January 2004
Intermediate to advanced
432 pages
11h 1m
English
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Interruptions
Normally, the system executes instructions sequentially, one after the next, unless it hits a BRANCH instruction. The BRANCH instruction is covered in Chapter 2 when we talk about procedure calling conventions. The other time the system will interrupt the normal flow of processing is in the case of an interruption. An example might be an I/O card signaling that a transfer is complete or a page fault due to a page not being present in memory.
Interruptions are categorized into four classes:
A fault happens when the system cannot execute the current instruction due to a temporary problem, such as a page being unavailable. The instruction will usually be restarted after the condition is corrected.
A trap happens when the current instruction ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.