PC assembly language

PC assembly language The purpose of this book is to give the reader a better understanding of how computers really work at a lower level than in programming languages like Pascal. By gaining a deeper understanding of how computers work, the reader can often be much more productive developing software in higher level languages such as C and C++. Learning to program in assembly language is an excellent way to achieve this goal. Other PC assembly language books still teach how to program the 8086 processor that the original PC used in 1980! The 8086 processor only supported real mode. In this mode, any program may address any memory or device in the computer. This mode is not suitable for a secure, multitasking operating system. This book instead discusses how to program the 80386 and later processors in protected mode (the mode that Windows and Linux runs in). This mode supports the features that modern operating systems expect, such as virtual memory and memory protection. There are several reasons to use protected mode:1. It is easier to program in protected mode than in the 8086 real mode that other books use.2. All modern PC operating systems run in protected mode.3. There is free software available that runs in this mode.The lack of textbooks for protected mode PC assembly programming is the main reason that the author wrote this book.

Authors: Carter P.A.Pages: 178     Year: 2002

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