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Quiz1F05Sol - EE319K Fall 2005 Quiz 1A Jonathan W Valvano...

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EE319K Fall 2005 Quiz 1A Solution Jonathan W. Valvano September 30, 2005 10:00am-10:50am Jonathan W. Valvano This is a closed book exam. You must put your answers on this piece of paper only. You have 50 minutes, so allocate your time accordingly. Please read the entire quiz before starting. (5) Question 1. Give the decimal value….… $C3 = -128+64+2+1 = -61 (5) Part 2a. Specify 0 or 1 ….….….…. 100 - 210 = -110 ( doesn’t fit) C=1 (5) Part 2b. Specify 0 or 1 ….….….…. 100 - -46 = +146 (doesn’t fit) V=1 (5) Question 3. Specify A-H ….……..…. C) 16-bit signed fixed-point number with resolution of 0.01 (5) Question 4. Give the range…. Precision is 4000 alternatives (0 to 3999) R max is 399.9 (5) Question 5. Show the machine code…. $6E5B (5) Question 6. Give example inputs, specify “none” if none exist. None , 255*255<65535 (5) Question 7. Give example inputs, specify “none” if none exist. Divide by 0 causes overflow (5) Part 8a. What value is pushed?….….…. Return address is pushed 16-bit $5005 (10) Part 8b. Simplified memory cycles (you may or may not need all 5 entries) R/W Addr Data Changes R $5008 $5E IR=$5E, PC=$5009 R $5009 $02 EAR=$0002, PC=$500A W $0002 $12
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