When a $$''CALL$$ $$addr'$$ instruction is executed, the $$CPU$$ carries out the following sequential operations internally.

Note:
$$(R)$$ means content of register $$R$$
$$\left( {\left( R \right)} \right)$$ means content of memory locating pointed by $$R$$
$$PC$$ means Program Counter
$$SP$$ means Stack Pointer

In $$8085$$ microprocessor, the contents of the Accumulator, after the following instructions are executed will become

$$\eqalign{ & XRA\,\,\,A \cr & MVI\,\,\,B\,\,\,F0\,\,\,H \cr & SUB\,\,\,B \cr} $$

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

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