8085 Architecture Quiz

What are the general-purpose registers in 8085 architecture?

• X

• Y

• Z

• B, C, D, E, H, L, A

Explain the different addressing modes in 8085.

• Immediate, Direct, Register, Register Indirect, Implicit

• Implicit Direct

• Direct Immediate

• Indirect Register

Give examples of data transfer instructions in 8085.

• MOV, MVI, LXI, LDA, STA, LHLD, SHLD, XCHG

• SUB

• ADD

• ADI

How does the ADD instruction work in 8085?

• The ADD instruction in 8085 works by multiplying the operand with the contents of the accumulator

• The ADD instruction in 8085 works by adding the operand (register or memory location) to the contents of the accumulator and storing the result back in the accumulator. The flags are updated based on the result, such as setting the carry flag if there is a carry out of the most significant bit.

• The ADD instruction in 8085 works by subtracting the operand from the contents of the accumulator

• The ADD instruction in 8085 works by dividing the operand by the contents of the accumulator

What are the control flow instructions in 8085?

• JMP, CALL, RET, JZ, JNZ, JC, JNC, JP, JM, JPE, JPO

• RETR

• JMPR

• CALLR

Describe the architecture of 8085.

• The architecture of 8085 includes a 16-bit microprocessor with a 8-bit address bus and an 16-bit data bus.

• The instruction set of 8085 consists of 100 instructions and 300 opcodes.

• The architecture of 8085 includes an 8-bit microprocessor with a 16-bit address bus and an 8-bit data bus. It has a 16-bit program counter and a 16-bit stack pointer. The instruction set consists of 74 instructions, and it has 246 opcodes. The architecture also includes various registers like the accumulator, general-purpose registers, and special-purpose registers.

• 8085 architecture has a 32-bit program counter and a 32-bit stack pointer.

What is the pin configuration of 8085?

• AD0-AD7, A15-A8, ALE, IO/M, RD, WR, S0-S2, RESET IN, INTR, SID, SOD, X1, X2, VCC

• AD0-AD7, A15-A8, ALE, IO/M, RD, WR, S0-S2, RESET IN, INTR, SID, SOD, X1, X2, VCC, GND

• AD0-AD7, A15-A8, ALE, IO/M, RD, WR, S0-S2, RESET IN, INTR, SID, SOD, X1, X2, GND

• AD0-AD6, A15-A8, ALE, IO/M, RD, WR, S0-S2, RESET IN, INTR, SID, SOD, X1, X2, VCC, GND

Which register is used as a temporary register in 8085?

• D

• A

• C

• B

What is the purpose of the accumulator register in 8085?

• The purpose of the accumulator register in 8085 is to store the results of arithmetic and logical operations.

• The accumulator register in 8085 is responsible for controlling the clock speed

• The accumulator register in 8085 is used for storing memory addresses

• The accumulator register in 8085 is designed for input/output operations

Explain the direct addressing mode in 8085.

• Direct addressing mode in 8085 involves specifying the operand address using a relative offset.

• Direct addressing mode in 8085 involves specifying the operand address indirectly within the instruction.

• Direct addressing mode in 8085 involves specifying the operand address directly within the instruction.

• Direct addressing mode in 8085 requires the use of a register to access the operand address.