Interrupts
•Download as PPT, PDF•
1 like•926 views
The document discusses interrupts in the Intel 8085 microprocessor. There are five hardware interrupts - TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. TRAP has the highest priority and is a non-maskable, edge- and level-triggered interrupt used for power failures or emergencies. The interrupts differ in whether they are maskable, vectored, and what triggers them. The priority order from highest to lowest is TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR.
Report
Share
Report
Share
![What is an Interrupt? ,[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Recommended
ITFT_Interrupt
An interrupt pauses the normal execution of a microprocessor. When an interrupt occurs, the program counter is saved to the stack and interrupts are disabled. An interrupt acknowledge signal is sent and the service routine address is executed. After servicing, the original program counter is retrieved from the stack and execution resumes. There are hardware and software interrupts. Hardware interrupts come from I/O devices and software from CPU instructions. Interrupts can be maskable/non-maskable, vectored/non-vectored, edge/level-triggered, and have different priorities like the 8085's TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR interrupts.
8085 interrupt.....
The document discusses interrupts in the 8085 microprocessor. It defines an interrupt as an external device getting the microprocessor's attention. The 8085 uses an interrupt enable flip-flop controlled by the EI and DI instructions to enable and disable interrupt processing. Interrupts are classified as maskable or non-maskable, and vectored or non-vectored. The 8085 has five types of interrupts - INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP - which have different priorities. The SIM and RIM instructions are used to enable maskable interrupts under program control and sense pending interrupts while one is being served.
8085 interrupts
The document discusses interrupts in the 8085 microprocessor. It describes how interrupts work, including how the 8085 handles different types of interrupts like maskable, non-maskable, vectored and non-vectored interrupts. It provides details on the interrupt handling process, interrupt priorities, the interrupt mask and how individual interrupts can be enabled or disabled.
Interruptsof8085
The document discusses interrupts for the 8085 microprocessor. It describes hardware interrupts from peripheral devices which can suspend normal execution to service requests. These include maskable interrupts like RST 7.5, 6.5, 5.5, and INTR which can be enabled/disabled, and non-maskable TRAP interrupt. Software interrupts using RST instructions allow transferring to subroutines. Interrupts save the program counter, service the request, then return program flow on RET.
Interrupts in 8085
The document discusses interrupts in the 8085 microprocessor. It describes the concept of interrupts, where a peripheral device sends a signal to the CPU requesting attention. When an interrupt occurs, the CPU stops its current process and executes an interrupt service routine. There are three main types of interrupts - external, internal, and software interrupts. External interrupts are initiated by external devices, internal interrupts occur due to program errors, and software interrupts are initiated by executing an instruction. The document provides details on how interrupts are handled, including the interrupt acknowledge process, interrupt priorities, and methods for servicing multiple interrupts.
8085 interrupts
The document discusses interrupts in microprocessors. It defines an interrupt as an external device getting the attention of the microprocessor. Interrupts can be classified as maskable or non-maskable, and vectored or non-vectored. When an interrupt occurs, the microprocessor suspends its current program and jumps to an interrupt service routine (ISR) to handle the interrupt. The 8085 microprocessor has 5 interrupt lines - INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP. INTR is the only non-vectored interrupt, while the others are vectored to known memory locations.
Interrupts
The document discusses interrupts for the 8085 microprocessor. It defines an interrupt as a signal sent by an external device to request that the processor perform a particular task. When an interrupt occurs, the processor suspends the current program and jumps to an interrupt service routine (ISR) corresponding to that interrupt. Interrupts can be hardware interrupts, caused by signals on processor pins, or software interrupts, caused by specific instructions. The 8085 has 5 hardware interrupts of varying priority levels - TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. It also has 8 software interrupts from RST 0 to RST 7. Each interrupt type has unique characteristics regarding priority
Interrupts
This document provides an overview of interrupts in the 8086 microprocessor. It defines an interrupt as an event that breaks normal program execution to service an interrupt request. Interrupts can be triggered by hardware signals from peripherals or software interrupt instructions. The 8086 supports hardware interrupts on the INTR and NMI pins, which can be maskable or non-maskable. It also supports 256 software interrupt types. Common uses of interrupts include servicing devices like keyboards and handling exceptions.
Recommended
ITFT_Interrupt
An interrupt pauses the normal execution of a microprocessor. When an interrupt occurs, the program counter is saved to the stack and interrupts are disabled. An interrupt acknowledge signal is sent and the service routine address is executed. After servicing, the original program counter is retrieved from the stack and execution resumes. There are hardware and software interrupts. Hardware interrupts come from I/O devices and software from CPU instructions. Interrupts can be maskable/non-maskable, vectored/non-vectored, edge/level-triggered, and have different priorities like the 8085's TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR interrupts.
8085 interrupt.....
The document discusses interrupts in the 8085 microprocessor. It defines an interrupt as an external device getting the microprocessor's attention. The 8085 uses an interrupt enable flip-flop controlled by the EI and DI instructions to enable and disable interrupt processing. Interrupts are classified as maskable or non-maskable, and vectored or non-vectored. The 8085 has five types of interrupts - INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP - which have different priorities. The SIM and RIM instructions are used to enable maskable interrupts under program control and sense pending interrupts while one is being served.
8085 interrupts
The document discusses interrupts in the 8085 microprocessor. It describes how interrupts work, including how the 8085 handles different types of interrupts like maskable, non-maskable, vectored and non-vectored interrupts. It provides details on the interrupt handling process, interrupt priorities, the interrupt mask and how individual interrupts can be enabled or disabled.
Interruptsof8085
The document discusses interrupts for the 8085 microprocessor. It describes hardware interrupts from peripheral devices which can suspend normal execution to service requests. These include maskable interrupts like RST 7.5, 6.5, 5.5, and INTR which can be enabled/disabled, and non-maskable TRAP interrupt. Software interrupts using RST instructions allow transferring to subroutines. Interrupts save the program counter, service the request, then return program flow on RET.
Interrupts in 8085
The document discusses interrupts in the 8085 microprocessor. It describes the concept of interrupts, where a peripheral device sends a signal to the CPU requesting attention. When an interrupt occurs, the CPU stops its current process and executes an interrupt service routine. There are three main types of interrupts - external, internal, and software interrupts. External interrupts are initiated by external devices, internal interrupts occur due to program errors, and software interrupts are initiated by executing an instruction. The document provides details on how interrupts are handled, including the interrupt acknowledge process, interrupt priorities, and methods for servicing multiple interrupts.
8085 interrupts
The document discusses interrupts in microprocessors. It defines an interrupt as an external device getting the attention of the microprocessor. Interrupts can be classified as maskable or non-maskable, and vectored or non-vectored. When an interrupt occurs, the microprocessor suspends its current program and jumps to an interrupt service routine (ISR) to handle the interrupt. The 8085 microprocessor has 5 interrupt lines - INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP. INTR is the only non-vectored interrupt, while the others are vectored to known memory locations.
Interrupts
The document discusses interrupts for the 8085 microprocessor. It defines an interrupt as a signal sent by an external device to request that the processor perform a particular task. When an interrupt occurs, the processor suspends the current program and jumps to an interrupt service routine (ISR) corresponding to that interrupt. Interrupts can be hardware interrupts, caused by signals on processor pins, or software interrupts, caused by specific instructions. The 8085 has 5 hardware interrupts of varying priority levels - TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. It also has 8 software interrupts from RST 0 to RST 7. Each interrupt type has unique characteristics regarding priority
Interrupts
This document provides an overview of interrupts in the 8086 microprocessor. It defines an interrupt as an event that breaks normal program execution to service an interrupt request. Interrupts can be triggered by hardware signals from peripherals or software interrupt instructions. The 8086 supports hardware interrupts on the INTR and NMI pins, which can be maskable or non-maskable. It also supports 256 software interrupt types. Common uses of interrupts include servicing devices like keyboards and handling exceptions.
Interrupt of 8085
The document discusses the interrupt system of the 8085 microprocessor. It describes hardware interrupts and software interrupts. There are 5 types of hardware interrupts - TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. Hardware interrupts are asynchronous and have lower priority than software interrupts. The 8 software interrupts are RST0-RST7. Software interrupts are synchronous and transfer program control to an interrupt service routine. The document also covers interrupt related instructions like EI, DI, SIM, and RIM.
1206 Interrupts Of 8085
The document discusses interrupts in the 8085 microprocessor. It describes interrupt types as maskable or non-maskable and explains the interrupt process where the processor pauses main program execution to service interrupt requests. It provides details on the interrupt vector table and using instructions like EI, SIM to enable interrupts and set the interrupt mask. An example is given of blinking an LED display using interrupt-based pattern changes.
8085 interrupts
The document discusses interrupts in the 8085 microprocessor. It describes how interrupts work, including the different types of interrupts, how interrupt requests are handled, and the interrupt acknowledge process. It also covers interrupt masking, vectored interrupts, and the interrupt structures in 8085 systems.
Interrupts of 8085
The document discusses interrupts in computers. It defines interrupts as events external to the currently executing process that cause process suspension so it can be resumed later. Interrupts allow I/O devices to get CPU attention asynchronously. The document contrasts interrupt handling with polling and describes hardware/software, masked/non-masked, and vectored/non-vectored interrupt types. It also explains interrupt processing, including interrupt acknowledgement and use of interrupt vectors and tables.
Presentation on Intel 8085 processor
The document discusses interrupt control and management in operating systems. It covers various topics related to interrupts in microprocessors like the 8085 including:
- Classification of interrupts as maskable or non-maskable, vectored or non-vectored.
- What happens when a microprocessor is interrupted and how it responds by jumping to an interrupt service routine.
- The different interrupts in the 8085 microprocessor including INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP.
- How to allow multiple devices to interrupt using priorities and a priority encoder.
- How the 8085 handles multiple interrupts and priorities between RST 5.5
Interrupt
Interrupt is a process that holds the microprocessor for a while and decide what will be next job that will done by the microprocesssor. Interrupt types ,SIM ,RIM ,DMA ,Maskable interrupt ,Non-Maskable interrupt,Trap,RST and many more has been discussed on this powerpoint . You will be able to know each of the interrupt and their functions from the slides ,some diagram that will help you to develop your knowledge about interrupt . Hardware interrupts are used by devices to communicate that they require attention from the operating system.Hardware interrupts are used by devices to communicate that they require attention from the operating system.Internally, hardware interrupts are implemented using electronic alerting signals that are sent to the processor from an external device, which is either a part of the computer itself, such as a disk controller, or an external peripheral. For example, pressing a key on the keyboard or moving the mouse triggers hardware interrupts that cause the processor to read the keystroke or mouse position.software interrupt is caused either by an exceptional condition in the processor itself, or a special instruction in the instruction set which causes an interrupt when it is executed. The former is often called a trap or exception and is used for errors or events occurring during program execution that are exceptional enough that they cannot be handled within the program itself. For example, a divide-by-zero exception will be thrown if the processor's arithmetic logic unit is commanded to divide a number by zero as this instruction is an error and impossible. The operating system will catch this exception, and can choose to abort the instruction. Software interrupt instructions can function similarly to subroutine calls and are used for a variety of purposes, such as to request services from device drivers, like interrupts sent to and from a disk controller to request reading or writing of data to and from the disk.
Types of Interrupts with details Mi ppt
The document discusses interrupts in microprocessors using the 8085 as an example. It defines interrupts as asynchronous signals from external devices that cause the microprocessor to suspend its current program and service the interrupt. Interrupts can be classified as maskable or non-maskable, and vectored or non-vectored. The 8085 has one non-maskable interrupt (TRAP) and four maskable interrupts - INTR, RST 5.5, RST 6.5, and RST 7.5. Maskable interrupts can be enabled or disabled using instructions while non-maskable interrupts always have priority. The document explains the interrupt handling process and priorities on the 8085 in detail.
Atv32 how to diagnose a saff fault
The document provides guidance on diagnosing SAFF (Safety Function Fault) errors on ATV32 variable speed drives. It discusses the evolution of safety features on ATV32 drives and gives tools and methods for determining the root cause of SAFF faults. These include checking safety fault registers accessible via the keypad, commissioning software, or a safety diagnostic tool. Examples are provided of using register values and fault histories to diagnose issues like internal communication interruptions, instability on the STO input, or problems with the safety configuration. Recommendations emphasize the need to check the drive version, fault conditions, and use measurement tools to fully understand the cause of any SAFF faults.
Playing with R L C Circuits
The document discusses building a function generator and oscilloscope to experiment with RLC circuits. It explains RLC basics like impedance and phase shifts. The RC circuit is analyzed in detail, showing the voltage and current relationships. Predictions are made for different RC combinations. Code for generating sine waves with a microcontroller is provided. Finally, frequency filters using RC circuits are discussed.
S emb t5-arch_io
This document discusses input/output (I/O) mechanisms for embedded systems, including I/O devices, serial communication, CPU interfaces, programming I/O, memory-mapped I/O for ARM and MSP430 architectures, and interrupt-driven I/O using polling, peek/poke, and interrupt service routines (ISRs). It also covers interrupt priorities and vectors, interrupt processing, and returning from interrupts specifically for the ARM and MSP430 processors.
Detection & counting of missing pulses with generation
This is a final year project of B.Tech. Here we generate a random pulse train with some missing pulse and detect the position of missing pulses. and with that we count the no of pulses in some equal time span and from there we count the number of missing pulses in the span of time.
8085 interrupts
The document discusses interrupts in microprocessors. It defines interrupts as signals initiated by external devices to get the processor's attention. When an interrupt occurs, the processor suspends the current program and jumps to an interrupt service routine (ISR) before returning to the main program. Interrupts can be classified as maskable, non-maskable, vectored, non-vectored, hardware, or software. The 8085 microprocessor has specific interrupt pins and instructions to manage interrupts.
Hardware-Assisted Rootkits & Instrumentation
Security researchers have limited options when it comes to debuggers and dynamic binary instrumentation tools for ARM-based devices. Hardware-based solutions can be expensive or destructive, while software tools are often restricted to user mode. Presented at REcon 2016, this presentation explores a common but often ignored feature of the ARM debug architecture in search of other options. Digging deeper into this hardware component reveals many interesting use-cases for researchers ranging from debugging and instrumentation to building a novel rootkit.
PowerMate15 Technical Specification
PowerMate15 is a digital switching solution developed for the transportation market. It provides in one package state of the art digital switching technology and easy to understand user interface for designers with an extensive and sophisticated menu of switching solutions.
Jtagppt
The document discusses JTAG (Joint Test Action Group), which defines a standard interface for debugging, programming, and testing microcontrollers and other components. JTAG enables components to be tested and programmed using a single connector and allows controlling the clock cycles of a microcontroller through software, enabling hardware breakpoints. It works by shifting test vectors into boundary scan registers connected to input/output pins to test connections between components.
SenseTek Stratos HSSD-2 installers handbook
www.sensetek.nl
Branddetectie | Aspiratiesystemen | Thermische kabelsystemen | Beamdetectie | Vlamdetectie | Vloeistofdetectie | Voedingen | Proefbrandmateriaal
At89c4051
The AT89C4051 is a low-voltage, high-performance CMOS 8-bit microcontroller with
4K bytes of Flash programmable and erasable read-only memory. The device is manufactured
using Atmel’s high-density nonvolatile memory technology and is
compatible with the industry-standard MCS-51 instruction set. By combining a versatile
8-bit CPU with Flash on a monolithic chip, the Atmel AT89C4051 is a powerful
microcontroller which provides a highly-flexible and cost-effective solution to many
embedded control applications.
The AT89C4051 provides the following standard features: 4K bytes of Flash,
128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five-vector, two-level interrupt
architecture, a full duplex serial port, a precision analog comparator, on-chip
oscillator and clock circuitry. In addition, the AT89C4051 is designed with static logic
for operation down to zero frequency and supports two software-selectable power
saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters,
serial port and interrupt system to continue functioning. The power-down mode saves
the RAM contents but freezes the oscillator disabling all other chip functions until the
next hardware reset.
Microprocessor Architecture 4
8085 Microprocessor architecture ,Interrupt control-software interrupts ,Hardware Interrupts,Interrupt priorities are explained with examples.
Interrupts of microprocessor 8085
The document discusses interrupts in the 8085 microprocessor. It defines interrupts as a mechanism to suspend normal execution and service external devices or instructions. The 8085 has hardware and software interrupts. Hardware interrupts can be maskable or non-maskable. Maskable interrupts like RST 7.5, 6.5, 5.5 and INTR can be enabled and disabled, while the non-maskable TRAP interrupt cannot. Software interrupts use RST instructions to redirect execution to subroutines.
interrupts.ppt
The document discusses interrupts for the 8085 microprocessor. It describes how interrupts cause the processor to stop executing its current program and call an interrupt service routine (ISR) to service the interrupt event. Interrupts can be hardware interrupts from external signals or software interrupts from special instructions. Maskable interrupts can be delayed or rejected while non-maskable interrupts cannot. The 8085 has different interrupt types that are prioritized and either vectored or non-vectored to different memory locations to point to the ISR. The SIM and RIM instructions allow reading and modifying the interrupt mask to enable or disable specific interrupt sources.
Pin diagram-of-8085
The document describes the pin diagram and functions of the 8085 microprocessor. It has 40 pins and an 8-bit CPU. Pin 1-2 are for the crystal oscillator input. Pin 3 is the reset output and pin 36 is the reset input. Pin 4 is for serial input and pin 5 is for serial output. There are five hardware interrupts - TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. The status pins S0 and S1 and the IO/M pin indicate the current bus operation. Pins 12-19 are for the lower address/data bus and pins 21-28 are for the higher address bus. Pin 30 enables the address latch
Interrupt
The document discusses interrupts in the 8085 microprocessor. It describes how interrupts work, including the different types of interrupts, how the microprocessor responds to interrupts, and how interrupt service routines handle interrupts. It covers non-maskable interrupts, maskable interrupts, vectored and non-vectored interrupts, and how the 8085 prioritizes and processes multiple interrupts using its interrupt pins and vectors.
More Related Content
What's hot
Interrupt of 8085
The document discusses the interrupt system of the 8085 microprocessor. It describes hardware interrupts and software interrupts. There are 5 types of hardware interrupts - TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. Hardware interrupts are asynchronous and have lower priority than software interrupts. The 8 software interrupts are RST0-RST7. Software interrupts are synchronous and transfer program control to an interrupt service routine. The document also covers interrupt related instructions like EI, DI, SIM, and RIM.
1206 Interrupts Of 8085
The document discusses interrupts in the 8085 microprocessor. It describes interrupt types as maskable or non-maskable and explains the interrupt process where the processor pauses main program execution to service interrupt requests. It provides details on the interrupt vector table and using instructions like EI, SIM to enable interrupts and set the interrupt mask. An example is given of blinking an LED display using interrupt-based pattern changes.
8085 interrupts
The document discusses interrupts in the 8085 microprocessor. It describes how interrupts work, including the different types of interrupts, how interrupt requests are handled, and the interrupt acknowledge process. It also covers interrupt masking, vectored interrupts, and the interrupt structures in 8085 systems.
Interrupts of 8085
The document discusses interrupts in computers. It defines interrupts as events external to the currently executing process that cause process suspension so it can be resumed later. Interrupts allow I/O devices to get CPU attention asynchronously. The document contrasts interrupt handling with polling and describes hardware/software, masked/non-masked, and vectored/non-vectored interrupt types. It also explains interrupt processing, including interrupt acknowledgement and use of interrupt vectors and tables.
Presentation on Intel 8085 processor
The document discusses interrupt control and management in operating systems. It covers various topics related to interrupts in microprocessors like the 8085 including:
- Classification of interrupts as maskable or non-maskable, vectored or non-vectored.
- What happens when a microprocessor is interrupted and how it responds by jumping to an interrupt service routine.
- The different interrupts in the 8085 microprocessor including INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP.
- How to allow multiple devices to interrupt using priorities and a priority encoder.
- How the 8085 handles multiple interrupts and priorities between RST 5.5
Interrupt
Interrupt is a process that holds the microprocessor for a while and decide what will be next job that will done by the microprocesssor. Interrupt types ,SIM ,RIM ,DMA ,Maskable interrupt ,Non-Maskable interrupt,Trap,RST and many more has been discussed on this powerpoint . You will be able to know each of the interrupt and their functions from the slides ,some diagram that will help you to develop your knowledge about interrupt . Hardware interrupts are used by devices to communicate that they require attention from the operating system.Hardware interrupts are used by devices to communicate that they require attention from the operating system.Internally, hardware interrupts are implemented using electronic alerting signals that are sent to the processor from an external device, which is either a part of the computer itself, such as a disk controller, or an external peripheral. For example, pressing a key on the keyboard or moving the mouse triggers hardware interrupts that cause the processor to read the keystroke or mouse position.software interrupt is caused either by an exceptional condition in the processor itself, or a special instruction in the instruction set which causes an interrupt when it is executed. The former is often called a trap or exception and is used for errors or events occurring during program execution that are exceptional enough that they cannot be handled within the program itself. For example, a divide-by-zero exception will be thrown if the processor's arithmetic logic unit is commanded to divide a number by zero as this instruction is an error and impossible. The operating system will catch this exception, and can choose to abort the instruction. Software interrupt instructions can function similarly to subroutine calls and are used for a variety of purposes, such as to request services from device drivers, like interrupts sent to and from a disk controller to request reading or writing of data to and from the disk.
Types of Interrupts with details Mi ppt
The document discusses interrupts in microprocessors using the 8085 as an example. It defines interrupts as asynchronous signals from external devices that cause the microprocessor to suspend its current program and service the interrupt. Interrupts can be classified as maskable or non-maskable, and vectored or non-vectored. The 8085 has one non-maskable interrupt (TRAP) and four maskable interrupts - INTR, RST 5.5, RST 6.5, and RST 7.5. Maskable interrupts can be enabled or disabled using instructions while non-maskable interrupts always have priority. The document explains the interrupt handling process and priorities on the 8085 in detail.
Atv32 how to diagnose a saff fault
The document provides guidance on diagnosing SAFF (Safety Function Fault) errors on ATV32 variable speed drives. It discusses the evolution of safety features on ATV32 drives and gives tools and methods for determining the root cause of SAFF faults. These include checking safety fault registers accessible via the keypad, commissioning software, or a safety diagnostic tool. Examples are provided of using register values and fault histories to diagnose issues like internal communication interruptions, instability on the STO input, or problems with the safety configuration. Recommendations emphasize the need to check the drive version, fault conditions, and use measurement tools to fully understand the cause of any SAFF faults.
Playing with R L C Circuits
The document discusses building a function generator and oscilloscope to experiment with RLC circuits. It explains RLC basics like impedance and phase shifts. The RC circuit is analyzed in detail, showing the voltage and current relationships. Predictions are made for different RC combinations. Code for generating sine waves with a microcontroller is provided. Finally, frequency filters using RC circuits are discussed.
S emb t5-arch_io
This document discusses input/output (I/O) mechanisms for embedded systems, including I/O devices, serial communication, CPU interfaces, programming I/O, memory-mapped I/O for ARM and MSP430 architectures, and interrupt-driven I/O using polling, peek/poke, and interrupt service routines (ISRs). It also covers interrupt priorities and vectors, interrupt processing, and returning from interrupts specifically for the ARM and MSP430 processors.
Detection & counting of missing pulses with generation
This is a final year project of B.Tech. Here we generate a random pulse train with some missing pulse and detect the position of missing pulses. and with that we count the no of pulses in some equal time span and from there we count the number of missing pulses in the span of time.
8085 interrupts
The document discusses interrupts in microprocessors. It defines interrupts as signals initiated by external devices to get the processor's attention. When an interrupt occurs, the processor suspends the current program and jumps to an interrupt service routine (ISR) before returning to the main program. Interrupts can be classified as maskable, non-maskable, vectored, non-vectored, hardware, or software. The 8085 microprocessor has specific interrupt pins and instructions to manage interrupts.
Hardware-Assisted Rootkits & Instrumentation
Security researchers have limited options when it comes to debuggers and dynamic binary instrumentation tools for ARM-based devices. Hardware-based solutions can be expensive or destructive, while software tools are often restricted to user mode. Presented at REcon 2016, this presentation explores a common but often ignored feature of the ARM debug architecture in search of other options. Digging deeper into this hardware component reveals many interesting use-cases for researchers ranging from debugging and instrumentation to building a novel rootkit.
PowerMate15 Technical Specification
PowerMate15 is a digital switching solution developed for the transportation market. It provides in one package state of the art digital switching technology and easy to understand user interface for designers with an extensive and sophisticated menu of switching solutions.
Jtagppt
The document discusses JTAG (Joint Test Action Group), which defines a standard interface for debugging, programming, and testing microcontrollers and other components. JTAG enables components to be tested and programmed using a single connector and allows controlling the clock cycles of a microcontroller through software, enabling hardware breakpoints. It works by shifting test vectors into boundary scan registers connected to input/output pins to test connections between components.
SenseTek Stratos HSSD-2 installers handbook
www.sensetek.nl
Branddetectie | Aspiratiesystemen | Thermische kabelsystemen | Beamdetectie | Vlamdetectie | Vloeistofdetectie | Voedingen | Proefbrandmateriaal
At89c4051
The AT89C4051 is a low-voltage, high-performance CMOS 8-bit microcontroller with
4K bytes of Flash programmable and erasable read-only memory. The device is manufactured
using Atmel’s high-density nonvolatile memory technology and is
compatible with the industry-standard MCS-51 instruction set. By combining a versatile
8-bit CPU with Flash on a monolithic chip, the Atmel AT89C4051 is a powerful
microcontroller which provides a highly-flexible and cost-effective solution to many
embedded control applications.
The AT89C4051 provides the following standard features: 4K bytes of Flash,
128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five-vector, two-level interrupt
architecture, a full duplex serial port, a precision analog comparator, on-chip
oscillator and clock circuitry. In addition, the AT89C4051 is designed with static logic
for operation down to zero frequency and supports two software-selectable power
saving modes. The Idle Mode stops the CPU while allowing the RAM, timer/counters,
serial port and interrupt system to continue functioning. The power-down mode saves
the RAM contents but freezes the oscillator disabling all other chip functions until the
next hardware reset.
What's hot (17)
Detection & counting of missing pulses with generation
Detection & counting of missing pulses with generation
Similar to Interrupts
Microprocessor Architecture 4
8085 Microprocessor architecture ,Interrupt control-software interrupts ,Hardware Interrupts,Interrupt priorities are explained with examples.
Interrupts of microprocessor 8085
The document discusses interrupts in the 8085 microprocessor. It defines interrupts as a mechanism to suspend normal execution and service external devices or instructions. The 8085 has hardware and software interrupts. Hardware interrupts can be maskable or non-maskable. Maskable interrupts like RST 7.5, 6.5, 5.5 and INTR can be enabled and disabled, while the non-maskable TRAP interrupt cannot. Software interrupts use RST instructions to redirect execution to subroutines.
interrupts.ppt
The document discusses interrupts for the 8085 microprocessor. It describes how interrupts cause the processor to stop executing its current program and call an interrupt service routine (ISR) to service the interrupt event. Interrupts can be hardware interrupts from external signals or software interrupts from special instructions. Maskable interrupts can be delayed or rejected while non-maskable interrupts cannot. The 8085 has different interrupt types that are prioritized and either vectored or non-vectored to different memory locations to point to the ISR. The SIM and RIM instructions allow reading and modifying the interrupt mask to enable or disable specific interrupt sources.
Pin diagram-of-8085
The document describes the pin diagram and functions of the 8085 microprocessor. It has 40 pins and an 8-bit CPU. Pin 1-2 are for the crystal oscillator input. Pin 3 is the reset output and pin 36 is the reset input. Pin 4 is for serial input and pin 5 is for serial output. There are five hardware interrupts - TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR. The status pins S0 and S1 and the IO/M pin indicate the current bus operation. Pins 12-19 are for the lower address/data bus and pins 21-28 are for the higher address bus. Pin 30 enables the address latch
Interrupt
The document discusses interrupts in the 8085 microprocessor. It describes how interrupts work, including the different types of interrupts, how the microprocessor responds to interrupts, and how interrupt service routines handle interrupts. It covers non-maskable interrupts, maskable interrupts, vectored and non-vectored interrupts, and how the 8085 prioritizes and processes multiple interrupts using its interrupt pins and vectors.
EE8551 mpmc unit 1 module 3
EE8551 – MICROPROCESSOR AND MICROCONTROLLER UNIT – 1 INTRODUCTION OF 8085 Module 1: Introduction of 8085 Module 2: Architecture of & Pinout diagram 8085 Module 3: Interrupts Module 4: Data transfer Concepts Module 5: Timing Diagram Module 6: Memory Organization
Interrupt11
The document discusses interrupts in the 8085 microprocessor. It describes how interrupts work, including maskable vs non-maskable interrupts, vectored vs non-vectored interrupts. It provides details on the different interrupt pins on the 8085 including INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP. It explains how the 8085 handles interrupts through an interrupt acknowledge cycle, interrupt vectors, and interrupt service routines.
Microprocessor.pptx
The document describes the pinouts and signals of the 8085 microprocessor IC. It discusses the 7 groups of pins - address bus, data bus, control/status signals, power supply, clock signals, interrupts/external signals, and serial I/O signals. It also summarizes the 5 addressing modes of the 8085 - immediate, register, direct, indirect, and implied. Finally, it provides details about the different types of interrupts in the 8085 including TRAP, RST 7.5, RST 6.5, RST 5.5, and INTR interrupts and interrupt service routines.
MPMC_PPT.pptx
This document provides information about the EE8551 Microprocessor and Microcontrollers course taught by Dr. K. Sureshkumar. It includes definitions of basic concepts like bits, bytes and words. It describes the architecture of the 8085 microprocessor, including its features, pin configuration, generation of control signals, interrupts, and common instructions related to interrupts. The 8085 has an 8-bit ALU and accumulator, 8-bit registers, and supports interrupts from external devices. When an interrupt occurs, an interrupt service routine is executed to service the interrupting source.
8085 interrupts
The document discusses interrupts in microprocessors. It defines an interrupt as an external device getting the attention of the microprocessor. Interrupts can be classified as maskable or non-maskable, and vectored or non-vectored. When an interrupt occurs, the microprocessor suspends its current program and jumps to an interrupt service routine (ISR) to handle the interrupt. The 8085 microprocessor has 5 interrupt lines - INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP. INTR is the only non-vectored interrupt, while the others are vectored to known memory locations.
Chapter 4 - Interrupts of 8085
The document discusses interrupts in the 8085 microprocessor. It describes that interrupts allow external devices to get the processor's attention. The 8085 has maskable and non-maskable interrupts. It also has vectored interrupts where the service routine address is hardcoded, and non-vectored where the address must be provided. When an interrupt occurs, the processor suspends its current program and jumps to an interrupt service routine to handle the interrupt before returning to the original program.
Interrupts
The document discusses interrupts for the 8085 microprocessor. There are two types of interrupts - maskable and non-maskable. Maskable interrupts can be delayed or rejected using EI and DI instructions, while non-maskable interrupts cannot be delayed or rejected. Interrupts can also be classified as vectored or non-vectored depending on whether the address of the service routine is hardcoded or needs to be supplied externally. The 8085 has specific interrupt inputs including INTR, RST 5.5, RST 6.5, RST 7.5, and TRAP. These interrupts differ in terms of whether they are maskable or vectored. Instructions like SIM and RIM can be used to manipulate
Interrupts and types of interrupts
This method of checking the signal in the system for processing is called Polling Method. In this method, the problem is that the processor has to waste number of clock cycles just for checking the signal in the system, by this processor will become busy unnecessarily. If any signal came for the process, processor will take some time to process the signal due to the polling process in action. So system performance also will be degraded and response time of the system will also decrease.
Timing n interrupt.pptx
The document discusses timing and interrupts in microprocessors. It specifically focuses on the 8085 microprocessor. It describes the basic machine cycles of the 8085 including opcode fetch, memory read, memory write, I/O read, and I/O write cycles. It then discusses what interrupts are, the different interrupt pins on the 8085, the interrupt process, classifications of interrupts including maskable, non-maskable, and software interrupts. It covers interrupt priority and the priority of different interrupt types on the 8085.
B sc e5.2 mp unit 3 interfacing
The document discusses different methods of data transfer between a microprocessor and input/output devices. It describes programmed I/O, interrupt-driven I/O, and direct memory access (DMA) as common parallel data transfer schemes. For slower I/O devices, asynchronous or interrupt-driven methods are used to avoid wasted processor time waiting for the I/O device. Interrupt-driven I/O allows an I/O device to signal the processor when data is ready via an interrupt request, improving efficiency over programmed I/O.
Coa INTERUPT
The document discusses microprocessors and interrupts in computer systems. It describes how the first microprocessor was developed by Intel and Busicom in 1971. It then covers several Intel microprocessor models from the 4004 to the 8088 and beyond. The document also defines interrupts as signals that cause the CPU to pause its current task and service the interrupt. It distinguishes between maskable, non-maskable, software, and hardware interrupts and provides examples of each. Finally, it discusses the different software interrupts available in the 8085 microprocessor.
Microprocessor Part 4
The document discusses stack and subroutine operations, interrupts, and serial communication in 8085 microprocessors. It describes the LIFO structure of the stack and how it uses PUSH and POP instructions. It also explains subroutines using CALL and RET instructions. For interrupts, it covers maskable, non-maskable, vectored and non-vectored interrupts and their priorities. It provides details on interrupt handling instructions. Finally, it discusses serial input/output using SID and SOD pins and RIM/SIM instructions.
8051
The document discusses embedded systems and microcontrollers. It provides details about the 8051 and 8085 microcontrollers, including their architecture, pins, applications, addressing modes, and interrupts. The 8051 has features like 4KB ROM, 128B RAM, timers, serial port, I/O ports. Common applications include digital clocks and traffic lights. It uses addressing modes like immediate, register indirect, and direct. The 8085 is an 8-bit microprocessor with multiplexed address/data bus and works on a 5V supply.
Vino's 8086 interrupts
Interrupts are signals that cause the CPU to halt its current execution and transfer control to an interrupt service routine (ISR). There are three main types of interrupts: external hardware interrupts from devices, internal hardware interrupts from processor exceptions, and software interrupts generated by executing an instruction. Interrupts can also be classified as maskable or non-maskable, with non-maskable interrupts unable to be disabled. Hardware interrupts come from external signals to the NMI or INTR lines and cause the CPU to save its context before looking up and executing the appropriate ISR. Software interrupts are treated similarly but are generated internally and allow for system calls through numbered interrupts.
Introduction to Interrupts of 8085 microprocessor
The document discusses interrupts in microprocessors. It defines an interrupt as an asynchronous signal from an I/O device that gets the processor's attention. Interrupts can be maskable, which can be delayed, or non-maskable, which cannot. The 8085 interrupt controller supports 5 interrupt lines, including one non-maskable TRAP line. Interrupts are handled through an interrupt vector table that redirects the processor to interrupt service routines.
Similar to Interrupts (20)
More from Monica Sabharwal
Cg colg
The document presents information on different types of display devices including CRT, LCD, plasma display, and LED displays. It discusses the key components, working principles, and properties of CRT and flat panel displays such as LCD, plasma, and LED displays. Advantages and disadvantages of different display technologies are also highlighted.
2009 Punjab Technical University B.C.A Object Oriented Proagramming Language ...
This document outlines the structure and questions for an exam on Object Oriented Programming using C++. It is divided into two sections:
Section A contains 10 multiple choice questions covering topics like detecting end of file, if-else constructs, inline functions, stream classes, manipulators, and static variables.
Section B contains 4 longer answer questions asking about object oriented characteristics, user defined data types, constructors, inheritance, passing arguments by reference vs address, abstract base classes, and static vs runtime binding. Students must answer all of Section A and 4 of the 5 questions in Section B.
2009 Punjab Technical University B.C.A Microprocessor Question paper
The document is an exam for a course on microprocessors. It contains 20 short answer questions in Section A and 4 longer answer questions in Section B. The questions cover topics like the essential elements of a CPU, addressing modes, interrupts and interrupt service routines in 8086 processors, writing assembly language programs for 8086, the architecture of 8086 processors, flags in 8086, clock generators, interrupt controllers, and direct memory access controllers. The exam tests students' understanding of microprocessor concepts and the 8086 architecture.
2009 Punjab Technical University B.C.A Management Information System Question...
The document is an exam for a Management Information Systems course covering two sections. Section A contains 10 short answer questions about MIS concepts like objectives, organization roles, reports, information systems, subsystems, EDP, abstract vs physical systems, and tools. Section B contains 4 long answer questions asking about the role of computers in MIS, types of systems and their characteristics, decision support systems, and steps for analyzing and designing information systems. Students must answer all Section A questions and 4 out of 6 Section B questions.
2009 Punjab Technical University B.C.A OPERATING SYSTEM Question paper
The document contains an exam for an Operating Systems course, including:
1) A 10 question short answer section covering topics like the main functions of an OS, multiprogramming, threads, deadlocks, dynamic linking, paging, interrupts vs traps, system programs, and dispatchers.
2) A longer answer section with 4 questions, including questions on batch processing systems, scheduling queues/algorithms, analyzing turnaround and waiting times for different scheduling algorithms, the dining philosophers problem and deadlocks, page sizes and addresses, thrashing prevention, file operations, OS security threats, and data encryption.
The exam tests students' understanding of fundamental OS concepts through definitions, explanations of concepts, analyzing examples, and
2009 Punjab Technical University B.C.A Database Management System Question paper
This document outlines the structure and content of an exam for the Database Management System subject. [SECTION A] contains 10 short answer questions covering topics like physical database independence, database integrity, SQL, security, normalization, data types, schema architecture, relations, database administrator responsibilities, and concurrency. [SECTION B] contains 4 long answer questions asking students to compare data models, describe relational database design steps and pitfalls, explain the differences between relational algebra and calculus, discuss joins in DBMS with an example, explain the four forms of normalization with examples, and discuss distributed databases including the design steps.
Csa papers
The document is an exam for the subject of Computer System Architecture. It contains 10 short answer questions in Section A worth 2 marks each, totaling 20 marks. Section B contains 4 long answer questions worth 10 marks each, totaling 40 marks. The exam is worth a total of 60 marks and lasts 3 hours. Candidates are instructed to answer all of Section A and 4 questions from Section B. The document provides an overview of the exam structure and content areas that will be assessed, including topics like interrupts, addressing modes, pipelining, memory access instructions, I/O data transfer, and CPU control units.
More from Monica Sabharwal (7)
2009 Punjab Technical University B.C.A Object Oriented Proagramming Language ...
2009 Punjab Technical University B.C.A Object Oriented Proagramming Language ...
2009 Punjab Technical University B.C.A Microprocessor Question paper
2009 Punjab Technical University B.C.A Microprocessor Question paper
2009 Punjab Technical University B.C.A Management Information System Question...
2009 Punjab Technical University B.C.A Management Information System Question...
2009 Punjab Technical University B.C.A OPERATING SYSTEM Question paper
2009 Punjab Technical University B.C.A OPERATING SYSTEM Question paper
2009 Punjab Technical University B.C.A Database Management System Question paper
2009 Punjab Technical University B.C.A Database Management System Question paper
Interrupts
- 1. INTERRUPTS OF INTEL 8085
- 3. Steps whenever there is an interrupt? PC contents are stored in stack 100 101 102 103 104 103 STACK SP current PC 103
- 4. Interrupts in 8085 Main routine Interrupt Save program counter Disable interrupts Send out interupt acknowledge Service routine INTA Go to service routine Get original program counter Go back EI RET
- 10. 8085 Interrupts 8085 TRAP RST7.5 RST6.5 RST 5.5 INTR INTA
- 11. The addresses to which program control goes: Absolute address is calculated by multiplying the RST value with 0008H. NAME VECTOR ADDRESSES RST 7.5 003CH(7.5 X 0008H) RST 6.5 0034H(6.5 X 0008H) RST 5.5 002CH(5.5 X 0008H) TRAP 0024H(4.5 X 0008H)
- 13. The 8085 Interrupts Interrupt name Maskable Vectored INTR Yes No RST 5.5 Yes Yes RST 6.5 Yes Yes RST 7.5 Yes Yes TRAP No Yes
- 15. Edge triggering Rising edge Falling edge
- 17. Level triggering Low level High level
- 18. PRIORITY BASED INTERRUPTS INTERRUPT PRIORITY TRAP 1 RST 7.5 2 RST 6.5 3 RST 5.5 4 INTR 5
- 26. ANY QUERIES
- 28. THANK YOU