ah ok, I must be confusing it with something else then
given that both 'raw' dumps end with a sequence of 00 and ffs and share a similar structure then I'm inclined to think it's probably not the most complex of decodes probably just the 'top' and 'bottom' interleaved with maybe a bitswap
I don't think you'd get 00 / ff grouping if it was much more complex / there was something going on with the addresses too.