March 2016
Beginner
824 pages
22h 48m
English
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CHAPTER 5
Assembly Language
TABLE OF CONTENTS
5.2 Immediate Addressing and the Trap Instructions
5.4 Translating from Level HOL6
The Level-ISA3 language is machine language, sequences of 1’s and 0’s sometimes abbreviated to hexadecimal. Computer pioneers had to program in machine language, but they soon revolted against such an indignity. Memorizing the opcodes of the machine and having to continually refer to ASCII charts and hexadecimal tables to get their programs into binary was no fun. The assembly level was invented to relieve programmers of the tedium of programming in binary.
The assembly level uses the operating system below it.
Chapter 4 describes the Pep/9 ...
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