Biju Patnaik University of Technology 2007-5th Sem B.Tech Computer Science and Engineering MICROPROCESSOR AND MICROCONTROLLER CLASS TEST-1 - Question Paper

MICROPROCESSOR AND MICROCONTROLLER 5TH SEM CLASS TEST-1 MAX. MARKS-10
ans all ques.. All ques. carry equal marks.

1.Which signal is introduced to demultiplex the AD bus?
2.Show the flag status for the program provided beneath
MVI A,05H
MVI H,06H
ADD H
HLT
3.Explain SHLD and SPHL instruction.
4.Calculate the time needed for the execution of the instruction LDA 4500H.
5.Write a program in 8085 to enable RST 7.5 and to disable RST 6.5 and RST 5.5.

Earning:   Approval pending.