EE 361 Fall 2004: Homework 11

Due: 11/17/04 (wed)

Turn these in by hand at the beginning of class.

Textbook problems

• Textbook Problem 5.15 [2 pts]
• Textbook Problem 5.16 [2 pts]
• Textbook Problem 5.17 [2 pts]
• Textbook Problem 5.22 [2 pts]  with the following modifications:  Note that the jr instruction is R-type.  This means that its opcode is 0 and to distinguish it from the R-type instructions, the function field must be examined.  Change the datapath by letting the ALU Control have an additional output labeled "PCJr" that becomes an input to the OR circuit, which in turn is connected to the PC.
• Write the truth table for ALU Control.
• Describe any changes to the state diagram in Figure 5.42, page 396.