Computer Systems: A Programmer's Perspective (3rd Edition)
Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 6.4, Problem 6.16PP

Explanation of Solution

Deriving addresses that will hit the set:

The address format (1 bit per box) for address is given as:

1211109876543210
CTCTCTCTCTCTCTCTCICICICOCO

One can derive the addresses that will hit the set in the following ways:

One needs to consider the following set associative (S, E, B, m) = (8, 4, 4, 13). The derived value will be as follows:

The Index (CI):

s=log2(S)   =log2(23) = 3 log2(2) = 3

The block off set (CO):

s=log2(B)   =log2(22) = 2 log2

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subject : computer architectures and organization (computer science)
(c) The following Sigma 16 program has been loaded into memory at address 0000: load R3,y[RO] load R4,x[RO] lea R5, 2[RO] sub R1,R4,R3 mul R2,R1,R5 store R2,w[RO] trap RO,RO,RO x data 10 y data 12 w data 0 Show the content of the memory writing hexadecimal representation and using a table with 3 columns: the memory address, the contents of that memory address, and an explanation of what "the content (of that memory address) means". As a reference, here are the opcodes for RRR instructions: add 0, sub 1, mul 2, trap c. And here the opcodes for RX instructions: lea 0, load 1, store 2. [7]
9. (10pt) For MESI snooping protocol, specify cache states in processors P1, P2, and P3 for each step. Assumes initial cache state is invalid.
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