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Programming virtual machine
programming, a P-code machine (portable code machine) is a virtual machine designed to execute P-code, the assembly language or machine code of a hypothetical
P-code_machine
Instructions directly executable by a computer
language that they interpret into a virtual machine code (bytecode) and process it with a P-code machine. A machine-code instruction causes the CPU to perform
Machine_code
Instruction set designed to be run by a software interpreter
the same code to run cross-platform, on different devices. Bytecode may often be either directly executed on a virtual machine (a p-code machine, i.e.,
Bytecode
Topics referred to by the same term
Look up p-code in Wiktionary, the free dictionary. P-code is an alternative term for bytecode, machine-independent code that achieves independence by
P-Code_(disambiguation)
American computer scientist
scientist who designed the NCR Corporation version of the p-code machine, which is a kind of stack machine popular in the 1970s as the preferred way to implement
Joel_McCormack
Software that emulates an entire computer
in which it was termed p-code and the resulting machine as a p-code machine. This has been influential, and virtual machines in this sense have been
Virtual_machine
Software that was popular during the home computer era of the 1970s and 1980s
A machine code monitor (a.k.a. machine language monitor) is software that allows a user to enter commands to view and change memory locations on a computer
Machine_code_monitor
Human-readable instructions for a computer
computer-consumable form such as via a compiler. Sometimes, code is compiled directly to machine code so that it can be run in the native language of the computer
Source_code
Virtual machine for interactive fiction games
adventure games. Infocom compiled game code to files containing Z-machine instructions (called story files or Z-code files) and could therefore port its
Z-machine
Low-level programming language family
computing, assembly language (alternatively assembler language or symbolic machine code), often referred to simply as assembly and commonly abbreviated as ASM
Assembly_language
Type of computer
so a rich set of operations can be computed. In stack machine code (sometimes called p-code), instructions will frequently have only an opcode commanding
Stack_machine
German cipher machine during World War II
extended ed.). Berlin: Springer. p. 133. ISBN 978-3-540-24502-5. OCLC 255507974. van Vark, Tatjana The coding machine Bauer, F. L. (2000). Decrypted Secrets
Enigma_machine
1977 programming language implementation
versions of UCSD p-code engine, each with several revisions of the p-System and UCSD Pascal. A revision of the p-code engine (i.e., the p-Machine) meant a change
UCSD_Pascal
Data structure or code used by a compiler
representation (IR) is the data structure or code used internally by a compiler or virtual machine to represent source code. An IR is designed to be conducive to
Intermediate_representation
Type of two-dimensional barcode
image. Whereas a barcode is a machine-readable optical image that contains information specific to the labeled item, the QR code contains the data for a locator
QR_code
Process to create executable computer programs
programming languages that are more easily intelligible to humans than machine code, which is directly executed by the central processing unit. Proficient
Computer_programming
Area codes in southern Florida
area codes List of North American Numbering Plan area codes "NANP Area Code History: 1948–1959" Archived February 6, 2005, at the Wayback Machine. Retrieved
Area_codes_305,_786,_and_645
Model that describes the programmable interface of a computer processor
running the same machine code, so that a lower-performance, lower-cost machine can be replaced with a higher-cost, higher-performance machine without having
Instruction_set_architecture
Computer system that provides behavior needed by running code
limit, the runtime system may provide services such as a P-code machine or virtual machine, that hide even the processor's instruction set. This is the
Runtime_system
Software that translates code from one programming language to another
source code from a high-level programming language to a low-level programming language (e.g., assembly language, object code, or machine code) to create
Compiler
Programming language used in CNC and 3D printing
automated machine tools, as well as for 3D-printer slicer applications. G-code has many variants. G-code instructions are provided to a machine controller
G-code
Sequence of statements or instructions in a computer language
usually a machine code language (i.e., binary) or an intermediate language such as register transfer language (RTL). The term indicates that the code is the
Object_code
1964 British computer specification
p-code machine – A similar educational virtual machine. Herbert 2015, p. 20. Computer, p. 1. Herbert 2015. Computer, p. 3. Computer, p. 7. ICL, p. 2
City_&_Guilds_Mnemonic_Code
Digital watermark tracking code produced by many printers
steganography, DocuColor tracking dots, yellow dots, secret dots, or a machine identification code (MIC), are a digital watermark which many color laser printers
Printer_tracking_dots
type boundaries and permission. Code security generally refers to the ability of the portable virtual machine to run code while offering it only a prescribed
Comparison of application virtualization software
Comparison_of_application_virtualization_software
Brevity codes used by a variety of US professionals
Machine, p.8 "Codes And Signals - More Discussion On The Radio Code Problems". "Proposed Revision Of "10" Signals" (PDF). "The Origin of The Ten Code"
Ten-code
specifically to run the UCSD p-System efficiently. Compared to other microcomputers, which use a machine language p-code interpreter, the Pascal MicroEngine
Pascal_MicroEngine
Cyber attack where any code can be run
security, arbitrary code execution (ACE) is an attacker's ability to run any commands or code of the attacker's choice on a target machine or in a target process
Arbitrary_code_execution
Subset of artificial intelligence
the machine learning field: "A computer program is said to learn from experience E with respect to some class of tasks T and performance measure P if its
Machine_learning
Programming language
available is from May 2017. P-code machine City & Guilds Mnemonic Code Wirth, 1986 PL/0 Archived 2012-02-21 at the Wayback Machine The revised third edition
PL/0
Computer security exploit technique
program and/or shared library code. Chained together, these gadgets allow an attacker to perform arbitrary operations on a machine employing defenses that catch
Return-oriented_programming
Instructions a computer can execute
is called source code. Source code needs another computer program to execute because computers can only execute their native machine instructions. Therefore
Computer_program
Compiling bytecode to machine code at runtime
translation to machine code, which is then executed directly. A system implementing a JIT compiler typically continuously analyses the code being executed
Just-in-time_compilation
Process of automating the application of machine learning
Automated machine learning (AutoML) is the process of automating the tasks of applying machine learning to real-world problems. It is the combination of
Automated_machine_learning
Computer security exploit using injected code
script code into a server-side application. Other approaches must be taken, however, when dealing with injections of user code on a user-operated machine, which
Code_injection
Software that executes source code directly
source code without first compiling it to machine code. An interpreted runtime environment differs from one that processes CPU-native executable code which
Interpreter_(computing)
Transmission of language with brief pulses
Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes
Morse_code
1979 video game
by Robert Arnstein using a custom p-code machine with 32 instructions. Unlike the Infocom z-machine, this machine was specific to this game (e.g., command
Pyramid_2000
This is a list of commercial video games with available source code. The source code of these commercially developed and distributed video games is available
List of commercial video games with available source code
List_of_commercial_video_games_with_available_source_code
Digital archive by the Internet Archive
"loaded within the page itself." The Wayback Machine's web crawler has difficulty extracting anything not coded in HTML or one of its variants, which can
Wayback_Machine
+882 and +883, non-country-specific calling codes
country codes combined with an assigned Network Identification Code (IC): +882 code space: Uses a two-digit Identification Code following the country code (e
International Networks (country code)
International_Networks_(country_code)
Java compiler in GCC with direct C++ interop support
Compiler Collection. GCJ compiles Java source code to Java virtual machine (JVM) bytecode or to machine code for a number of CPU architectures. It could
GNU_Compiler_for_Java
Type of Turing machine
Penrose goes further and writes out his entire U-machine code. He asserts that it truly is a U-machine code, an enormous number that spans almost 2 full pages
Universal_Turing_machine
Part of a machine instruction
in some abstract computing machines. In CPUs, an opcode may be referred to as an instruction machine code, instruction code, instruction syllable, instruction
Opcode
Event-driven programming language
Additionally, P programs can generate C# and C code. P is open source, licensed under MIT License, and available on GitHub. machine BankServer { var
P_(programming_language)
File containing relocatable format machine code
file that contains machine code or bytecode, as well as other data and metadata, generated by a compiler or assembler from source code during the compilation
Object_file
Computer control of machine tools
are delivered to a CNC machine in the form of a sequential program of machine control instructions such as G-code and M-code, and then executed. The
Computer_numerical_control
Casino gambling machine
machine, fruit machine (British English), puggie (Scots), poker machine or pokie machine (Australian and New Zealand English) is a gambling machine that
Slot_machine
system Packet writing — Pair programming — Parallax scrolling — Pascal — p-code machine — Perl — PHP — Post-object programming — Privacy Engineering - Procedural
Index of software engineering articles
Index_of_software_engineering_articles
Set of codewords, none a prefix of another
necessarily a prefix code. Prefix codes are also known as prefix-free codes, prefix condition codes and instantaneous codes. Although Huffman coding is just one
Prefix_code
Family of backward-compatible assembly languages
fundamental CPU instructions, making the code more human-readable compared to raw machine code. Each machine code instruction is an opcode which, in assembly
X86_assembly_language
Early higher-level language for electronic computers
Short Code was one of the first higher-level languages developed for an electronic computer. Unlike machine code, Short Code statements represented mathematic
Short Code (computer language)
Short_Code_(computer_language)
Abstract data type
dictionary stack. Many virtual machines are also stack-oriented, including the p-code machine and the Java Virtual Machine. Almost all calling conventions—the
Stack_(abstract_data_type)
Computer program that translates code from one programming language to another
programming instructions written in human convenient form into machine language codes that the computers understand and process. It is a generic term
Translator_(computing)
Data center management method
Infrastructure as code (IaC) is the process of managing and provisioning computer data center resources through machine-readable definition files, rather
Infrastructure_as_code
Multi-core microcontroller
of Pascal is implemented by a compiler and interpreter based on the p-code machine P4 system. A modern, zero-allocation, Go-like programming language built
Parallax_Propeller
System for identifying vehicles
identification number (VIN; also called a chassis number or frame number) is a unique code, including a serial number, used by the automotive industry to identify individual
Vehicle_identification_number
Programmable machine that processes data
individual instructions are stored as machine code with each instruction being given a unique number (its operation code or opcode for short). The command
Computer
Phrases used over a public address system
Hospital emergency codes are coded messages often announced over a public address system of a hospital to alert staff to various classes of on-site emergencies
Hospital_emergency_codes
IBM midrange computer (1978–1988)
Unlike some other virtual-machine architectures in which the virtual instructions are interpreted at runtime (see P-code machine), MI instructions are never
IBM_System/38
.50-caliber heavy machine gun
50-caliber Machine Guns. Osprey Publishing. p. 27. ISBN 9781849083300. War Office (1960). W.O. Code No. 10408, User Handbook for the Gun, Machine, .50 L1A1
M2_Browning
Program whose source code consists entirely of calls to functions
generate code in that form or be implemented in that form themselves. The code may be processed by an interpreter or it may simply be a sequence of machine code
Threaded_code
Primitive programming language created in 1964
P′′ (P double prime) is a primitive computer programming language created by Corrado Böhm in 1964 to describe a family of Turing machines. It provided
P′′
Computation model defining an abstract machine
particular see the footnotes 11 with corrections to the universal computing machine coding and footnote 14 with comments on Turing's first and second proofs. Turing
Turing_machine
Standard for protection against intrusion of dust and water
The IP code or Ingress Protection code indicates how well a device is protected against water and dust. It is defined by the International Electrotechnical
IP_code
Codebreaking device created at Bletchley Park (United Kingdom)
construction was the work of Harold Keen of the British Tabulating Machine Company. The first bombe, code-named Victory, was installed in March 1940 while the second
Bombe
Hypothetical self-improving program
protocol in which it rewrites its own code when it can prove the new code provides a better strategy. The machine was invented by Jürgen Schmidhuber (first
Gödel_machine
Hill. p. 7. ISBN 0-07-226224-9. "What is a compiler?". TechTarget. Retrieved 14 June 2025. Compilers that translate source code to machine code usually
Glossary_of_computer_science
Description of an algorithm that resembles a computer program
notation and program control structures. Then the code can be parsed and interpreted by a machine. Several formal specification languages include set
Pseudocode
Character encoding standard
ASCII (/ˈæski/ ASS-kee), an acronym for American Standard Code for Information Interchange, is a character encoding standard for representing a particular
ASCII
Unsolved problem in computer science
nondeterministic machine. Equivalently, a language L is in NP if there are a relation R decidable in polynomial time and a polynomial p such that x∈L⟺∃y(|y|≤p(|x|)∧R(x
P_versus_NP_problem
Programming language close to hardware
underlying machine code instructions. Because of the low level of abstraction (hence the term "low-level") between the language and machine language, low-level
Low-level programming language
Low-level_programming_language
American film era (1920s–1930s)
the Motion Picture Production Code censorship guidelines (popularly known as the Hays Code) in 1934. Although the Hays Code was adopted in 1930, oversight
Pre-Code_Hollywood
Interpreted programming language
still being easier to program than machine code. The language looks like machine code as it uses hexadecimal codes for instructions, but as an interpreter
CHIP-8
Bit-vector representation where only one bit can be set at a time
In digital circuits and machine learning, a one-hot is a group of bits among which the legal combinations of values are only those with a single high
One-hot
Data that causes a computer to follow indicated instructions
source code and to automate the generation of machine code via a build toolchain. Today, most source code is a high-level language although it is still
Executable
Heavy machine gun
The Vickers machine gun or Vickers gun is a water-cooled .303 British (7.7 mm) machine gun produced by Vickers Limited, originally for the British Army
Vickers_machine_gun
Cheat code, originally for Konami games
Konami Code (Japanese: コナミコマンド, Konami Komando, "Konami command"), also commonly referred to as the Contra Code and sometimes the 30 Lives Code, is a cheat
Konami_Code
Group of related team sports
Several codes of football Football is a family of team sports in which the object is to get the ball over a goal line, into a goal, or between goalposts
Football
Process of adapting software to run in a different context
The intermediate code instructions are translated into equivalent machine code sequences by a code generator to create executable code. It is also possible
Porting
Instructions a computer can execute
classify machine code—the exact instructions directly implemented by the hardware—and assembly language—a more human-readable alternative to machine code whose
Software
Principle of interchangeability of data and code
In computer science, the expression code as data refers to the idea that source code written in a programming language can be manipulated as data, such
Code_as_data
Russian general-purpose machine gun and its variants
romanized: Pulemyot Kalashnikova, lit. 'Kalashnikov's machine gun'), is a belt-fed general-purpose machine gun, chambered for the 7.62×54mmR rimmed cartridge
PK_machine_gun
Encoded data represented in binary notation
represented as binary. Binary code can also refer to the mass noun code that is not human readable in nature such as machine code and bytecode. Even though
Binary_code
lists standard and notable non-standard HTTP response status codes. Standardized codes are defined by IETF as documented in Request for Comments (RFC)
List_of_HTTP_status_codes
p. 85. ISBN 9780191916946. OCLC 1222774991. Steve Williams. "EnigmaZone". Martin Procházka (11 February 2022). "CryptoMuseum - Enigma source code".
List of Enigma machine simulators
List_of_Enigma_machine_simulators
Converting computer code into a machine readable form
intermediate representation of source code is converted into a form (e.g., machine code) that the target system can readily execute. Sophisticated compilers
Code_generation_(compiler)
Class of electromechanical encryption devices, used widely from the 1920s to the 1970s
is the German Enigma machine, the output of which was deciphered by the Allies during World War II, producing intelligence code-named Ultra. The primary
Rotor_machine
Sequence of program instructions invokable by other software
function in source code that is compiled to machine code that implements similar semantics. There is a callable unit in the source code and an associated
Function (computer programming)
Function_(computer_programming)
followed by (P)QR code + the 9-digit phone number. (P)QR is the code for long-distance basic service providers which have the following format: (P)[2-7][1-8]
Telephone_numbers_in_Paraguay
Approach used in obfuscating software
virtual machine commands (like p-code). Code morphing does not protect against runtime tracing, which can reveal the execution logic of any protected code. Unlike
Code_morphing
Multi-paradigm computer programming language
generated O-code, an intermediate language. The back end took the O-code and translated it into the machine code for the target machine. Only 1⁄5 of
BCPL
Instruction in computer program
address of the next machine instruction to be fetched and executed. Therefore, a branch, if executed, causes the CPU to execute code from a new memory address
Branch_(computer_science)
Series of letters and digits for sorting mail
A postal code (also known locally in various English-speaking countries throughout the world as a postcode, post code, PIN or ZIP Code) is a series of
Postal_code
Compiler for Haskell programming language
The Glasgow Haskell Compiler (GHC) is a native or machine code compiler for the functional programming language Haskell. It provides a cross-platform software
Glasgow_Haskell_Compiler
Area codes for Broward County, Florida
phones, pagers, and fax machines. In November 2000, the Florida Public Service Commission approved the use of an overlay area code to service Broward County
Area_codes_954_and_754
Variation to BCD-code where three (11) is added to a binary representation
binary code (often abbreviated as XS-3, 3XS or X3), shifted binary or Stibitz code (after George Stibitz, who built a relay-based adding machine in 1937)
Excess-3
Machine gun
identification code Kampfwagen-Maschinengewehr 350(i). It was also adapted for use as an infantry machine gun. For this purpose the gun was mounted on a machine-gun
Breda_38
Codes used to identify where a vehicle is registered
by an international vehicle registration code, also called Vehicle Registration Identification code or VRI code, formerly known as an International Registration
International vehicle registration code
International_vehicle_registration_code
Set of methods for supervised statistical learning
machines, a data point is viewed as a p-dimensional vector (a list of p numbers), and we want to know whether we can separate such points with a (p−1)-dimensional
Support_vector_machine
travel, tourism, insurance
P CODE-MACHINE
P CODE-MACHINE
P CODE-MACHINE
P CODE-MACHINE
P CODE-MACHINE
P CODE-MACHINE
P CODE-MACHINE
P CODE-MACHINE
P CODE-MACHINE
travel, tourism, insurance