EF2000 Mystery File

[Krishty]

We have another source code candidate.

The file with hash 6955A212 in Super EF2000’s did.dat has a size of 2,079,371 bytes. There seems to be some kind of header but no obvious file structure. Then follows almost 2,000,000 bytes which are extremely high-entropy, i.e. either compressed or encrypted. Or it could just be sound data 🤷

I attached that file for reference. Anything known about it?

[Krishty]

The file has some wave-like structure. It could be a lookup table for sin/cos/log/exp or some other hard-to-compute function.

image.png (191.59 KiB) Viewed 222 times

[mikew]

I've just spent an hour looking at this, before noticing that the regular section at the start was about 0x300 bytes long, and the first 2 bytes are 00 01 and realization suddenly dawned...

I'm sorry to say it's this animation, which is called 'spir.256' elsewhere, although maybe not the same file.

intel.PNG (274.01 KiB) Viewed 218 times

I'm really happy the last PC I bought was AMD.

[Krishty]

Fantastic work 💪 I will sleep well tonight; no source code “what if” 😂