Al2ed chapter14

Protected-Mode Interrupt Processing Chapter 14 S. Dandamudi

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Interrupts vs. Procedures ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A Taxonomy of Pentium Interrupts

Protected Mode Interrupt Processing ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Protected Mode Interrupt Processing (cont’d) Organization of the IDT

Protected Mode Interrupt Processing (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Protected Mode Interrupt Processing (cont’d) Interrupt descriptor

Protected Mode Interrupt Processing (cont’d) Interrupt invocation

What Happens When An Interrupt Occurs? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Interrupt Enable Flag Instructions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Returning From An ISR ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exceptions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Faults and Traps ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dedicated Interrupts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dedicated Interrupts (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Dedicated Interrupts (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Software Interrupts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File I/O ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File I/O (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File I/O (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File System Calls ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File System Calls (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File System Calls (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File System Calls (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

File System Calls (cont’d) ,[object Object],[object Object],[object Object],[object Object],[object Object]

Illustrative Examples ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Hardware Interrupts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How Are Hardware Interrupts Triggered? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How Does the CPU Know the Interrupt Type? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How can More Than One Device Interrupt? ,[object Object],[object Object],[object Object],[object Object],Last slide

Al2ed chapter14

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Al2ed chapter14