Well I dumped ALESTE for the MSX today and started looking threw the files.
The banner.bin has decided to be an oddball as the logo doesn't appear on the bottom half upside down in the channel.
Also it doesn't display correctly if the files are extracted and packaged. That problem should be able to get fixed once the brlty tool gets an update.
The good news is, the MSX Channel is set up in the same way as a Mega Drive/Master System Channel so the 05.app data uses the .ccf compression.
The save banner is set up the same way so there are 6 icon save images and 1 banner save image stored in the 'misc.ccf.zlib' file. However, the images are displayed using Nintendo's set up:
01.wte = 100% VC-Pic
02.wte = 100% VC-Pic
03.wte = 75% VC-Pic, 25% MSX
04.wte = 25% VC-Pic, 75% MSX
05.wte = 100% MSX
06.wte = 100% MSX
banner.cfg = Contains the Save Name
banner.wte = Save Banner
The config file has a few more settings than the Mega Drive/Master System:
country="jp"
romfile="Aleste_D4.ccf"
player.0.bindings_override="(core b=A)(classic x=A,y=C)(gamecube y=A,b=C)"
player.0.mapping_keyboard="A=SPCE,S=FK09,X=AD05,Z=ESC"
machine_msx.enable_opll="1"
config_menu.disable_staff-credit="1"
config_menu.disable_ds-controller="1"
The interesting thing is, it might be possible to modify the control settings for the Keyboard. The last three options I think have to do with the Option that comes up if you press the '-' button on the WiiMote and you get two options, one to use enhanced music and the other to swap around the two button actions.
Now the important part, the location of the rom. Well it's stored in a file called 'Aleste_D4.ccf.zlib' along with four other files:
aleste_D4.meg (This is the rom the Wii Emulator loads)
arch
fmpac.rom
init
msx_aleste_D4.rom (not sure what this is for)
Haven't got round to trying a custom rom let. I also think this Emulator only runs MSX1 roms but it might be set up to run the other types.
There is also a small bug in the ccftool2.0 tool. It doesn't seem to extract the 'patch' file stored in the 'data.ccf' file correctly in the 'ALESTE MSX' and 'Puyo Puyo MEGA DRIVE' wads (both which I dumped myself).
As the image shows, it extracts the file, but there is no data inside the file.