The way in which operand is specified in the instruction is 
called addressing mode.
e.g.:Immediate,register,Direct,Register Direct,etc.

Immediate Addressing Mode: Here 8 bit or 16 bit data can be 
specified as part of instruction.
e.g. MOV AL,50H
     MOV BX<5000H

immediate addressing mode operand is always the data  
for ex mov ax,60h

RIM FUNCTION: READ INTERRUPT MASK it will check the wheather
interrut is mask or not.

SIM FUNCTION:SET INTERRUPT MASK it Used to mask the 
hardware interrupts

IN i dont know

IN initiate input operation

MOV is used for normal transfer of data...
MVI is used for transfer of an immediate data

1.MOV is used to transfer data between Registers.
2.MVI is used to transfer Direct data to Register.
e.g. MOV R2,R4 and MVI R1, #33H

mvi instruction is espesily used in microprocessor & mov 
insruction is used for microcntroller

mov istruction copies content the source register to
destination register and the mvi can use 8 bit data are
stored in destination or memory.

MOV instruction is used to transfer/copy the data between
registers
ex: MOV A, B

MVI Instruction is used copy the constant data/value to a
register
Ex: MVI R1, $12 (Micro dependent, this for 8086)

Various formats of specifying the operands are called
addressing modes.
1) Direct, (ex: IN/OUT Port#) (# - port number)
2) Immediate, (ex: MVI R,Data) (R-register)
3) Register, (ex: MOV Rd,Rs)  (Rd- destination Register, Rs-
source Register)
4) Register indirect

there are  five addressing mode of 8085

1-dirrect addressing mode

2-register addressing mode
3-register indirrect addressing mode
4-Imediate addressing mode
5- Implicit addressing mode

1.Direct addressing mode
2.Indirect addressing mode
3.Register addressing mode
  a)Direct Register addressing mode
  b)Indirect  Register addressing mode
4.Immediate addressing mode
5.Implied addressing mode

1.direct addressing mode
2.indirect addressing mode
3.immediate addressing mode
4.implicit addressing mode
5.impliedaddressing mode

the software which controls the hardware.

It is the combition of both hardware and software to 
perform the perticular task.

its the combition of both software and hardware

or
 
its means processor on chip

It is an electronic device that incorporate hardware 
controller(MicroProcessor,Microcontroller or DSP) with in 
their implementaion.

enhancing the functionality of system by appying software

Program Counter (PC) and Stack Pointer (SP) are basically
used to hold 16-bit memory addresses.PC stores the 16-bit
memory address of the next instruction to be fetched.SP can
be used to temporarily store the 16-bit memory address as
well as data.So PC & SP are 16-bit registers.

Tri-state devices are those devices those ICs which can 
exhibit a high impedance state with 0 and 1 state. This can 
help in bus oriented devices where ports of many chips will 
have to be used .

flags are used to test data conditions.
For example, after an addition of two numbers, if the sum in
the accumulator id larger
than eight bits, the flip-flop uses to indicate a carry --
called the Carry flag (CY) -- is
set to one. When an arithmetic operation results in zero,
the flip-flop called the
Zero(Z) flag is set to one. The first Figure shows an 8-bit
register, called the flag
register, adjacent to the accumulator. However, it is not
used as a register; five bit
positions out of eight are used to store the outputs of the
five flip-flops. The flags are
stored in the 8-bit register so that the programmer can
examine these flags (data
conditions) by accessing the register through an instruction.
These flags have critical importance in the decision-making
process of the microprocessor.
The conditions (set or reset) of the flags are tested
through the software
instructions. For example, the instruction JC (Jump on
Carry) is implemented to
change the sequence of a program when CY flag is set. The
thorough understanding
of flag is essential in writing assembly language programs.

Flag is an 8-bit register, called the flag register, 
adjacent to the accumulator. However, it is not used as a 
register; five bit positions out of eight are used to store 
the outputs of the five flip-flops. The flags are stored in 
the 8-bit register so that the programmer can examine these 
flags (data conditions) by accessing the register through 
an instruction.These flags have critical importance in the 
decision-making process of the microprocessor. The 
conditions (set or reset) of the flags are tested through 
the software instructions.

Flag is an eight bit register which shows the status of
results store in accumulator,after executing an
instruction.There are 5 flag in 8085 microprocessor, 
     Sign:States whether the result is +ve or -ve.
     Zero:set when result is zero,otherwise reset.
      Parity:Set for even parity,otherwise reset.
      Carry:Set if there is an end carry.
      AC:Set if carry generated by leftmost nibble.


    Bus is a interconnecting device through which data
transfer is occur.

An accumulator is an 8-bit register that is a part of ALU
(Arithmatic-Logic Unit) of a processor.It is used for
temporary storage of 8-bit data and to perform arithmatic
operations like addition,subtraction,multiplication,division
or logical operations like AND,OR,XOR etc.The result of
operation is stored in accumulator.

data bus is bi-directional bcoz
same bus is used for data transmission from microprocessor
to memory location or input/output device and vice versa.
thats y data bus is bi-directional

8085 is 8 bit mp ,it is called 8 bit because it excutes 8 
bit of data at a time

8085 is a bit micro processor because it has 8 bit ALU

8085 is 8 bit microprocessor.

8085 is a 8-bit microporcessor...  it access 8 bit at a time

2^14 = 16384 address

8085 has von neumann architecture
it was derived after the name of mathematician john von neumann.
its having 16 address bus and 8 bit data bus.
it can access 2^16 individual memory location.