Question: A value is stored in R5 before this program runs. After the following program is executed, the value stored in memory cell x330B is 4.

A value is stored in R5 before this program runs. After the following program is executed, the value stored in memory cell x330B is 4. The last instruction is a TRAP instruction which halts execution.

Which of the following possible initial values for R5 will produce this result?

Check all that apply; all will be marked wrong if any are wrong.

1110 1110 1110 1110

1011 1011 1001 1011

1011 1011 1010 1001

1111 1111 0000 1111

0010 1000 1100 0111

1111 0011 1000 0011

1111 1111 1101 1001

1010 1010 0101 0101

1111 0000 0000 0000

1111 1111 1110 0100

1111 1111 1111 1111

1110 1110 1101 0001

1111 0000 1000 0001

0000 1111 0000 0001

unanswered

address 4 bits 12 bits
15 14 13 12
11 10 9 8 7 6 5 4 3 2 1 0 
x32FF
 0 1 0 1
 0 0 0 0 0 0 1 0 0 0 0 0
x3300
 0 1 0 1
 1 1 1 1 1 1 1 0 0 0 0 0
x3301
 0 0 0 1
 1 1 0 1 1 1 1 0 0 0 0 1
x3302
 0 1 0 1
 1 0 0 1 0 1 0 0 0 1 1 0
x3303
 0 0 0 0
 0 1 0 0 0 0 0 0 0 0 0 1
x3304
 0 0 0 1
 0 0 0 0 0 0 1 0 0 0 0 1
x3305
 0 0 0 1
 1 1 0 1 1 0 0 0 0 1 1 0
x3306
 0 0 0 1
 1 1 1 1 1 1 1 0 0 0 0 1
x3307
 0 0 0 1
 0 0 1 1 1 1 1 1 1 0 0 0
x3308
 0 0 0 0
 1 0 0 1 1 1 1 1 1 0 0 1
x3309
 0 0 1 1
 0 0 0 0 0 0 0 0 0 0 0 1
x330A
 1 1 1 1
 0 0 0 0 0 0 1 0 0 1 0 1

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