

Originally Posted by devil_iori

Look the the file size
(Right clic Properties)
copy the number in bytes
then in windows calculator
in the menu view select cientific
paste the number
and clic in HEX

Example

Thanks man, muy agradecido.

hb083 · March 27th, 2009

after u get hex value from calc
how do u input into bin file ?

beatlep · March 27th, 2009

Quote:

Originally Posted by hb083

after u get hex value from calc
how do u input into bin file ?

You don't have to input into bin file, you have to input into lst file.

Code:

Border Down

"bdrdown.bin",   0x0000000, 0x0D400000

hb083 · March 27th, 2009

sorry, but
i put the mame created bin file
gdrom2rom utiliy and it gives error
"can't find iso header"

then i get two 0mb files

i'm sorry i dont understand

yesthanks · March 28th, 2009

Works!
Well done that man.

shimoda · June 26th, 2009

Thanks to all the posts on how to do this. For anyone who is still converting but finds the few steps in MS-DOS a pain (opening the prompt, navigating, etc.) I wrote two quick bat files. For my own purposes I made a folder called chdtrans on my c: drive and do all of the conversion there, then simply erase the unneeded files after moving the rest. You'll need IsoBuster (free version works fine for this method and is linked elsewhere in this thread), gdrom2rom_gui.exe (google it from snk-neofighters.com), bin2iso.exe and chdman.exe (also available earlier in these posts. Place these executables in the folder you'll use (chdtrans for me) and then shortcuts for notepad, isobuster, and the two bat files I've attached (Step1.bat and rename iso to track03.bin.bat). Then follow the following steps:

1. Place whatever chd you're using (ex. slashout - gds-0004.chd) into the transfer folder.

2. Double-click the Step1.bat. Step1 renames the chd to 1.chd, runs the chdman bin extraction, deletes the 1.toc file, runs the bin2iso.exe command, then opens up notepad.

3. Replace the last entry "AUDIO" with the text "MODE1/2352" as stated in previous entries and save.

4. Drag the cue file onto your IsoBuster shortcut to open the image.

5. Right click the last track, choose Extract -> RAW DATA (bin iso etc); this will make a Track ##.iso file. Make sure to close the IsoBuster window now.

6. Double Click the rename...bat file to rename the iso to track03.bin.

7. Double click the gdrom2rom_gui.exe and type the number in for your conversion.

8. Move your two new files into your Naomi images folder and delete the remaining unneded files (labeled 1.*) If needed, the rename bat could also do this with an added line: del 1.*

This is the same process, but the bat files do save some time and hassle.

Attached Images

chdtrans folder.gif (25.2 KB, 7 views)

Attached Files

chdtrans.zip (363 Bytes, 11 views)

Nologic · June 27th, 2009

hmm wouldn't using my tool be slightly faster and easier? [Linky]

As it batch processes your Mame Rom's and CHD's. You can edit its INI file to add support for new releases.

__________________
"Pinky, you've left the lens cap of your mind on again." - The Brain

Last edited by Nologic; July 23rd, 2009 at 14:06..

March 24th, 2009	#21 (permalink)
_MetalliC_ Registered User Join Date: Feb 2009 Location: UA Posts: 2	Here is new easy way to extract/decrypt naomi CHD using MAME 130u1: Start any Naomi GDR game using MAME Wait message "Type OK or move joystick...." then press Esc Look into MAME root dir - you see two new files here "decrypted <gamename>" and "encrypted <gamename>" Just rename "decrypted <gamename>" to some thing like game.bin, make LST file and run it with nullDC-Naomi example LST: Code: Game Name "bin-file-name", 0x0000000, <length of bin-file-name> Last edited by _MetalliC_; March 24th, 2009 at 18:24..

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March 24th, 2009	#22 (permalink)
yesthanks Registered User Join Date: Sep 2008 Location: india Posts: 24	But how do you make a LST file if you dont know the correct memory region the gd loads to????

March 25th, 2009	#24 (permalink)
beatlep Registered User Join Date: Feb 2008 Location: spain Posts: 15	How do i get the lenght of the bin file?

March 27th, 2009	#27 (permalink)
hb083 Registered User Join Date: Jan 2008 Location: vancouver Posts: 24	after u get hex value from calc how do u input into bin file ?

March 27th, 2009	#29 (permalink)
hb083 Registered User Join Date: Jan 2008 Location: vancouver Posts: 24	sorry, but i put the mame created bin file gdrom2rom utiliy and it gives error "can't find iso header" then i get two 0mb files i'm sorry i dont understand

March 28th, 2009	#30 (permalink)
yesthanks Registered User Join Date: Sep 2008 Location: india Posts: 24	Works! Well done that man.

June 27th, 2009	#32 (permalink)
Nologic Registered User Join Date: Apr 2007 Location: some where Posts: 81	hmm wouldn't using my tool be slightly faster and easier? [Linky] As it batch processes your Mame Rom's and CHD's. You can edit its INI file to add support for new releases. __________________ "Pinky, you've left the lens cap of your mind on again." - The Brain Last edited by Nologic; July 23rd, 2009 at 14:06..