WARNING SPOILERS DO NOT SCROLL DOWN IF YOU LIKE TO PLAY On Fri 11 May 2012 at 09:58:58 +0200, Rhialto wrote: > For the moment I have pasted my lists into pastebin: > > http://pastebin.com/c2JNM5DA > http://pastebin.com/mBjqdb8k Thanks, those clarified things :-) [skipping some 80 lines or so... spoilers ahead...] Still here? Okay. Each bit in the output is constructed independently. [skipping some 80 lines or so... more spoilers ahead...] Every bit is constructed via some ring counter. Not exactly LFSR, but close. [skipping some 80 lines or so... final spoilers ahead...] You should include the first $d6 value in the table as well, it make it more regular. With that done, if you look at only at one, it stays the same for N cycles, then flips, and the other level for N cycles. For some of the inputs it does never flip, stays constant all the time. For bit K in the output, only bit K in the input matters. The half periods for the bits are, highest bit to lowest: 2 5 3 1 8 7 3 6. [okay then, final final spoilers ahead] The circuit for each bit is a shift register with feedback, and the value you input is also put into that feedback. To find out the exact feedback formulas, you'll have to put some non-constant patterns into the chip. This is almost a set of LFSRs by the way; except the feedback is not linear. But similar analysis techniques apply. Segher Message was sent through the cbm-hackers mailing listReceived on 2012-05-11 18:00:30
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