CS609 VU Midterm Current Paper (May 2011)

System Programming

Cs609

Current Mid term paper

 

 

1. coprocessor Control word usage in testing of coprocessor

    

2.   write the function of this code

 

(char hi, char lo)

hi= hi – 0x30;

lo = lo – 0x30;

hi= hi | lo;

return hi;

 

3. How we can access the battery powered RAM? Write steps?
4. Why we use buffering in UART FIFO queue?
5. In line control register what is the working of bit # 7?
6. What is serial communication? Explain it.
7. In flow control what is the working of D4?
8. How can we enable the 0x0f to perform interrupt driven I/O? Write a program.
9. In 13/3H service what is the value of AX and BX?