Computer Architecture 5.H Five computers use register windows according to the c

Question

Computer Architecture 5.H

Five computers use register windows according to the characteristics shown below: a- Determine the window size and the total number of registers in each computer. b- If the computer with the largest number of registers does not need to access the memory. while the others will access the memory a number of times equivalent to the difference between them and the largest number of registers. Rank the computers from fastest to slowest( 5 = slowest. 1 = fastest). Memory access is 25 times slower than register access.

Explanation / Answer

Number of registers of each window =l+g+2c
Number of registers in processor are (l+c)w+g

For Computer A:

Window Size = 9 + 9 + 2*5 = 28

Total Registers = (9+5)7 + 9 = 107

For Computer B:

Window Size = 7 + 7 + 2*7 = 28

Total Registers = (7+7)3 + 7 = 49

For Computer C:

Window Size = 11 + 13 + 2*9 = 42

Total Registers = (13+9)17 + 11 = 385

For Computer D:

Window Size = 13 + 13 + 2*13 = 52

Total Registers = (13+13)13 + 13 = 351

For Computer E:

Window Size = 19 + 11 + 2*7 = 44

Total Registers = (11+7)5 + 19 = 99

Hence computer C will be the fastest since maximum number of registers are available with the same

C > D > A > E > B

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