1. If the machine in Appendix C executes an instruction every microsecond (a millionth of a second), how long does it take to complete the program in Problem 18?

2. Suppose the memory cells at addresses 20 through 28 in the machine described in Appendix C contain the following bit patterns:

AddressContents201221202232233024802521202027CO2800

Assume that the machine starts with its program counter containing 20.

a. What bit patterns will be in registers 0, 1, and 2 when the machine halts?

b. What bit pattern will be in the memory cell at address 30 when the machine halts?

 

c. What bit pattern will be in the memory cell at address BO when the machine halts?