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61974: Code sheet - bytes used to randomize code sheet co-ordinates choice
Used in routine at 61982 to pick a random value for the co-ordinates of the security code on the code sheet that needs to be entered.
The first 4 values are randomized, the next 4 are fixed (and used to further randomize the initial values)
61974 DEFB 107,133 System variable FRAMES cycle timer (2 bytes of it) stored here at start of code routine at 62089
61976 DEFB 185 The (first) 2 bytes of the FRAMES timer are used as a random address to pick a byte from.
The byte is stored here, in the routine at 62089.
61977 DEFB 139 The byte at 61976 is copied here as well in the same routine.
This will be the random value that the co-ordinates are generated from.
61978 DEFB 118,181,83,176 4 byte values that are used to XOR and pixel-shift with the previous four, to create random numbers
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