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Instructions:
Please read the following instructions carefully before submitting assignment:
It should be clear that your assignment will not get any credit if:

 The assignment is submitted after due date.
 The assignment is submitted by email.
 The submitted assignment does not open or file is corrupt.
 All types of plagiarism are strictly prohibited.
 It is in some format other than .doc (Microsoft Word).

Objectives:
 To learn and understand the basic concepts of I/O bus in CPU.

For any query about the assignment, contact at cs501@vu.edu.pk

Question 1 Marks 10
Problem Statement:
Consider a 16-bit parallel output port attached with the FALCON-A CPU as shown in the figure below:

This port has been mapped onto address DEh of the FALCON-A’s I/O space. To display the data being received from the FALCON-A’s data bus, sixteen (16) LED branches are used. Every LED branch is wired in such a way that when a 1 appears on the particular data bus bit, it turns the LED on; a 0 turns it off.

Question: Which LEDs will be ON when the below given OUT instruction executes on the CPU? Explain in detail.

OUT R2, DEh

Assume that the value of R2 is 1556h.

Question 2 Marks 5

Consider an I/O bus requires 15 nsec for bus requests, 20 nsec for arbitration and the average time to complete an operation is 12 nsec after the access to the bus has been granted, is it possible for such a bus to perform 40 million IOPS?

Note: No assignment will be accepted after due date.

Spring%202015_CS501_3.doc


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AoA! Come on Guys, Share your valuable ideas, Please 

Please Discuss here about this assignment.Thanks
Our main purpose here discussion not just Solution
We are here with you hands in hands to facilitate your learning and do not appreciate the idea of copying or replicating solutions.

Q1 Solution

for help and idea look at

Chapter No.24 and page No.270 & 271 in handouts

Q2 Solution

for help and idea look at

Chapter No.23 and Page No.264

WELL done bro

AoA! Koi bhai/Behn LED ON Kravoooo ....

Salam all bro/sisters and Eid Mubarik to all of you...

please give an idea solution about the assignment....

0001    0101     0101    0110

So, the LEDs No.1, 2, 4, 6, 8, 10, 12 will be on

Enjoy.....D

how you have obtained these 0001 0101 0101 0110 do you can explain ?

q # 2 main 10 power -9 or 6 ye kia hay ?

1556h key ye value nahi banti jab hum convert karty hi

haadi shb explain b krdya kren . only solution se

concern nai hota thnkx

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