CS401 Mid term Subjective 2011

What is the syntax of PUSH instruction? 2 Marks

For what purpose DS and ES registers are generally used in the context of video memory. 2 Marks


When the instructions “push ax” is executed in decrementing stack how the value of SP will change. 3 Marks


What colors are repeated by 0th, 1st and 2nd bits (from least significant side) in Attribute Byte? 3 Marks


How SCAS instructions can be used to detect Null at the end of a string?5 Marks


What is the wrong with this program? 5 Marks

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