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hw22_SLN - ECE 211 HW Set 22 Solutions p 1/5...

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ECE 211 HW Set 22 Solutions p 1/5 //home/vdimitrov/25082/bde0a622f55cabb0905f3e30aa12ce9c1e8f8f00.doc HW Set 22 – Revised SOLUTIONS 1. Use Spartan XC2S50 logic slices to realize the one logic expression N = (a3 b3 c3 d3 ) + (a2 b2 c2 d2 ) + (a1 b1 c1 d1 ) + (a0 b0 c0 d0 ) Show the inputs to the slices you use, and specify the F, G functions that you realize in each slice. [ Xilinx's place and route used four slices to realize this expression.] Solution: Slice 1: F = (a3 b3 c3 d3 ) [Route to F1 of Slice 3] G = (a2 b2 c2 d2 ) [Route to F2 of Slice 3] Slice 2: F = (a1 b1 c1 d1 ) [Route to F3 of Slice 3] G = (a0 b0 c0 d0 ) [Route to F4 of Slice 3] Slice 3: F = F1 + F2 + F3 + F4
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ECE 211 HW Set 22 Solutions p 2/5 2. Use Spartan XC2S50 logic slices to realize the one logic expression P = x10 x9 x8 x7 x6 x5 x4 x3 x2 x1 Show the inputs to the slices you use, and specify the F, G functions that you realize in each slice.
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