Disc Layout

NOTE: where I've said z=zlib, it might refer to z=zapit (the company)...

• Data/
  • game.zbc
    • zlib compressed byte code
  • app_sdram_(3/a).cat.bin
• Fonts/
  • [str].dat
  • [str].zbm
    • zlib compressed bit map (fonts, probably)
• IFrames/
  • MPEG sequences for loading(?)
• Images/
  • zlib compressed bit map (images, probably)
• Movies/
  • MPEG sequences
• Sounds/
  • zlib compressed waveform (wav, probably)
• gamewave.diz
  • provides loader information of some kind

(this is from VeggieTales but should be generic enough)

To expand on my confusion about whether the "z"s are, there is typically zlib as a compression mechanism but there isn't an obvious file header (which is sensible considering they were dealing with their own format I'd assume).

gamewave.diz

(from Lock 5)

[global]
appname=wilds
appfile=/Data/game.zbc
version=1.01.5bailr

[platform]
board=3
engine=/Data/app_sdram_3.cat.bin
version=0.11.3.65nhfs

Paths should be able to contain spaces

We're currently assuming app_sdram_[board].cat.bin gets loaded first, and then provides the in-memory loader for lua.

files known from known discs

• gamewave.diz - basic game info, which engine and bytecode file to use
• app_sdram_*.cat.bin
• .zbc - Lua 5.0 bytecode
• .zwf - ZAPiT wavefile
• .zbm - ZAPiT bitmap
• .mpg, .m2v - movies
• .dat - font files

Letter Zap! additionally have: dic38.zdt, lfreq.dat, tag.mtx for dictionary data And also some Windows files, including .dll, .sys, .tmp, and Thumbs.db; as well as two .rar files (Sudoku maps and iframes in 4 Degrees vol 1 So far we know enough to unpack .zwf and .zbm, we don't have any info about .dat font files, video formats are well known