How many addresses does 8085 generate?

Intel 8085 is an 8-bit microprocessor which has 16 address line for 16-bit address of a memory location. 8 higher order address bits are transferred through 8 bit lines out of this 16 address line while remaining lower order 8 bits of the address are sent through another 8 lines multiplexed with the 8-bit data lines.

How one take the control of buses and transfer data directly between source and destination with help of hold and Hlda signal?

Decoder then takes instruction and decodes or interprets the instruction. Decoded instruction then passed to next stage. Memory Address Register: Holds address, received from PC of next program instruction. Control Generator: It generates signal within μP to carry out the instructions which have been decoded.

How does a microprocessor communicate with memory?

A data bus is used to transfer data between the memory and the CPU. The data bus is bidirectional and the address bus is unidirectional. The control bus controls both read and write operations. The read operation fetches data from memory and transfers to MDR.

How many address lines of the 8085 microprocessor are required to address 1024 memory locations?

It means that a memory of 2048 words, where each word is 4 bits. So to address 2048 (or 2K, where K means 2^10 or 1024), you need 11 bits, so 11 address lines.

What are instructions of 8085?

Data Transfer Group

Instruction Set	Explanation	States
MOV M, r [[H-L]]←[r]	Move the content of register to memory	7
MVI r, data [r] ←data	Move immediate data to register	7
LXI rp, data 16 [rp] ←data 16 bits, [rh] ←8 MSBs, [rl] ←8 LSBs of data	Load Register pair immediate	10
LDA addr [A] ←[addr]	Load Accumulator direct	13

What is the memory communication?

Shared Memory Communications (SMC) enables two SMC capable peers to communicate by using memory buffers that each peer allocates for the partner’s use. There are two types of Shared Memory Communications: Shared Memory Communications over Remote Direct Memory Access (SMC-R)

Which of the following addressing technique is used in 8085?

Direct Addressing Mode – In direct addressing mode, the data to be operated is available inside a memory location and that memory location is directly specified as an operand. The operand is directly available in the instruction itself.

What is the architecture of 8085 microprocessor?

The architecture of the 8085 microprocessor mainly includes the timing & control unit, Arithmetic and logic unit, decoder, instruction register, interrupt control, a register array, serial input/output control. The most important part of the microprocessor is the central processing unit.

How many address lines are needed to address each?

ANSWER: 11 It means that a memory of 2048 words, where each word is 4 bits. So to address 2048 (or 2K, where K means 2^10 or 1024), you need 11 bits, so 11 address lines.

What is the configuration of 8085 microprocessor?

8085 Microprocessor Pin Configuration. The 40 pins of the microprocessor can be divided into six groups such as address bus, data bus, control signals & status signals; power supply & frequency, externally started signals and serial input/output ports.

What are the in and out instructions in 8085?

They are the IN and OUT instructions. The IN or OUT instruction mnemonics should be followed by an 8-bit port address. Thus we can have 2 8 = 256 input ports and 256 output ports are possible in 8085-based microcomputers. IN and OUT both are 2-Bytes instructions.

How many I/O ports are there in 8085 microprocessor?

In 8085 Instruction set, there are two instructions in 8085 for communication with I/O ports. They are the IN and OUT instructions. The IN or OUT instruction mnemonics should be followed by an 8-bit port address. Thus we can have 2 8 = 256 input ports and 256 output ports are possible in 8085-based microcomputers.

What are the different types of addressing modes in 8085 microprocessor?

Types of addressing modes – In 8085 microprocessor there are 5 types of addressing modes: 1 Immediate Addressing Mode –. 2 Register Addressing Mode –. 3 Direct Addressing Mode –. 4 Register Indirect Addressing Mode –. 5 Implied/Implicit Addressing Mode –.

What are hardware and software interrupts in 8085?

Hardware and Software Interrupts – When microprocessors receive interrupt signals through pins (hardware) of microprocessor, they are known as Hardware Interrupts. There are 5 Hardware Interrupts in 8085 microprocessor. They are – INTR, RST 7.5, RST 6.5, RST 5.5, TRAP

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