Spring2005Finalb_sol

# Spring2005Finalb_sol - ECE 2030 Spring 2005 Final Exam...

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ECE 2030 Spring 2005 Final Exam Solutions Dr. Heck Answer Sheet: Problem 1 Part A) ____F______ Part B) ____F_____ Problem 6 Part C) ___F_______ _ A CC D + _________ Part D) ___T______ Part E) ____T_____ Problem 7 Part F) ____F_____ Part A) _2 to 4 decoder Problem 2 Part B) _4 to 1 mux Part A) _ A B + ____ Part C) Static random access memory cell Part B) __ A ________ Problem 3 Part A) __2________ Part B) __2 25 ________ Part C) __16________ Problem 4 Part A) _____11100_ error?_No_____ Part B) _____10100__ error? No_____ Problem 5 Part A) __39______

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Problem 8 (21 Points): Write the corresponding microcode for the steps outlined in each part. Part A) 1) R1 = 0xA 2) R3 = M[R2] 3) R4 = R1 + R3 4) M[R2] = R4 Step cX cY cZ RWE imm. en. imm val. au. en. s / a lu. en. l.f. st. en. s.t. store en. load en. w / r mem. sel. 1 0 1 1 1 0xA 1 0 0 0 0 0 0 2 2 3 1 0 0 0 0 0 1 1 1 3 1 3 4 1 0 1 0 0 0 0 0 0 4 2 4 0 0 0 0 0 1 0 0 1 Part B) 1) R1 = R2 AND 0xFFFF
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Spring2005Finalb_sol - ECE 2030 Spring 2005 Final Exam...

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