## Explain processing of an interrupt, Computer Engineering

Assignment Help:

Q. Explain Processing of an Interrupt?

The interrupt is processed as:

Step 1:Number field in INT instruction is multiplied by 4 to get its entry in interrupt vector table. For instance the IVT entry for instruction INT 10h willbe found at IVT at an address 40h. In the same way entry of INT 3h will be placed at 0Ch.

Step 2: CPU locates interrupt servicing routine (ISR) whose address is storedat IVT entry of interrupt. For instance in the figure above ISR of INT10h is stored at location at a segment address F000h and an offset F065h.

Step 3: CPU loads IP CS register and IP register with this new address in IVT and transfers control to that address same as a far CALL.

Step 4: IRET (interrupt return) causes program to recommence execution at the subsequent instruction in calling program.

#### What is secondary list, What is secondary list? It permits you to enha...

What is secondary list? It permits you to enhance the information presented in the basic list.  The user can, for example, select a line of the basic list for which he require

#### What are grouping notations, What are Grouping Notations These notat...

What are Grouping Notations These notations are boxes into which a model could be decomposed. Their elements includes of packages, frameworks and subsystems.

#### What is the difference among conventional and HD T.V, a. Write down the sal...

a. Write down the salient difference among conventional T.V. and High Definition TV (HDTV) and also highlight the various benefits of digital representation for video. b. Video

#### Computer Architecture, zero, one, two three address instructions

zero, one, two three address instructions

#### Cardinality ratio.., what is cardinality ratio?

what is cardinality ratio?

#### Determine the framed data including a parity bit, Determine the Framed data...

Determine the Framed data including a parity bit   For illustration when even parity is chosen, parity bit is transmitted with a value of 0 if the number of preceding

#### What are modes of operation of centralized spc, What are modes of operation...

What are modes of operation of centralized SPC? In about all the present day electronic switching systems utilizing centralized control, only a two-processor configuration is

#### What are the steps to design algorithm, What are the steps to design algori...

What are the steps to design algorithm? Formulate algorithm for each operation. Analysis specification tells what the operation does. The algorithm shows how it is done. The st

#### OS, why we say OS is a resource allocator and control program

why we say OS is a resource allocator and control program