As it is with obscure Japanese drifting games that I am interested in comes with them no folders whatsoever within the ISO and large genericly-named bin files.. This dr1.bin is the first and the biggest of the lot, and the header formats- or atleast, the lengthy Hex buildup to them- are the same throughout.
putvarchr MEMORY_FILE SIZE 0 log MEMORY_FILE 0 0 math X = 0 for i = 0 < SIZE get B byte MEMORY_FILE2 math B2 = B math B ^= X math X = B2 put B byte MEMORY_FILE next i