ee357_hw2_sol

ee357_hw2_sol - EE 357 Homework 2 Spring 07 Redekopp Name:...

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Spring ’07 Redekopp Name: ___________________________________________ Lec: 9:30 / 11:00 / 2:00 Due: Wed./Thurs. Jan. 24 th /25 th Score: ________ Note: Attach all work to receive full credit Processor/Memory Operations 1.) Given the address bus widths of the following processors, state the maximum bytes of main memory that can be interfaced to the processor. Processor Address Bus Width Maximum Amount of Mem. Intel Pentium 4 36 2 36 Bytes = 64GB Intel 80486 32 2 32 Bytes = 4GB Intel 8086 20 2 20 Bytes = 1MB 2.) Consider the following read and write operations specified in RTL. All necessary initial values are given. Classify each operation as a memory read or write. Then show the hex contents of both D0 and the entire longword contents of address $0F00 after the operation is executed. Operation Initial Contents R/W? Contents after operation a.) ($0F00.B) D0 (D0) = $01234567 R (D0)= $012345FE ($0F00) = $FEDCBA98 ($0F00.L)= $FEDCBA98 b.) (D0.W) $0F02 (D0) = $01234567 W (D0)= $01234567 ($0F00) = $FEDCBA98 ($0F00.L)= $FEDC4567 c.) (D0.B) $0F00 (D0) = $01234567 W (D0)= $01234567 ($0F00) = $FEDCBA98 ($0F00.L)= $67DCBA98 d.) ($0F00.W) D0 (D0) = $01234567 R (D0)= $0123FEDC ($0F00) = $FEDCBA98 ($0F00.L)= $FEDCBA98 e.) ($0F01.B) D0 (D0) = $01234567 R (D0)= $012345DC ($0F00) = $FEDCBA98 ($0F00.L)= $FEDCBA98 f.) (D0.W)
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ee357_hw2_sol - EE 357 Homework 2 Spring 07 Redekopp Name:...

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