Electrical Engineering Answers

Explain the Memory stack organization of 16 locations of stack( 0 to 15). take the initial value of the

stack pointer is SP = 0E in Hex. Explain the following push and pop instructions through the Memory

stack organization diagram.

(1) PUSH R5 WHERE R5 = XX in Hex

(2) POP R4 WHERE R4 = (XX + 3 ) Hex for example roll no 64 is having the data in R5 = 64

Hex and R4 is ( 64+3 = 67 Hex) [5 marks]

Design a circuit of General register organization in which 4 registers are there from R0 to R3.

(a) Perform the following microoperation and explain the operation in the steps through the

diagram properly: - AND R3 ,R3 ,R1 .

(b) Explain the control word as per the register configuration given above. [10 marks]

he unique addresses assigned to the four registers (R11,R12,13,R14) of the I/O interface are equal

to the XX3 , XX7 , XXB and XXF in Hex . Where XX is hex digits equal to your roll no . (if student is having

roll no 45 than address are 453 ,457 ,45B , 45F in Hex ) .Show the well labeled external circuit that must

be connected between and 12-bit I/O address from the CPU and the CS, RSI, and RS0 Inputs of the

Interface.

Find the values of the flags (carry ,sign ,zero, overflow) of the processor status register for the given

example of two 8 bit no’s in Hex (A7 + EF) and draw the circuit diagram also.

Design a circuit of the General register organization in which 16 registers are there from R0 to R15.

(a) Perform the following microoperation and explain the operation in the steps through the diagram properly: - ADD R13, R7, R10.

(b) Explain the control word as per the register configuration given above.

Design the architecture of DMA mode of operation and illustrate how various components

namely, CPU, RAM, DMA Controller and I/O Peripheral interface each other.

Explain addressing modes in detail with example of each.

Explain the modes of transfer on input-output organization.

Enlist major differences that exist between central computer and the peripheral devices.

What role does an interface play in resolving these differences?

Review Conceptual Example 2 before attempting this problem. The moon has a diameter of 3.48 x 106 m and is a distance of 3.85 x 108 m from the earth. The sun has a diameter of 1.39 x 109 m and is 1.50 x 1011 m from the earth. Determine (in radians) the angles subtended by (a) the moon and (b) the sun, as measured by a person standing on the earth. (c) Determine the ratio of the apparent circular area of the moon to the apparent circular area of the sun. These calculations determine whether a total eclipse of the sun is really “total.”