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| | Machine code - Wikipedia, the free encyclopedia |
 | | Machine code or machine language is a system of instructions and data directly understandable by a computer's central processing unit. | | | Humans use mnemonic codes to refer to machine code instructions. | | | Such a more readable rendition of the machine language is called an assembly language and consists of both binary numbers and simple words whereas machine code is composed only of the two binary digits 0 and 1. |
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http://en.wikipedia.org/wiki/Machine_language
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| | machine code - a Whatis.com definition |
| | Machine code is the elemental language of computers, consisting of a stream of 0's and 1's. | | | This machine code is stored as an executable file until someone tells the computer's operating system to run it. | | | Ultimately, the output of any programming language analysis and processing is machine code. |
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http://searchsmb.techtarget.com/sDefinition/0,,sid44_gci212507,00.html
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| | The Nonowt eZine X - First Steps in Machine Code - Part 1 - Basic Concepts |
| | It is this chip that manipulates machine code instructions to operate the computer. | | | Machine code is a series of numbers stored in the computer's memory; these numbers need to be kept in a safe place where they can remain undisturbed by the invisible workings of BASIC. | | | This is one of the main frustrations of machine code, for if you make the slightest error, a 'crash' is likely, which means you lose everything you placed into the computer. |
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http://www.nonowt.com/magfold/mcodefol/mcode1.html
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| | P-Code machine - Wikipedia, the free encyclopedia |
| | The p-Code machine or pseudo-code machine was the target of some early Pascal implementations, where the program was translated to p-code instructions, rather than to machine code instructions (understandable directly by a processor). | | | In computer programming, a virtual machine executing p-code. | | | A p-code is similar to a byte-code but a p-code works at a higher level. |
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http://en.wikipedia.org/wiki/P-code_machine
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| | Machine Code Instructions |
| | Each machine code instruction is chosen to be a multiple of 8, since that is how memory is stored. | | | The register field is always first in the machine code instruction, so there is a bit to indicate if the register field is the source or the destination of the operation. | | | Here is a simplified account of machine code instructions for the 8088. |
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http://www.cs.fiu.edu/~downeyt/machine.htm
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| | Encyclopedia article on Machine code monitor [EncycloZine] |
| | A machine code monitor (aka machine language monitor) is software built-into or separately available for various computers, allowing the user to enter commands to view and change the memory of the machine, with options to load and save memory contents from/to secondary storage. | | | Machine code monitors became something of a mass software product in the home computer era of the late 1970s and into the 1980s. | | | It was not unheard of to do all of one's programming with a monitor (indeed, in the first years of home computing, many people made do with |
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http://encyclozine.com/Machine_code_monitor
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| | Sinclair User 38 - Machine Code |
| | That, however, is not very convenient for the machine code programmer, so assembly language uses a program in the computer to convert three- or four- letter codes into the machine code numbers. | | | The difficulty with learning machine code is that it is easy enough to learn the instructions, but knowing what to do with them can be quite a problem. | | | Most of the load instructions supported in Z80 machine code are given in figure six. |
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http://www.sincuser.f9.co.uk/038/mcode.htm
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| | Translating Assembly Code to Machine Code |
| | Converting Assembly Language Instructions to Machine Code, from The 8088 and 8086 Microprocessors. | | | The OPCODE is the machine instruction code (6-bits) for the specified instruction. | | | Given a machine language instruction be able to determine what the assembler form of the instruction is. |
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http://www2.hawaii.edu/~sdunan/ics312/outlines/topic18/mach_lang.html
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| | The GHC Commentary - The Native Code Generator |
| | Maximal munch is a greedy algorithm and is known not to give globally optimal code sequences, but it is good enough, and fast and simple. | | | Needed dependencies are knowledge of word size and endianness, used when generating code to do deal with half-word fields in info tables. | | | The aim here was to generate working 64 bit code as simply as possible. |
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http://www.cse.unsw.edu.au/~chak/haskell/ghc/comm/the-beast/ncg.html
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| | The New Jersey Machine-Code Toolkit |
| | For example, 486 instructions are recognized by hand-written C code, but MIPS instructions are recognized by selecting a mask and a sample from a table, applying the mask to the word in question, then comparing the result against the sample. | | | Applications that work on object code are more widely useful than those that require assembly code or source code, because they can be used on any executable file. | | | Our model of machine instructions makes several machine-level concepts general enough that they can be specified or implemented in a machine-independent way, including conditional assembly, span-dependent instructions, relocatable addresses, segments, object code, and relocation. |
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http://www.eecs.harvard.edu/~nr/pubs/tk-usenix.html
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| | VM Spec The Java Virtual Machine Instruction Set |
| | A Java virtual machine instruction consists of an opcode specifying the operation to be performed, followed by zero or more operands embodying values to be operated upon. | | | A Java virtual machine implementation throws an object that is an instance of a subclass of the class | | | Java virtual machine instructions are represented in this chapter by entries of the form shown in Figure 6.1, in alphabetical order and each beginning on a new page. |
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http://java.sun.com/docs/books/vmspec/2nd-edition/html/Instructions.doc.html
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| | LMI K-Machine |
| | We therefore designed the machine to optimize the patters of usage found in code written by non-expert users. | | | Thus, when the condition codes are generated by the ALU, the conditional branch is in the instruction register and the machine can then decide whether to follow the branch at this point. | | | Analysis of the storage on existing Lisp Machines indicated that only about 20 percent of the storage was actually stored in lists (the rest being vectors, structures, or classes), and that about 20 percent of the lists benefited from CDR codes. |
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http://home.comcast.net/~prunesquallor/kmachine.htm
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| | Machine Code |
| | A machine instruction consists of fields that specify a machine operation and other fields that designate the data. | | | ere is the machine instruction again, but the pattern that specifies the destination is blank. | | | Each field of a machine instruction has a specific function. |
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http://chortle.ccsu.ctstateu.edu/AssemblyTutorial/Chapter-10/ass10_6.html
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| | Threaded Code |
| | This is known as subroutine-threaded code, although it is not threaded code in the original sense; in fact, subroutine threading is not even an interpretive technique. | | | The {\em dynamic method} is based on having, for every possible state of the cache, one specialized version of the whole interpreter; the execution of an instruction usually changes the state of the cache and the next instruction is executed in the version corresponding to the new state. | | | Each word (a generalization of the virtual machine instruction) has a code field and a parameter field. |
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http://www.complang.tuwien.ac.at/forth/threaded-code.html
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| | Jefferson Computer Museum - UCSD P-System Museum |
| | In theory, a P-System executable program was portable between machines with different processors because the program was not expressed in machine-dependent assembly code but instead the "p-code" machine language of a virtual computer. | | | Like today's Java, it was based on a "virtual machine" with a standard set of low-level, machine-language-like "p-code" instructions that were emulated on different hardware, including the 6502, the 8080, the Z-80, and the PDP-11. | | | It is available in C source code form and is easily recompiled for Unix and Linux systems. |
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http://www.threedee.com/jcm/psystem
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| | The Old New Thing : Advantages of knowing your x86 machine code |
| | And trying to match optimized code to the source code is anything but fun, sometimes you are better by ignoring source code and working with machine code only instead. | | | Personally, I don't remember the machine code for these instructions so I tend to rewrite the CALL instruction so it calls the "RETD" at the end of the function. | | | N.B.: Debugging optimized code is hard, but there's no reason a debugger can't do it "sufficiently" well, giving the developer the advantage of source code and low level information. |
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http://blogs.msdn.com/oldnewthing/archive/2004/11/11/255800.aspx
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| | CAIDA Analysis of Code-Red - CAIDA : ANALYSIS : security : code-red |
| | The bias towards the local /16 and /8 networks means that an infected machine may be more likely to probe a susceptible machine, based on the supposition that machines on a single network are more likely to be running the same software as machines on unrelated IP addresses. | | | However, the backdoor installed on the machine allows any code to be executed, so the machines could be used as zombies for future attacks (DoS or otherwise). | | | If so, the worm generates a random list of IP addresses and probes each machine on the list in an attempt to infect as many computers as possible. |
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http://www.caida.org/analysis/security/code-red
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| | Program Transformation Wiki / Machine Code Decompilers |
| | The generated source code might not resemble the original at all. | | | This approach analyses the semantics of the executable, and from this derives an equivalent source file, without making use of knowledge about which compiler was used to generate the executable. | | | Qantel: There was another commercial decompiler in the mid-1980's written exclusively to decompile Qantel mini-computer machine code into Qantel's proprietary QicBasic. |
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http://www.program-transformation.org/Transform/MachineCodeDecompilers
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| | An abstract machine for memory-safe DEC Alpha machine code |
| | An abstract machine for memory-safe DEC Alpha machine code | | | Because the experiments in this paper use the DEC Alpha assembly language, our abstract machine is essentially a high-level formal description of the Alpha architecture [19]. | | | To define how programs are executed, we define an abstract machine as a state-transition function, the essential core of which is shown in Figure 3. |
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http://www.cs.cmu.edu/~petel/papers/pcc/osdi/node4.html
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| | BASIC & Machine Code |
| | I program in machine code because there is nothing more efficient, and because, given a rival program, coded in a high level language, you can always better them. | | | You may think you are writing in a highly structured language, or an object oriented language, but in the end, the machine code the compiler produces will still be the same old mess of GOTO (jmp) statements that we were all told not to do when we learnt to program. | | | Ok, a compiler that actually checked every possible method of coding a high level subroutine, might, might just come up with a better version, just as Deeper Blue, finally managed to out compute Kasparov with shear brute force and ignorance (Oh, and a bit of reprogramming halfway through I understand!). |
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http://www.users.globalnet.co.uk/~jchap/tvprowh.htm
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| | Sygel |
| | The Wonder Machine is a code generation engine that takes the repetitiveness out of J2EE software engineering, and leverages the best-of breed J2EE architecture in a fast, smooth and iterative process. | | | Simplify development by focusing on the "real" business logic and using the intelligent code generation algorithm of the Sygel Wonder Machine. | | | The "Wonder Machine Enterprise Edition" (WMEE), Sygel's main product, is the result of over ten years of Object Oriented development experience, and more cumbersome projects than we care to remember. |
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http://www.sygel.com
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| | Boomerang Decompiler |
| | This project is an attempt to develop a real decompiler for machine code programs through the open source community. | | | The horrible old switch code is gone, replaced by a propagation-based algorithm. | | | The new algorithm doesn't handle as many odd cases as the old code did, but it works for most cases, and is at least maintainable. |
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http://boomerang.sourceforge.net
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| | The Java HotSpot Virtual Machine, v1.4.1 |
| | A subtle but important benefit of this approach is that by delaying compilation until after the code has already been executed for a while (measured in machine time, not user time), information can be gathered on the way the code is used, and then utilized to perform more intelligent optimization. | | | The final phase does peephole optimization on the LIR and generates machine code from it. | | | Inlining is synergistic with other code optimizations, because it makes them more effective. |
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http://java.sun.com/products/hotspot/docs/whitepaper/Java_Hotspot_v1.4.1/Java_HSpot_WP_v1.4.1_1002_4.html
(1357 words)
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| | Chapter 7. Debugging Machine Language Code |
| | You set breakpoints at the machine code level using the | | | Inspects the value at every machine instruction within a given procedure and stops if the value has changed. | | | Depending on the format you specify, you can display the values as numbers, characters, or disassembled machine code. |
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http://techpubs.sgi.com/library/dynaweb_docs/0530/SGI_Developer/books/dbx/sgi_html/ch07.html
(2035 words)
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| | Copyright, Machine Code, and Compilers |
| | Franklin Computer Corp. the Third Circuit held--without really considering the issue--back in 1983 that object code as well as source code is entitled to copyright protection. | | | It is now well settled that the literal elements of computer programs, i.e., their source and object codes, are the subject of copyright protection. | | | If a version of a computer program contains no original expression then the text of that version clearly is not copyrightable. |
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http://samsara.law.cwru.edu/blog/archive3/Copyright_Machine_Code_Comp.html
(702 words)
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| | Morse Code Teaching Machine |
| | I programmed it for a handful of machines: the MITS Altair, the Wintek control module and a HAL Communications board we got donated to the ham club. | | | This was quite a job because the letter and number error rates took up over half of the 64 bytes of memory available in the part. | | | But I haven't got so much time, what with school and all this computer stuff I was learning. |
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http://c2.com/~ward/morse/morse.html
(1569 words)
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| | Machine Code |
| | To execute this code with data initialized to 10 null 16-bit words, we use | | | In both cases, the code should be a subroutine and end with | | | This chapter describes the functions which permit LyME to call arbitrary machine code. |
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http://www.calerga.com/doc/LME_P_bd.htm
(791 words)
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| | Converting Python Virtual Machine Code to C |
| | This may not be the best strategy, since it can result in reams of C code being output; this time-space tradeoff has been noted in similar projects [14]. | | | Using Python's profiler, I was able to identify ``hot spots'' in the program where the majority of time was being spent; changing that code to use more efficient data structures and cache previously-computed information sped the program up substantially. | | | This argument might also be reasonably extended to discourage ``micro-optimizations'' in the PVM instruction-fetching code. |
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http://www.foretec.com/python/workshops/1998-11/proceedings/papers/aycock-211/aycock211.html
(2780 words)
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| | Wiki: Welcome Visitors |
| | This is the easiest way to learn code because the computer thinks about the practice you need next instead of wasting your time with stuff you already know or confusing you with stuff that you don't. | | | This program was originally written in assembly language for the microprocessors used in the first Personal Computers. | | | This required hand translation of every program instruction. |
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http://c2.com/morse
(254 words)
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| | IBM Machine Warranties: FAQ |
| | What are my options if I want Machine operating system or application software support? | | | What is the purpose of the IBM Machine warranty? | | | What is the warranty on IBM features, conversions and upgrades to the IBM Machine? |
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http://www-1.ibm.com/servers/support/machine_warranties/faq.html
(220 words)
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| | Dictionary of Computers - machine code |
| | Microprocessors (CPUs based on a single integrated circuit) may be classified according to the number of machine-code instructions that they are capable of obeying: CISC (complex instruction set computer) microprocessors support up to 200 instructions, whereas RISC (reduced instruction set computer) microprocessors support far fewer instructions but execute programs more rapidly. | | | A set of instructions that a computer's central processing unit (CPU) can understand and obey directly, without any translation. | | | Because machine-code programs consist entirely of binary digits (bits), most programmers write their programs in an easy-to-use |
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http://www.tiscali.co.uk/reference/dictionaries/computers/data/m0005832.html
(201 words)
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| | IBM Machine Warranties & License Information |
| | Your rights and IBM's obligations regarding IBM Machine warranties are governed solely by the IBM Statement of Limited Warranty that ships with your Machine or the IBM agreement under which you acquired your Machine. | | | This site provides an overview of IBM's Limited Warranty for Machines and license agreements applicable to IBM machines. | | | Please note this overview is provided for informational purposes only. |
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http://www-1.ibm.com/servers/support/machine_warranties
(398 words)
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| | x86 Machine Code |
| | All PC files (whether stored on disk or being used in Memory) are Binary, but Assembly programmers use Hexadecimal rather than Binary for most of their work; thus the phrase Hex Editor. | | | Next time you want to write some ASM code, try searching through Ralf's INT List for all the details of what must be included for a particular INT function. | | | The Disassembler understands any x86 instructions up to and including Pentium II (with MMX and FPU too) plus other features. |
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http://www.geocities.com/thestarman3/asm
(803 words)
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| | Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations |
| | Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link. | | | Energy Citations Database (ECD) Document #6505824 - Machine code optimization |
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http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=6505824
(72 words)
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| | Machine-Dependent Code |
| | interfaces the kernel's machine-independent virtual memory code with the machine's memory mapping facilities. | | | The former is shared among the ports, is entirely in C, and contains the algorithms and data structures that do not depend on the architecture on which the kernel is running. | | | The kernel is divided into two major parts: the machine-independent code and the machine-dependent code. |
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http://www.teamten.com/lawrence/291.paper/node11.html
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| | Compiling Machine Code with GCJ |
| | Getting started with GCJ isn't an easy task right now because it is still in development, but the latest source codes are available from ftp://gcc.gnu.org/pub/gcc/releases/index.html. | | | You can compile either Java source code files or Java bytecode files to native code, but when you link the object files, you need to specify which class contains the program's main entry point. | | | The GNU Compiler for Java allows you to compile Java source to bytecode or machine code, and Java bytecode to machine code. |
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http://www.devx.com/getHelpOn/10MinuteSolution/20430
(640 words)
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| | MSN Encarta - Dictionary - machine code definition |
| | Search for "machine code" in all of MSN Encarta | | | MSN Encarta - Dictionary - machine code definition | | | Click here to search all of MSN Encarta |
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http://encarta.msn.com/encnet/features/dictionary/DictionaryResults.aspx?refid=1861693179
(56 words)
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| | CNC Machine Language: G-Code List |
| | G-Code is the most popular programming language used for programming CNC machinery. | | | G-Code is one of a number of computer code languages that are used to instruct CNC machining devices what motions they need to perform such as work coordinates, canned cycles, and multiple repetitive cycles. | | | Industry has standardized on G-Code as its basic set of CNC machine codes. |
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http://www.teskolaser.com/gcode_list.html
(155 words)
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| | What is machine code? - A Word Definition From the Webopedia Computer Dictionary |
| | You are in the: Small Business Computing Channel | | | Siemens Industrial Automation: Bar Code Printers - PROFINET offers decentralized IO, peer-to-peer communications, data visibility, machine safety, and motion control on one Industrial Ethernet network. | | | POSGuys.com: Bar Code Printers - Barcode Superstore provides wholesales pricing on barcode and POS equipment including barcode printers, barcode scanners, cash drawers and software. |
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http://www.webopedia.com/TERM/M/machine_code.html
(220 words)
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| | Machine code - Simple English Wikipedia |
| | Machine code, also called machine language, are 1s and 0s which we put into a microprocessor or CPU to tell it what to do. | | | Different combinations of 1s and 0s tell the microprocessor to do different things. |
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http://simple.wikipedia.org/wiki/Machine_code
(90 words)
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| | Java Code -> Native Machine Code - Dev Shed |
| | Java Code -> Native Machine Code - Dev Shed | | | What is the best compiler to use to compile Java code into an.exe, native machine code, program? | | | Discuss Java Code -> Native Machine Code in the Java Help forum on Dev Shed. |
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http://forums.devshed.com/java-help-9/java-code-native-machine-code-290178.html
(493 words)
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| | Flash Slot Machine Source Code |
| | Flash Slot Machine Source Code - Drug InfoNet - Coughing - [general] | | | Although since I have made everyone in this house miserable for weeks now, and it has been pointed out to me several times, I am trying harder to remove myself before I scream and start things. |
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http://dastyhov.tripod.com/flash-slot-machine-source-code.html
(714 words)
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