On 09/16/2016 09:58 AM, Gene Heskett wrote: > On Friday 16 September 2016 08:58:53 andy pugh wrote: > >> On 16 September 2016 at 13:46, Gene Heskett <ghesk...@shentel.net> > wrote: >>> Ok, what I need is a true output for any input condition of i0 and >>> i1 except i1 true and i0 false. function 0x2, the only answer that >>> lut5.py gives you, doesn't do that. >> That's function FFFFFFFB actually. >> >> https://docs.google.com/spreadsheets/d/1_VlL39jUOPpS8Tt9mpRK-eaSTS6C6P >> HBDoE3JitvLzs/edit#gid=0 > bookmarked. But where does it display the answer? I did try the 0xB but > that didn't work. Machine on button was locked out IIRC. Where does the > 7 F's in front of it that you show, come from? A LUT5 has 5 inputs, all combinations define 32 possible states of those inputs. So, you have to define the output behavior for all of those possible states. In hex, 32 bits takes 8 symbols. F (hex) = 1111 (binary). The exact ordering of which bit refers to which input combination is in the manual.
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