Discussion: 1. Explain what happens when the instruction sequence below is executed. LAHF MOV [BX+DI] , AH 2. What operation is performed by the instruction sequence that follows? MOV AH, [BX+SI] SAHF 3. What instruction should be executed to ensure that the carry flag is in the set state ? the reset state? 4. Which instruction when executed disables the interrupt interface?

Discussion: 1. Explain what happens when the instruction sequence below is executed. LAHF MOV [BX+DI] , AH 2. What operation is performed by the instruction sequence that follows? MOV AH, [BX+SI] SAHF 3. What instruction should be executed to ensure that the carry flag is in the set state ? the reset state? 4. Which instruction when executed disables the interrupt interface?

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter22: Sequence Control

Section: Chapter Questions

Problem 6SQ: Draw a symbol for a solid-state logic element AND.

See similar textbooks

Similar questions

1. Study this program, then answer the questions that follow: MOV AL, 64H ADD AL, 27H DAA a) What does the accumulator contain immediately after the ADD instruction is executed? What do the CY and AC flags contain? b) What does the accumulator contain after the DAA instruction is executed? What do the CY and AC flags contain?
6.) Select all the 8088 input signals that can cause the microprocessor to take an interrupt. a.) OSC b.) INTA c.) NMI d.) READY e.) INTR f.) IRQ 7.) Given the 8088 instruction "INT nn", how many possible types of interrupts are there for the 8088? a.) 2 b.) 4 c.) 8 d.) 256
List and describe two AVR instructions. As part of your description make sure that you list the operation for each instruction that is provided in the instruction set summary.
What other options are there besides OUTPUT for the pinmode instruction?
Given a 8-bit number at memory location 2050H. Write 8085 instruction to move the value stored at the following locations: Register B Accumulator 2052H Write a single program and show register and accumulator screenshot and also attach memory view. In sim8085 software.
The one-bit half adder's function? Total inputs and outputs? What logic gates did it use?
The 8085 instruction set does not include a Clear Accumulator instruction. Which single-byte logical instruction can perform this task?
The 8085-instruction set does not include a Clear Carry instruction. Which single-byte logical instruction can clear the carry without modifying the contents of the accumulator?
What is a transmission gate? Draw its circuit circuit diagram. How does it operate? What is the need for a transmission gate? What is it disadvantage?
What are the contents of the file registers WREG, 0x010, 0x020, 0x410, 0x420, after the following program is executed? Assume that all the register contents are initially zero.
In a simple copy machine, a stop signal, S, is to be generated to stop the machine operation and energize an indicator light whenever either of the following conditions exists: (1) there is no paper in the paper feeder tray; or (2) the two micro-switches in the paper path are activated, indicating a jam in the paper path. The presence of paper in the feeder tray is indicated by a HIGH at logic signal P. Each of the micro-switches produces a logic signal (Q and R) that goes HIGH whenever paper is passing over the switch to activate it. Design and build the logic circuit to produce a HIGH at output signal S for the stated conditions, and implement it using the two-input NAND chip.
In a simple copy machine, a stop signal, S, is to be generated to stop the machine operation and energize an indicator light whenever either of the following conditions exists: (1) there is no paper in the paper feeder tray; or (2) the two micro-switches in the paper path are activated, indicating a jam in the paper path. The presence of paper in the feeder tray is indicated by a HIGH at logic signal P. Each of the micro-switches produces a logic signal (Q and R) that goes HIGH whenever paper is passing over the switch to activate it. (3) Regardless the state of the previous two statements the stop signal is active if there is no internet connection to the machine or if the inside temperature sensor is active (This sensor is active if the inside temperature of the machine reaches a certain threshold temperature). Design and build the logic circuit to produce a HIGH at output signal S for the stated conditions.