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arithmetic operationsvarious types of arithmetic operations like addition subtraction increment and decrement are performed in 8085
out output instruction this instruction is used send data byte stored in the accumulator to the output port whose
input output operations many times microprocessor has to accept data from input port and send data to output port to interact
shld store hl pair direct instruction this instruction is used to store the contents of hl register pair to memory address
lhld load hl pair direct instructionthis instruction is used to copy the content of memory location specified by
lda load accumulator direct instructionthis instruction is used to copy data from memory whose address is directly specified in
stax store accumulator indirect instruction this instruction is used to copy data from accumulator to the memory location pointed
ldax load accumulator indirect instruction this instruction is used to copy data from memory location pointed by register pair
cpopy 16 bit data register pair example copy 16 bit data 3 e 21h in register pair bcsolution the statement islxi b
lki load register pair immediate instruction this instruction is used to copy or load 16 bit data specified in the
8 bit data to memorythis form of the instruction is used to copy 8 bit data directly to the memory location pointed
8 bit data to register this form of the instruction is used to copy 8 bit data directly to the register location specified
mvi move immediate instruction this form of the instruction is used to copy 8bit data specified in the instruction
example memory to registers example write assembly language statement to copy data byte 36h stored at 2025 h
memory to registerthis instruction is used to copy the contents of a memory locations whose address is specified by the hl
example register to memory example write assembly language statement to copy 25h stored in register d to memory location
mov move instructionit copies the contents of the sources register into destination register the general format is this instruction is
data copy operationsinstructions which are used to copy data from one location to another location kept in this category the
complete instruction set of 8085 microprocessor there are total 256 instructions in 8085 microprocessor these instructions are classified
normal 0 false false false en-in x-none x-none
de multiplexing address data bus ad7- ad0as it is already discussed that lower order address bus a7- a0 is multiplexed with data bus
sod outputserial output data single bit can be sent out through this pin using sim command discussed in details in
sid inputserial input data single bit can be accepted through this pin using rim command discussed in details in
serial input output ports for serial input and output there are two pins in 8085
resetin inputit is an active low signal when it goes low program counter is reset to zero and busses are tri stated it also