MacHine Code

MacHine Code

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 44. Chapters: Firmware, Microcode, SEX, Control store, Operand, Addressing mode, ROM image, Code injection, Nintendo DS homebrew, MikroSim, Interrupts in 65xx processors, SamyGO, CPUID, DIGIC, RouterTech, NOP, Code generation, Halt and Catch Fire, MLX, System Reference Manual, Opcode, Illegal opcode, Flashrom, Indirect branch, HLT, Simple Firmware Interface, PALcode, Client Initiated Remote Access, Common Firmware Environment, Run-Time Abstraction Services. Excerpt: Addressing modes are an aspect of the instruction set architecture in most central processing unit (CPU) designs. The various addressing modes that are defined in a given instruction set architecture define how machine language instructions in that architecture identify the operand (or operands) of each instruction. An addressing mode specifies how to calculate the effective memory address of an operand by using information held in registers and/or constants contained within a machine instruction or elsewhere. In computer programming, addressing modes are primarily of interest to compiler writers and to those who write code directly in assembly language. Note that there is no generally accepted way of naming the various addressing modes. In particular, different authors and computer manufacturers may give different names to the same addressing mode, or the same names to different addressing modes. Furthermore, an addressing mode which, in one given architecture, is treated as a single addressing mode may represent functionality that, in another architecture, is covered by two or more addressing modes. For example, some complex instruction set computer (CISC) computer architectures, such as the Digital Equipment Corporation (DEC) VAX, treat registers and literal/immediate constants as just another addressing mode. Others, such as the IBM System/390 and most reduced ins...Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.

Title:MacHine Code
Author: LLC Books
Publisher:General Books - 2010-08-20

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