1
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
The contents (in Hexadecimal) of some of the memory locations in an $$8085A$$ based system are given below
The contents of stack pointer $$(SP),$$ program counter $$(PC)$$ and $$(HL)$$ are $$270H,$$ $$2100H$$ and $$0000H$$ respectively. When the following sequence of instructions are executed,
$$2100H:$$ $$DAD$$ $$SP$$
$$2101H;$$ $$PCHL$$
The contents of $$(SP)$$ and $$(PC)$$ at the end of execution will be
2
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
The associated figure shows the two types of rotate right instruction $${R_1},\,{R_2}$$ available in a microprocessor where Register is a $$8$$-bit register and $$C$$ is the carry bit. The rotate left instructions $$L1$$ and $$L2$$ are similar except that $$C$$ now links the most significant bit of Register instead of the least significant one.
Such a division can be correctly performed by the following set of operations
3
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
The associated figure shows the two types of rotate right instruction $${R_1},\,{R_2}$$ available in a microprocessor where Register is a $$8$$-bit register and $$C$$ is the carry bit. The rotate left instructions $$L1$$ and $$L2$$ are similar except that $$C$$ now links the most significant bit of Register instead of the least significant one.
Suppose Register contains the $$2's$$ complement number $$11010110.$$ If this number is delivered by $$2$$ the answer should be
4
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
In an $$8085$$ $$A$$ microprocessor based system, it is desired to increment the contents of memory location whose address is available in $$(D,E)$$ register pair and store the result in same location. The sequence of instructions is
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