Computer Science - Computer Fundamentals - Discussion

When a processor is interrupted, control is transferred to a special section of code designed to handle that interrupt.

This section is commonly referred to as an Interrupt Service Routine (ISR) or Interrupt Handler.

In many systems, this is triggered via a Supervisor Call (SVC) instruction or trap, which shifts control to the operating system or interrupt vector.

The ISR code performs the necessary actions to handle the interrupt.

ISR is stored in memory (M)

Interrupt Service Routine (ISR).

A section of code to which control is transferred when a processor is interrupted is known as an Interrupt Service Routine (ISR). The processor executes the ISR and returns to the next instruction of the main program.

Memory --> M.

M- Memory.

What is meant by M?

Definition of SVC.

1) (Switched Virtual Circuit) A network connection that is established at the time the transmission is required and disconnected when the session is completed. SVCs are normally implemented in connection-oriented systems such as the analog telephone network and ATM networks. Contrast with PVC.

2) (Scalable Video Coding) An extension to the Advanced Video Coding (AVC) standard to accommodate rendering devices with different processing capabilities and/or degraded transmission paths. SVC allows low-resolution formats to travel as subsets alongside the high-resolution video. The subsets may eliminate frames or contain reduced frame sizes or both. Rather than display high-resolution video poorly, SVC enables lesser-quality video to flow smoothly on low-bandwidth devices and channels.

3) (SuperVisor Call) A mainframe instruction that passes control to the operating system.

SVC : Supervisor Call.

Can you give the correct answer about the full form of SVC?

What is the meaning of "M"?