3. Suppose the memory cells at addresses A4 to B1 in the machine described in Appendix C contain the (hexadecimal) bit patterns given in the following table: Address Contents A4 20 A5 00 A6 21 A7 03 A8 22 A9 01 AA B1 АВ B0 АС 50 AD 02 AE B0 AF AA B0 CO B1 00 When answering the following questions, assume that the machine is started with its program counter containing A4. a. What is in register 0 the first time the instruction at address AA is executed? b. What is in register 0 the second time the instruction at address AA is executed? C. How many times is the instruction at address AA executed before the machine halts?
3. Suppose the memory cells at addresses A4 to B1 in the machine described in Appendix C contain the (hexadecimal) bit patterns given in the following table: Address Contents A4 20 A5 00 A6 21 A7 03 A8 22 A9 01 AA B1 АВ B0 АС 50 AD 02 AE B0 AF AA B0 CO B1 00 When answering the following questions, assume that the machine is started with its program counter containing A4. a. What is in register 0 the first time the instruction at address AA is executed? b. What is in register 0 the second time the instruction at address AA is executed? C. How many times is the instruction at address AA executed before the machine halts?
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w5

Transcribed Image Text:3. Suppose the memory cells at addresses A4 to B1 in the machine
described in Appendix C contain the (hexadecimal) bit patterns given in
the following table:
Address
Contents
A4
20
A5
00
A6
21
A7
03
A8
22
A9
01
AA
B1
АВ
B0
AC
50
AD
02
AE
B0
AF
AA
B0
CO
B1
00
When answering the following questions, assume that the machine is
started with its program counter containing A4.
a. What is in register 0 the first time the instruction at address AA
is executed?
b. What is in register 0 the second time the instruction at address AA
is executed?
C. How many times is the instruction at address AA executed before the
machine halts?
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