Question 4 a) Show the output waveform of an XOR gate with the inputs A, B, and C indicated in the figure below. A B AP 5 b) A cache has been designed such that it has 512 lines, with each line or block containing 8 words. Identify the line number, tag, and word position for the 20-bit address 3A45616 using the direct mapping method. EY 8 c) The table below represents 10 lines from a 256 line cache that uses direct mapping with a block size of 4 words. Identify the address of the shaded data (AC 16). Tag Line# 0 1 2 3 4 110101 010101 000111 001100 110011 Word 00 12 54 29 33 9A Word 01 Word 10 34 56 32 6A 8C ED A2 20 BC D8 Word 11 78 D3 F3 C8 FO CR7