Chapter 3: Q21E (page 238)
Question: [30] <§3.5> If the bit pattern 0×0C000000 is placed into the Instruction Register, what MIPS instruction will be executed?
The MIPS instruction “jal” will be executed.
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Question: What do you get if you addto itself 4 times? What is ? Are they the same? What should they be?
Question: Based on your answer to 3.38 and 3.39, is
As discussed in the text, one possible performance enhancement is to do a shift and add instead of actual multiplication. Since , for example, can be written , we can calculate by shifting 6 to the left 3 times and then adding 6 to that result. Show the best way to calculate using shifts and adds/subtracts. Assume both inputs are 8 bit unsigned integers.
Write down the bit pattern in the fraction of value 1/3 assuming a floating-point format that uses binary numbers in the fraction. Assume there are 24 bits, and you do not need to normalize the value of 1/3. Is this representation exact?
Assume 185 and 122 are signed 8-bit decimal integers stored in sign-magnitude format. Calculate 185 - 122. Is there overflow, underflow, or neither?
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