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Normal user Level: 20 Posts: 11/77 EXP: 38995 Next: 3444 Since: 10-09-15 Last post: 2097 days ago Last view: 2013 days ago |
One of the obscurities in the DSi world is that we know that the DSi supports a "banner.sav". But we don't know what that banner.sav is good for, what kind of fileformat it might have, or if that feature was ever used by any existing DSi games.
The only reference is at http://dsibrew.org/wiki/DSi_Cartridge_Header - does anybody know more about it? |
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Newcomer Normal user Level: 3 Posts: 1/1 EXP: 57 Next: 71 Since: 10-12-15 Last post: 3324 days ago Last view: 3205 days ago |
I think that it is used in the Brain Age express games so that the animated banner will show you how many stamps you have earned (as well as the drawing that you made for the stamps). |
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Normal user Level: 20 Posts: 13/77 EXP: 38995 Next: 3444 Since: 10-09-15 Last post: 2097 days ago Last view: 2013 days ago |
Thanks, good to know! Did anybody already dump that banner file from eMMC? Or know which exact Brain Age express title(s) are using it (or if any other games use it, too)?
Anyways, great to know that the feature was ever used, and where to start searching. |
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Newcomer Normal user Level: 7 Posts: 1/7 EXP: 1063 Next: 385 Since: 11-14-15 Last post: 3074 days ago Last view: 2963 days ago |
![[image]](https://i.imgur.com/EWkJC0u.gif) ![[image]](https://i.imgur.com/nQGV7gF.gif) ![[image]](https://i.imgur.com/2bancX5.gif) ![[image]](https://i.imgur.com/x1myq95.gif)
In the Brain Age express games, these are called 'SubBanner'. Here's the layout of the SubBanner folder in one of the game's ROM filesystem: SubBanner
icon_sub_bnr.zbi and nou.zbi are icons(compressed). The other two files are a graphic containing numbers and its palette(also compressed). I guess the game builds the icon that gets used for banner.sav out of that icon and the number graphic.
| icon_sub_bnr.zbi | nou.zbi | +---Character | Number.zcg | \---ColorPalette Banner.zcl The format for the icons is slightly different from the icons built into the ROMs. There's the version at 0x00, some 2 byte value at 0x08, room for 8 image frames at 0x20, room for 8 palettes at 0x1020, then animation frame info at 0x1120. I'm going to check these games out on my 3DS and see if I can get them to make a banner. If they do, I'll extract one for you. Although, I'd imagine it'd be the exact same format as the icons above, just with modified frames. --------------- EDIT: Ok, extracted a banner.sav for the Brain Age Express Sudoku game. Its location in the NAND was 'title\00030004\4b4e3945\data\banner.sav' Here's a GIF of its animation: ![[image]](https://i.imgur.com/QOxjRhP.gif)
Compare that to the raw icon from the ROM's FS at the top of my post. It has just had a '2' overlaid on some frames. And here's the banner.sav: https://www.mediafire.com/?1meim3c09avxc7f Format is as I predicted, exactly the same as what I described earlier. Looks like the file is larger, but I think everything from 0x11A0 onwards is just 'decrypted' junk(as in, it was probably 0xFFs on the NAND. Didn't bother checking). Hope it's OK to share this here. |
| plutoo |
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Member Normal user Level: 11 Posts: 17/19 EXP: 4795 Next: 1190 Since: 09-17-15 Last post: 3272 days ago Last view: 3195 days ago |
Could this be the banner used for save-games in the data-management tool? Just a guess based on the file-name. |
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Newcomer Normal user Level: 7 Posts: 2/7 EXP: 1063 Next: 385 Since: 11-14-15 Last post: 3074 days ago Last view: 2963 days ago |
On my 3DS at least, once the banner.sav exists it replaces the game's own icon anywhere you can see it. Like on the home menu and the DSi data management screen. |
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Normal user Level: 20 Posts: 27/77 EXP: 38995 Next: 3444 Since: 10-09-15 Last post: 2097 days ago Last view: 2013 days ago |
Thanks for the info on the Brain Age Express Sudoku banner.sav! I was half expecting the file to be 23C0h or 4000h bytes in size (since DSi is often rounding up filesizes to 16K cluster sizes).
I didn't expect the file to contain only 11A0h actually bytes though. The normal 23C0h-byte Icon/Title structure contains an additional non-animated icon, and several title strings, which don't exist in the banner file. The 2 bytes at 0008h contain a CRC, and the other stuff is same as the animation data in normal Icon/Title. With everything puzzled together, my new description for the gbatek doc looks as so: FAT16:\title\000300tt\4ggggggg\data\banner.sav ;if carthdr[1BFh].bit2=1
Some DSi games are having a separate "banner.sav" file stored in the eMMC filesystem, enabled via carthdr[1BFh].bit2 (allowing to indicate the game progress by overriding the default icon). The banner files are 4000h bytes in size, the animation data is same as above, but without title strings and without non-animated icon. 0000h 2 Version (0103h) 0002h 6 Reserved (zero-filled) 0008h 2 CRC16 across entries 0020h..119Fh (with initial value FFFFh) 000Ah 16h Reserved (zero-filled) 0020h 1000h Icon Animation Bitmap 0..7 (200h bytes each) ;\same format as 1020h 100h Icon Animation Palette 0..7 (20h bytes each) ; in Icon/Title 1120h 80h Icon Animation Sequence (16bit tokens) ;/ 11A0h 2E60h Garbage (random values, maybe due to eMMC decryption) The feature is used by some Brain Age Express games (for example, Brain Age Express Sudoku: 'title\00030004\4b4e3945\data\banner.sav'). The feature does probably work only for DSiware titles (unless there are any DSi carts with SD/MMC access enabled; or unless there is a feature for storing similar data in cartridge memory). |
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