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Computer Architecture and Assembly Language Programming (CS401)

Assignment # 03

 

Total marks = 20                                       Deadline Date

20th of July,

2017

 

Please carefully read the following instructions before attempting assignment.

 

RULES FOR MARKING

It should be clear that your assignment would not get any credit if:

  • The assignment is submitted after the due date.
  • The submitted assignment does not open or file is corrupt.
  • Strict action will be taken if submitted solution is copied from any other student or from the internet.

 

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

 

You are supposed to submit your assignment in .doc or docx format.

Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

 

Topic Covered:

·         BIOS and DOS interrupts

·         Hardware Interrupts

·         Ports

NOTE

 

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

 

If you people find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

 

For any query, feel free to email at:

cs401@vu.edu.pk

 

 

Questions No 01                                                    20 marks

 

Suppose, you are interfacing an old monochrome dot matrix printer (receipt printer) with your computer’s parallel port. The stated dot matrix printer will print receipts character wise, so the system will transmit each character parallelly.

 

The printer will be operated as under:

 

1. First, you should select the printer by setting “select printer” pin on your parallel port.

2. Initialize printer by sending initialize signal.

3. Read “acknowledge” pin.

4. Transmit ASCII character data to the data port of the parallel port.

5. Clear initialize signal.

6. Deselect printer.

 

You should write a subroutine to print

 

“Welcome to Virtual University of Pakistan”

 

Your subroutine will get each character as an input from keyboard using interrupt mechanism and transmit it to the printer port according to the stated working mechanism.

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discuess friends: if you have any idea about this assignment

plz plz tell me solution

any one???

koi to jwab btao es ka??

kaun ha
sol wala,,,,plz tell

Asslam-u-Alaikum,

itna time agar 5 chapters study kernay per lagatay too abhi tak solution pora hoo jata.

Regards,

Omer

i am trying but could not able to grasp :'(

o bhai 5 kia ma ne sare lectures attend kiye hain but chain of cammand nai ha agar ap k pass is ka solution ha to bata do otherwise logoo ko takleef mein dakh kar mazze karoo

hahahahahahahaha,

i'm with you still studying.... agar mil gaya too yehan paste ker don gaa solution..... still have time till tomorrow.... till last moment check ker lena....

Regards,

Dear Students Don’t wait for solution post your problems here and discuss ... after discussion a perfect solution will come in a result. So, Start it now, replies here give your comments according to your knowledge and understandings....

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