Back to: Nintendo - Family Computer Disk System

SD Gundam World - Gachapon Senshi - Scramble Wars - Map Collection
 
Category: ROM data
Reference: 2298
Closed (accepted) by: root.
hkA » 2016-04-14 08:03:55

now:
SD Gundam World - Gachapon Senshi - Scramble Wars - Map Collection (Japan) [b]

fix:
SD Gundam World - Gachapon Senshi - Scramble Wars - Map Collection (Japan) (Disk Writer) [b]

--
The current number in the file list is invalid.
0039:10->0F

It was sold only in the disk writer.

reference:
http://park19.wakwak.com/~fantasy/fds/softlist/fds_all.htm
C. V. Reynolds » 2016-04-14 19:44:45

The file is not invalid. It was dumped by our own HardcoreHubz. The disk itself would need to be invalid in that case.

Conclusions: Either A: The disk writer allowed that byte to be 10, or B: The game wasn't exclusive to disk writers.

I'd bet on conclusion A.

That link suggests a lot of our files need to potentially be marked with "Disk Writer".

Thank you. I'll check into all this.
hkA » 2016-04-15 09:41:16

Current disk can not boot .
Error No.24 will be displayed .

Data of Ototo is file list 15.
>ファイル数 15

At least the data is suspicious.
C. V. Reynolds » 2016-04-15 21:31:26

Something is certainly wrong. Perhaps the disk itself really is invalid.

This may call for a "trusted modification" to fix this for now. Regardless, we should be sure it isn't the emulators failing this. Can you or anyone else try to run this on a real system?

I'll also ask HardcoreHubz to redump if possible.

Thank you.
C. V. Reynolds » 2016-04-15 21:55:48

I was mistaken about the byte in question. It's a checksum byte. Certainly odd.

Both wild examples of this game have the same "10" in that location, but not 0F. I don't understand this. Three dumps with the same checksum bytes in the header. We should definitely check to see if it works on a real console.
C. V. Reynolds » 2016-04-15 23:09:20

Never mind. I figured out what was wrong.

It was my fault because, get this, I was trying to rigidly follow Ototo without regard to what it meant. I thought I could edit things correctly, but no. "Getting too big for my britches" and whatnot.

I apologize.

For reference: Despite Ototo's site saying the game creates the "GAMESAVE" file... you don't want to edit out the GAMESAVE file. It just doesn't work then. Maybe it's different on a sealed disk, but on a used disk? Modifying can be bad, even if you're pretty sure you're making the right move.

Long story short? I clipped too much out while removing the save data! Stupid me!

As for why I missed this? I only tested BEFORE and forgot to test AFTER. This should be a lesson in a few things. One of which is that I work hard, but am too prone to mistakes currently. I'm always looking to improve however, and I appreciate anyone's support in making me better. Thank you.
C. V. Reynolds » 2016-04-15 23:18:37

If anyone has the previous mistake and wants to repair it:

Replace bytes 51052 through 51068 (DEC mode) or C76C through C77C (HEX mode) with the following:

03 0F 80 47 41 4D 45 53 41 56 45 00 65 80 04 00 04