Solution 1 CmpE102 Spring 2017 Programming Assignment 6 Due Date 19 April Goal Linear feedback shift register Instructions Step 1 Step 2 The application
Solution CmpE Spring Programming Assignment Due Date April Goal Linear feedback shift register Instructions
Solution CmpE Spring Programming Assignment Due Date April Goal Linear
Programming Assignment Due Date April Goal Linear feedback shift register Instructions Step Step The application
Solution CmpE Spring Programming Assignment Due Date April Goal
Linear feedback shift register Instructions Step Step The application
Solution CmpE Spring Programming Assignment Due Date
Solution CmpE Spring
(Solution) 1 CmpE102 Spring 2017 Programming Assignment 6 Due Date: 19 April Goal: Linear feedback shift register Instructions: Step 1. Step 2. The application...

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It would need to be an 8bit LFSR. Assembly code is compiled with nasm i386Pg. 1 CmpE102 Spring 2017 Programming Assignment 6 Due Date: 19 April Goal: Linear feedback shift register Instructions: Step 1. Creating the assembly language file Everything should be done the same way as the previous assignment. Step 2. The application area The wikipedia article is a bit math-heavy, but gives a good description of the many application areas. https://en.wikipedia.org/wiki/Linear-feedback_shift_register Here is a more hardware-oriented description. http://www.eetimes.com/document.asp?doc_id=1274550 Here is a summary explanation that does not involve a hardware description. You are familiar with the shift left and shift right instructions. These move all the bits in the register to the left or right respectively by a specified number of bit positions. Let's suppose that we shift by one position. Then a new bit value will enter at the least or most significant end of the register respectively. The value of the new bit would be zero if shifting to the left. Shifting to the right, the new bit is a zero for a logical shift, and a duplicate of the sign bit for an arithmetic shift. A linear feedback shift register (LFSR) is a shift register whose input bit is a linear function of its previous state. The only linear function of single bits is XOR, thus it is a shift register whose input bit is driven by the exclusive-or (XOR) of some bits of the overall shift register value. In a LFSR, the new bit is neither of those, but some arbitrary function of the existing bits in a register. Depending on the function, as the shifts repeat, the successive values in the register will go through a repeating sequence. It can be shown that the maximum length of the sequence for an n -bit register is 2 n -1 if you chose the best function. Other functions may give shorter sequences. CmpE102 Spring 2017 Programming Assignment 6

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