Shmups Forum
* FAQ    * Search
 * Register  * Login 
It is currently Wed May 27, 2020 10:23 pm View unanswered posts
View active topics

Post new topic Reply to topic  [ 2 posts ] 
Author Message
 Post subject: Gunnail alarm fix tutorial
PostPosted: Thu Oct 10, 2019 12:35 am 

User avatar

Joined: 31 Aug 2009
Posts: 7516
Location: 東京都杉並区
DenT4F asked me to make a dummy-proof tutorial on how to actually do this, so here's some pretty pictures and intricate steps. This is a sequel to my very terse explanation here

Step 1: Download a hex editor

My personal favorite hex editor for Windows is HxD ( ). Download it -- if you downloaded an installable version, install it as well -- and launch it.

Step 2: Extract

Unzip into a folder called gunnail. You should end up with a folder that looks like this:

NOTE! If you have 92077_2.bin instead of 92077_2.u101, you MUST rename it to the latter.

Step 3: Open the sound ROM

Drag the file named 92077_2.u101 into HxD. You should end up with a screen like this:

If you are dumping the ROM from your own board, this is the ROM with "2" on the label.

Step 4: Go to 0x52E6

Press Ctrl+G to open the "Go" window. Type 52E6 in the Offset field, and ensure that 'hex' and 'begin' are selected.

Press Enter or click OK, and your screen will look like this:

Step 5: Change the value to CD

Now you can type the new volume you want for the alarm. You can type any of: "FD", "ED", "DD", "CD", "BD", "AD", "9D" or "8D". "8D" is the loudest possible, and "FD" is the quietest possible (nearly inaudible). I personally like "CD", as it is audible but not overpowering.

Step 6: Save the changes

Press Ctrl+S, or select Save from the File menu, to save the file. Your screen will look like this now (notice the red is gone, as is the *modified* text)

Step 7: Play!

Do not zip the folder. If you absolutely must, you must remove the .bak file that was created. You can leave the old zip file and there should be no impact. You could also delete it if you'd like.

MAME will warn you about the ROM not matching or having a checksum error, which may require launching the game through command line. You will still have a checksum error but that means that it works :)
@trap0xf | | scores | FIRE LANCER
<S.Yagawa> I like the challenge of "doing the impossible" with older hardware, and pushing it as far as it can go.

Last edited by trap15 on Thu Oct 10, 2019 2:09 am, edited 4 times in total.

 Offline Profile  
 Post subject: Re: Gunnail alarm fix tutorial
PostPosted: Thu Oct 10, 2019 1:08 am 

User avatar

Joined: 03 Sep 2014
Posts: 89
Location: Montreal, CAN
Thank you!!! :D

 Offline Profile  
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 2 posts ] 

All times are UTC

Who is online

Users browsing this forum: Nifty, pegboy, Plasmo and 9 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
Space Pilot 3K template by Jakob Persson
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group