Exam 1 INEL 4215 Fall 2004

October 11, 2004

Name___________________________________________

ID______________________________________________

Section 101

Prof. Nayda G. Santiago

Instructions:

• Time duration: 50 minutes.

• Total points: 100 points

• Total number of problems: 3
  Problem 1: 50 points
  Problem 2: 25 points
  Problem 3: 25points
  
  
• This exam contains 6 pages, including this page. One is an extra sheet in case you need it.

Rules:

• Students are not allowed to leave the classroom during the exam.

• Nayda Santiago reserves the right to check the calculators of students.

• Nayda Santiago reserves the right to remove an exam from a student found cheating during the exam.

• If a student solves the problem with multiple solutions, only the first one will be graded.

• If a student only gives an answer and no procedure is shown, and if the result is wrong, the problem gets a zero in the evaluation.

• No caps or sunglasses are allowed during the exam.

• Cellular phones and pagers should be in OFF during exams.

Nayda G. Santiago Fall 2004

Question 1 (50 points)

Design the Instruction Set Architecture (ISA) of a new 8-bit computer. Provide the register’s description, instruction register characteristics, memory description, data bus description, instruction set and instructions format. Give a general description of the system. The data bus must be 8 bits wide. You may choose any type of architecture you want.

Description of registers (20 points)

Instruction set (20 points)

Instruction format (5 points)

Description of memory (5 points)

Continuation problem 1.

Question 2 (25 points)

“Bit patterns have no inherent meaning. They may represent signed integers, unsigned integers, instructions, etc.” [Hennesy & Patterson 98]. Given the bit pattern:

1000 1010

what does it represent in decimal, assuming that it is

a) A two’s complement signed integer?

b) An unsigned integer?

Question 3 (25 points)

a) Describe the differences between assembly language and high-level languages (10 points)

b) Describe the tools used by the assembly language programmer (15 points).

Extra PAGE (In case you need it)