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The interrupt request lines on the 8085 (INTR, RST7.5, RST6.5, and RST5.5) can be disabled using the DI (Disable Interrupt) instruction. You re-enable with the EI instruction. Also, RST7.5, RST6.5, and RST5.5 can be individually enabled and disabled using the SIM (Set Interrupt Mask) and RIM (Read Interrupt Mask) instructions. The TRAP interrupt request line cannot be disabled.
What else can I help you with?
What is interrpt request lines?
these are the block of code which tell the OS that a specific interrupt has arrived or to send interrupt request to some particular task. Interrupt is to stop the normal execution of the program and process the interrupt first according to it's priority in the interrupt vector table.
How many interrupt lines does 8086 have?
8086 have 5 interrupt lines.
What is the difference between polling and vector interrupt system?
In a computer, a vectored interrupt is an I/O interrupt that tells the part of the computer that handles I/O interrupts at the hardware level that a request for attention from an I/O device has been received and also identifies the device that sent the request. A vectored interrupt is an alternative to a polled interrupt , which requires that the interrupt handler poll or send a signal to each device in turn in order to find out which one sent the interrupt request.
How input device transfers data to the CPU?
Every input device attached to the motherboard bus lines has a direct line of communication with the CPU. These lines are known as interrupt request lines (IRQs) which can be prioritised. By signalling the CPU that an input is pending, the CPU can alert the operating system to deal with the request, which will then be prioritised accordingly.
What is an interrupt?
interrupt is a disturbance ,and request to do various jobs unusually while executed to be in current process in a system
What is the full form of IRQ and its function?
Interrupt Request
What is irq3?
Interrupt Request - IRQ0 through IRQ7 commonly.Interrupts are a commonly used technique for computer multitasking, especially in real-time computing. Such a system is said to be interrupt-driven.An act of interrupting is referred to as an interrupt request (IRQ)
What does IRQ stand for?
Abbreviation of interrupt request line, and pronounced I-R-Q. IRQs are hardware lines over which devices can send interrupt signals to the microprocessor. When you add a new device to a PC, you sometimes need to set its IRQ number by setting a DIP switch. This specifies which interrupt line the device may use. IRQ conflicts used to be a common problem when adding expansion boards, but the Plug-and-Play specification has removed this headache in most cases.see: http://www.webopedia.com/TERM/I/IRQ.html
What thing indicate a hardware conflict?
Received when two devices were trying to use the same interrupt request (or IRQ) to signal an interrupt to the Programmable Interrupt Controller (PIC).
Why used interrupts?
An interrupt is a signal from hardware (h/w interrupt) or software (s/w interrupt) to indicate the occurence of an event. It indicates the need of a change in execution. Interrupt handling or servicing of the interrupts depends upon the design of the operating system. A routine which will be called for servicing the interrupt is known as interrupt service routine or ISR and the request for the ISR through an interrupt is known as interrupt request or IRQ. Interrupt is a mechanism used for implementing the multitasking concept. It will use the concept of context switching, for servicing the request.
What is irq3 used for?
IRQ Interrupt Request 3 are usually reserved for COM port (1,2,3,4) but can be assigned to anything.Interrupts are a commonly used technique for computer multitasking, especially in real-time computing. Such a system is said to be interrupt-driven.An act of interrupting is referred to as an interrupt request (IRQ
What is a communications line between a device and the processor?
I believe it is interrupt request line.
