JESTION 1 Given that the PC contains 511, the address of the first instruction, and the partial list of opcodes as shown in Figure 1: | Address Content Instruction Meaning Load AC from memory Store AC to memory Add to AC from memory Subtract memory from AC 511 1824 0001 512 5822 0010 513 2823 0101 0110 822 21AB Figure 1. Partial List Opcodes 823 FFDE 824 AB12 Original memory contents i. Illustrate the execution of the instructions from memory content 512 and 513 in the diagram (511, 512 and 513). ii. Show the contents of the registers (Program Counter – PC, Accumulator – AC, and Instruction Register – IR).

Computer Networking: A Top-Down Approach (7th Edition)
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Chapter1: Computer Networks And The Internet
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QUESTION 1
a) Given that the PC contains 511, the address of the first instruction, and the partial list
of opcodes as shown in Figure 1:
Address Content
Instruction Meaning
511
1824
0001
Load AC from memory
512
5822
0010
Store AC to memory
Add to AC from memory
Subtract memory from AC
513
2823
0101
0110
...
822
21AB
Figure 1. Partial List Opcodes
823
FFDE
824
AB12
Original memory contents
i. Illustrate the execution of the instructions from memory content 512 and 513 in the
diagram (511, 512 and 513).
ii. Show the contents of the registers (Program Counter – PC, Accumulator – AC,
-
and Instruction Register – IR).
Transcribed Image Text:QUESTION 1 a) Given that the PC contains 511, the address of the first instruction, and the partial list of opcodes as shown in Figure 1: Address Content Instruction Meaning 511 1824 0001 Load AC from memory 512 5822 0010 Store AC to memory Add to AC from memory Subtract memory from AC 513 2823 0101 0110 ... 822 21AB Figure 1. Partial List Opcodes 823 FFDE 824 AB12 Original memory contents i. Illustrate the execution of the instructions from memory content 512 and 513 in the diagram (511, 512 and 513). ii. Show the contents of the registers (Program Counter – PC, Accumulator – AC, - and Instruction Register – IR).
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