Final Examination Fall 2020

PwnHero Final Examination COE-538 - Microprocessor Systems December 9, 2020 Student Name: ___________________________________________ Student ID: ______________________ Time limit: 3 hours Notes: 1. Open notes. No questions during the exam. State any assumptions. 2. Answer neatly all questions. Show how you derived the answers. Unclear answers will not be accepted. I. General Questions A) Multiple Choice Questions (encircle the correct answer): 1. Where does the 9S12 processor start to execute the program when power is turned on? [1 mark] a) The program starting address is fetched form the stack pointer b) The program starting address is fetched from a fixed memory location c) The program starting address is fetched form an interrupt service routine 2. How many bytes are reserved by the following Assembler directive: dc.b $16 ? [1 mark] a) 1 Byte b) 16 Bytes c) 32 Bytes 3. After execution of the instruction: movb #$FC, $1020 the Negative Bit (N) in the CCR register will be: [1 mark] a) set b) cleared c) not affected 4. Which of the following interfaces allows the 9S12 to communicate asynchronously with peripheral devices: [1 mark] a) SCI b) SPI c) IIC PwnHero.com