Why is 8085 called so?

Why is 8085 called so?
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because 8085 is one of the landmark of 8-bit microprocessor history. it was more simple in construction than 8080. higher bit microprocessor can be understood very easily if one has prior knowledge of 8085.
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Why 8085 processor is called an 8 bit processor? a) Because 8085 processor has 8 bit ALU. b) Because 8085 processor has 8 bit data bus. c) a & b. Why 8085 processor is called an 8 bit processor? a) Because 8085 processor has 8 bit ALU. b) Because 8085 processor has 8 bit data bus. c) a & b.

Description : Why 8085 processor is called an 8 bit processor? a) Because 8085 processor has 8 bit ALU. b) Because 8085 processor has 8 bit data bus. c) a & b.

Last Answer : a) Because 8085 processor has 8 bit ALU.

In 8085 Which Is Called As High Order / Low Order Register?

Description : In 8085 Which Is Called As High Order / Low Order Register?

Last Answer : Answer :Flag is called as Low order register & Accumulator is called as High order Register.

Why is the data bus in 8085 bidirectional?

Description : Why is the data bus in 8085 bidirectional?

Last Answer : So that the processor can both read and write data.

What is Microprocessor 8085?

Description : What is Microprocessor 8085?

Last Answer : 8085 is a 8 bit microprocessor designed by Intel.

What is the microprocessor - 8085 architecture?

Description : What is the microprocessor - 8085 architecture?

Last Answer : 8085 Architecture - II Written by: shankar â⠬¢ Edited by: KennethSleightPublished Sep 30, 2009 â⠬¢ Related Guides: IntelLearn in detail about the functions and working of flags, the timing ... ALU alone cannot successfully process a data and provide the result to the programmer. There are

What is the difference between 8085 and 8086?

Description : What is the difference between 8085 and 8086?

Last Answer : The major difference between the 8085 and the 8086/8088 is that the 8085 is an 8 bit computer, and the 8086/8088 is a 16 bit computer.

What is function of ALE in 8085?

Description : What is function of ALE in 8085?

Last Answer : ALE is a signal that means that the data bus contains the lower order address bus values. External hardware should strobe the data bus during ALE time, and lock it on the falling edge of ALE.

How many machine cycles does 8085 have, mention them

Description : How many machine cycles does 8085 have, mention them

Last Answer : The 8085 have seven machine cycles. They are • Opcode fetch • Memory read • Memory write • I/O read • I/O write • Interrupt acknowledge • Bus idle

How many interrupts does 8085 have, mention them

Description : How many interrupts does 8085 have, mention them

Last Answer : The 8085 has 5 interrupt signals; they are INTR, RST7.5, RST6.5, RST5.5 and TRAP

Steps involved to fetch a byte in 8085

Description : Steps involved to fetch a byte in 8085

Last Answer : i. The PC places the 16-bit memory address on the address bus ii. The control unit sends the control signal RD to enable the memory chip iii. The byte from ... byte is placed in the instruction decoder of the microprocessor and the task is carried out according to the instruction

What are operations performed on data in 8085

Description : What are operations performed on data in 8085

Last Answer : The various operations performed are • Store 8-bit data • Perform arithmetic and logical operations • Test for conditions • Sequence the execution of instructions • Store data temporarily during execution in the defined R/W memory locations called the stack

What is the signal classification of 8085

Description : What is the signal classification of 8085

Last Answer : All the signals of 8085 can be classified into 6 groups • Address bus • Data bus • Control and status signals • Power supply and frequency signals • Externally initiated signals • Serial I/O ports

Explain priority interrupts of 8085.

Description : Explain priority interrupts of 8085.

Last Answer : The 8085 microprocessor has five interrupt inputs. They are TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. These interrupts have a fixed priority of interrupt service. If two or more interrupts go ... 8085 is shown in the table. Interrupts Priority TRAP RST 7.5 RST 6.5 RST 5.5 INTR

List the four instructions which control the interrupt structure of the 8085 microprocessor.

Description : List the four instructions which control the interrupt structure of the 8085 microprocessor.

Last Answer : • DI ( Disable Interrupts ) • EI ( Enable Interrupts ) • RIM ( Read Interrupt Masks ) • SIM ( Set Interrupt Masks )

List out the five categories of the 8085 instructions. Give examples of the instructions for each group.

Description : List out the five categories of the 8085 instructions. Give examples of the instructions for each group.

Last Answer : • Data transfer group – MOV, MVI, LXI. • Arithmetic group – ADD, SUB, INR. • Logical group –ANA, XRA, CMP. • Branch group – JMP, JNZ, CALL. • Stack I/O and Machine control group – PUSH, POP, IN, HLT.

How many operations are there in the instruction set of 8085 microprocessor?

Description : How many operations are there in the instruction set of 8085 microprocessor?

Last Answer : There are 74 operations in the 8085 microprocessor.

What is the function of IO/M signal in the 8085?

Description : What is the function of IO/M signal in the 8085?

Last Answer : It is a status signal. It is used to differentiate between memory locations and I/O operations. When this signal is low (IO/M = 0) it denotes the memory related operations. When this signal is high (IO/M = 1) it denotes an I/O operation.

List the allowed register pairs of 8085.

Description : List the allowed register pairs of 8085.

Last Answer : • B-C register pair • D-E register pair • H-L register pair

List the 16 – bit registers of 8085 microprocessor.

Description : List the 16 – bit registers of 8085 microprocessor.

Last Answer : Stack pointer (SP) and Program counter (PC).

What is Microprocessor? Give the power supply & clock frequency of 8085

Description : What is Microprocessor? Give the power supply & clock frequency of 8085

Last Answer : A microprocessor is a multipurpose, programmable logic device that reads binary instructions from a storage device called memory accepts binary data as input and processes data according ... provides result as output. The power supply of 8085 is +5V and clock frequency in 3MHz.

The stack pointer in the 8085 microprocessor is a: a) 16 bit register that points to stack memory locations b) 16 bit accumulator c) Memory location in the stack d) None of The Above

Description : The stack pointer in the 8085 microprocessor is a: a) 16 bit register that points to stack memory locations b) 16 bit accumulator c) Memory location in the stack d) None of The Above

Last Answer : a) 16 bit register that points to stack memory locations

What type of architecture is used in 8085 microprocessor?

Description : What type of architecture is used in 8085 microprocessor?

Last Answer : Ans- INTEL 8085 is a 8-bit microprocessor. It's based on Von-Neumann architecture in which the data and instructions are in the same memory space without any distinction between them. Data line: 8-bits--Can ... of data at a time. Address line: 16-bits--Can address upto 2^16(64KB) of address space.

What is function of ALE in 8085 microprocessor?

Description : What is function of ALE in 8085 microprocessor?

Last Answer : Ans-AlE stands for the address latch enableit 's working is that it differentiate the address and data bus in microprocessor.when it is high it select address bus .when it is low it select data bus.

what is the main difference between 8085 and 8086 processors?

Description : what is the main difference between 8085 and 8086 processors?

Last Answer : Ans-8085 is a 8 bit microprocessor,having 16-bit address bus.8086 is a 16-bit microprocessor having 20-bit address bus.

How many speed of 8088,8085,8086 microprocessor: a. 2.5 Million instruction per second b. 1.5 Million instruction per second c. 3.5 Million instruction per second d. 1.6 Million instruction per second

Description : How many speed of 8088,8085,8086 microprocessor: a. 2.5 Million instruction per second b. 1.5 Million instruction per second c. 3.5 Million instruction per second d. 1.6 Million instruction per second

Last Answer : a. 2.5 Million instruction per second

Which is 16 Bit microprocessor: a. 8088 b. 8086 c. 8085 d. All of these

Description : Which is 16 Bit microprocessor: a. 8088 b. 8086 c. 8085 d. All of these

Last Answer : d. All of these

Which is the main feature of 8085: a. Internal clock generator b. Internal system controller c. Higher clock frequency d. All of these

Description : Which is the main feature of 8085: a. Internal clock generator b. Internal system controller c. Higher clock frequency d. All of these

Last Answer : d. All of these

In 1977 which corporation introduced an updated version of the 8080- the 8085: a. Motorola b. Intel c. Rockwell d. National

Description : In 1977 which corporation introduced an updated version of the 8080- the 8085: a. Motorola b. Intel c. Rockwell d. National

Last Answer : b. Intel

Which year Intel corporation introduced an updated version of the 8080- the 8085: a. 1965 b. 1976 c. 1977 d. 1985

Description : Which year Intel corporation introduced an updated version of the 8080- the 8085: a. 1965 b. 1976 c. 1977 d. 1985

Last Answer : c. 1977

Intel used HMOS technology to recreate_____: a. 8084 A b. 8086 A c. 8085 A d. 8088 A

Description : Intel used HMOS technology to recreate_____: a. 8084 A b. 8086 A c. 8085 A d. 8088 A

Last Answer : c. 8085 A

Which are some of popular processor: a. Motorola 6800 and 6809 b. Intel 8085 c. Zilog Z80 d. All the above

Description : Which are some of popular processor: a. Motorola 6800 and 6809 b. Intel 8085 c. Zilog Z80 d. All the above

Last Answer : d. All the above

The___ was very successful in the calculator market at that time: a. Motorola 6800 and 6809 b. Microprocessor 4004 c. Intel 8085 d. None of these

Description : The___ was very successful in the calculator market at that time: a. Motorola 6800 and 6809 b. Microprocessor 4004 c. Intel 8085 d. None of these

Last Answer : b. Microprocessor 4004

Microprocessor 8085 can address location upto a. 32K b. 128K c. 64K d. 1M

Description : Microprocessor 8085 can address location upto a. 32K b. 128K c. 64K d. 1M

Last Answer : c. 64K

.In an 8085 based system, the maximum number of input output devices can be connectedusing I/0 mapped I/O method isa) 64 b) 512 c) 256 d) 65536

Description : .In an 8085 based system, the maximum number of input output devices can be connectedusing I/0 mapped I/O method isa) 64 b) 512 c) 256 d) 65536

Last Answer : b) 512

8253, 8257 c) 8257,8251 d)8251,825721.Consider the following set of 8085 instruction.MVI A,82HORA AJP DSPLYXRA ADSPLY:OUT PORT1HLT.The output at PORT1 isa) 00H b) FFH c) 92H d) 11H

Description : 8253, 8257 c) 8257,8251 d)8251,825721.Consider the following set of 8085 instruction.MVI A,82HORA AJP DSPLYXRA ADSPLY:OUT PORT1HLT.The output at PORT1 isa) 00H b) FFH c) 92H d) 11H

Last Answer : a) 00H

The number of software interrupts in 8085 is ____ a) 5 b) 8

Description : The number of software interrupts in 8085 is ____ a) 5 b) 8

Last Answer : b) 8

To put the 8085 microprocessor in the wait state(i) lower the-HOLD input (ii) lower the READY input (iii) raise the HOLD input(iv) raise the READY input

Description : To put the 8085 microprocessor in the wait state(i) lower the-HOLD input (ii) lower the READY input (iii) raise the HOLD input(iv) raise the READY input

Last Answer : (ii) lower the READY input

In an 8085 microprocessor, the instruction CMP B has been executed while the contentsof accumulator is less than that of register B. As a result carry flag and zero flag will berespectively (A) set, reset (B) reset, set (C) reset, reset (D) set, set

Description : In an 8085 microprocessor, the instruction CMP B has been executed while the contentsof accumulator is less than that of register B. As a result carry flag and zero flag will berespectively (A) set, reset (B) reset, set (C) reset, reset (D) set, set

Last Answer : (A) set, reset

Accumulator based microprocessor example are: a. Intel 8085 b. Motorola 6809 c. A and B d. None of these

Description : Accumulator based microprocessor example are: a. Intel 8085 b. Motorola 6809 c. A and B d. None of these

Last Answer : c. A and B

Which stack is used in 8085? a) FIFO b) LIFO c) FILO

Description : Which stack is used in 8085? a) FIFO b) LIFO c) FILO

Last Answer : b) LIFO

Which interrupt is not level sensitive in 8085? a) RST6.5 is a raising edge-trigging interrupt. b) RST7.5 is a raising edge-trigging interrupt. c) a & b.

Description : Which interrupt is not level sensitive in 8085? a) RST6.5 is a raising edge-trigging interrupt. b) RST7.5 is a raising edge-trigging interrupt. c) a & b.

Last Answer : b) RST7.5 is a raising edge-trigging interrupt.

In 8085 name the 16 bit registers? a) Stack pointer b) Program counter c) a & b

Description : In 8085 name the 16 bit registers? a) Stack pointer b) Program counter c) a & b

Last Answer : c) a & b

Describe Briefly The Accumulator Register Of 8085.?

Description : Describe Briefly The Accumulator Register Of 8085.?

Last Answer : Answer :It is one of the most important 8 bit register of 8085 It is responsible for coordinating input and output to and from the microprocessor through it. The primary purpose of ... logical operations. This accumulator register is mainly used for arithmetic, logical, store and rotate operations.

Explain Briefly The Flag Register In The 8085 Microprocessor.?

Description : Explain Briefly The Flag Register In The 8085 Microprocessor.?

Last Answer : Answer :The flag register in 8085 is an 8-bit register which contains 5 bit positions. These five flags are of 1bit F/F and are known as zero, sign, carry, parity and auxiliary carry. ... addition and subtraction operations. The parity flag is used for results containing an even number of one's.

Explain In Brief The Control And Timing Circuitry Of The 8085.?

Description : Explain In Brief The Control And Timing Circuitry Of The 8085.?

Last Answer : Answer :The timing and control circuitry section of the 8085 is responsible for the generation of timing and control signals so that instructions can be executed. The types of signals involved ... of control signals for the executions of instructions and for the sync between external devices.

Does The 8085 Support Externally Initiated Operations? If Yes How?

Description : Does The 8085 Support Externally Initiated Operations? If Yes How?

Last Answer : Answer :Yes the 8085 does support several externally initiated operations. The possible operations and the corresponding pins for them in the 8085 are as follows: It supports resetting ( this is possible ... It also has a HOLD pin which can basically pause the operation till required/ as required.

Mention The Different Types Of Data Transfers Possible In The 8085.?

Description : Mention The Different Types Of Data Transfers Possible In The 8085.?

Last Answer : Answer :The various types of data transfer operations possible are: Data transfer is possible between two registers. It is also possible between a memory location and a register. Also it can occur between ... . In reality data is never transferred it can only be copied from one location to another.

Explain All The Addressing Modes Of The 8085 With The Help Of Examples.?

Description : Explain All The Addressing Modes Of The 8085 With The Help Of Examples.?

Last Answer : Answer :The various types of addressing modes of the 8085 are as follows: Direct addressing: The instructions in itself contain the opearand. For ex. STA5513H or in/out instructions such as IN PORT C. ... etc. Implicit addressing: this form of addressing contains no operands. For ex. RAR, CMA etc.

Explain Briefly What Happens When The Intr Signal Goes High In The 8085?

Description : Explain Briefly What Happens When The Intr Signal Goes High In The 8085?

Last Answer : Answer :The INTR is a maskable interrupt for the 8085. It has the lowest priority and is also non vectored. When this INTR signal goes into the high state the following things occur / ... the processor saves the address of new instruction into the STACK and an interrupt service subroutine begins.

Explain Briefly The Trap Input For The 8085.?

Description : Explain Briefly The Trap Input For The 8085.?

Last Answer : Answer :The TRAP input is sensitive to both edge and level. The pulse width for this signal should be in excess as compared to the normal noise width. A second trap will never be able to ... to low transition. The pulse widths are wider than normal widths so as to prevent unwanted false triggers.