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Computer architecture for security
Capability Hardware Enhanced RISC Instructions (CHERI) is a technology designed to improve security for reduced instruction set computer (RISC) processors
Capability Hardware Enhanced RISC Instructions
Capability_Hardware_Enhanced_RISC_Instructions
Anomaly in computer security and programming
CHERI (Capability Hardware Enhanced RISC Instructions) is a computer processor technology designed to improve security. It operates at a hardware level
Buffer_overflow
Family of RISC-based computer architectures
lowercase as arm) is a family of RISC instruction set architectures for computer processors. Arm Holdings develops the instruction set architecture and licenses
ARM_architecture_family
Instruction set extensions accelerating AES operations
hardware acceleration for AES, GHASH, SHA-256, SHA-512, SM3, and SM4. Before the AES-specific instructions were available on RISC-V, a number of RISC-V
AES_instruction_set
Core of a computer operating system
called capability-based addressing. Most commercial computer architectures lack such MMU support for capabilities; the Capability Hardware Enhanced RISC Instructions
Kernel_(operating_system)
Topics referred to by the same term
time of the Ottoman Empire, from the Turkish şer’(i) Capability Hardware Enhanced RISC Instructions, a computer architecture research project Chari (disambiguation)
Cheri
Layer of hardware-level instructions or data structures
control data or instructions used to implement a processor's instruction set architecture or internal control sequences. It consists of hardware-level operations
Microcode
Type of computer architecture
the instruction level. CHERI (Capability Hardware Enhanced RISC Instructions) uses a tagged architecture to add capability-based addressing to several existing
Tagged_architecture
8-bit microprocessor from 1975
performing two valid instructions consecutively, performing strange mixtures of two instructions, or simply doing nothing at all. Some hardware designers used
MOS_Technology_6502
Instruction set architecture
Interlocked Pipelined Stages) is a family of reduced instruction set computer (RISC) instruction set architectures (ISA) developed by MIPS Computer Systems
MIPS_architecture
State of being protected from memory access bugs
transformation and runtime concurrent monitoring techniques. Capability Hardware Enhanced RISC Instructions (CHERI), which replaces ordinary pointers with a longer
Memory_safety
Technology used in CPUs
ISA Version 3.0". IBM. November 30, 2015. p. 1003. "PA-RISC 1.1 Architecture and Instruction Set Reference Manual, Third Edition" (PDF). Hewlett-Packard
NX_bit
Central computer component that executes instructions
they take, is to execute a sequence of stored instructions that is called a program. The instructions to be executed are kept in some kind of computer
Central_processing_unit
Formally verified capability-based microkernel
seL4 (security enhanced L4) is an open-source, high-assurance, capability-based microkernel. It inherits the performance and design characteristics of
SeL4
Personal computer
Arthur operating system, with later models introducing RISC OS and, in a separate workstation range, RISC iX. The first Archimedes models were introduced in
Acorn_Archimedes
Family of instruction set architectures
save instructions and the use of registers for address calculations such as scaling an index.) Some special instructions lost priority in the hardware design
X86
Instruction set
developed by IBM. The name is an acronym for Performance Optimization With Enhanced RISC. The ISA was used for high-end IBM microprocessors during the early
IBM_POWER_architecture
64-bit extension of x86 architecture
fewer registers than many RISC instruction sets (e.g. Power ISA has 32 GPRs; 64-bit ARM, RISC-V I, SPARC, Alpha, MIPS, and PA-RISC have 31) or VLIW-like machines
X86-64
EIST (Enhanced Intel SpeedStep Technology) in E5365, L5335 Execute Disable Bit TXT, enhanced security hardware extensions SSSE3 SIMD instructions iAMT2
List_of_Intel_processors
Line of single-chip microprocessors from Microchip Technology
compilers. PIC instruction sets vary from about 35 instructions for the low-end PICs to over 80 instructions for the high-end PICs. The instruction set includes
PIC_microcontrollers
Series of pioneering microprocessors from the 1980s
complex memory-to-memory instructions, all of which place it firmly in the CISC camp. Unlike register-heavy load/store RISC CPUs, the transputer had only
Transputer
Free and open-source Unix-like operating system
to modern ARM-based systems, Raspberry Pis, and RISC-V hardware. Portability is assisted by a hardware abstraction layer that separates machine-independent
NetBSD
Family of distributed open-source operating systems
hardware devices of ARM, RISC-V and x86 architectures with memory volumes ranging from as small as 128 KB up to more than 1 MB. It supports hardware devices
OpenHarmony
reduced instruction set computing (RISC). RISCs usually had larger numbers of registers, accessed by simpler instructions, with a few instructions specifically
History of general-purpose CPUs
History_of_general-purpose_CPUs
Family of 64-bit Intel microprocessors
reduced instruction set computer (RISC) architectures caused by the great increase in complexity needed for executing multiple instructions per cycle
Itanium
CPU that implements instruction-level parallelism within a single processor
execute multiple instructions per clock cycle Seymour Cray's CDC 6600 from 1964, while not capable of issuing multiple instructions per cycle, is often
Superscalar_processor
The list of Super NES enhancement chips demonstrates Nintendo hardware designers' plan to expand the Super Nintendo Entertainment System with special coprocessors
List of Super NES enhancement chips
List_of_Super_NES_enhancement_chips
Line of computers sold by Digital Equipment Corporation
instructions to save the data and another 16 to restore it. Using the mask, a single 16-bit value performs the same operations internally in hardware
VAX
CISC microprocessor
unit (MMU). It had a RISC-based architecture, inspired by the Intel i960 and MIPS architectures, and other RISC processor instructions, such as JARL (Jump
NEC_V60
Family of microcontrollers
path, SIMD and DSP instructions, along with other audio- and video-processing features. The instruction set was similar to other RISC cores, but it was
AVR_microcontrollers
The history of computing hardware starting at 1960 is marked by the conversion from vacuum tube to solid-state devices such as transistors and then integrated
History of computing hardware (1960s–present)
History_of_computing_hardware_(1960s–present)
Chinese microprocessor manufacturer
reduced instruction set computer (RISC) Loongson 3 5000 series. A Loongson developer described it as "... a new RISC ISA, which is a bit like MIPS or RISC-V
Loongson
Computer processor contained on an integrated-circuit chip
advanced—with a superscalar RISC core, 64-bit bus, and internally overclocked—it could still execute Series 32000 instructions through real-time translation
Microprocessor
American computer company (1987–1999)
instruction fetch, but achieves a RISC-like 1 instruction per clock. The Arithmetic units, ALUs with data fetch capability, are implemented 32 to a chip.
MasPar
32-bit RISC CPU architecture
64-bit instructions to encode a RISC-style instruction set. The 32-bit ARM and MIPS architecture have been extended with reduced 16-bit instruction sets
V850
Small computer on a single integrated circuit
pipelines (often three instructions or less), small write buffers, and ensure that longer instructions are continuable or restartable. RISC design principles
Microcontroller
platform waned. The capability of RISC OS to run entirely from ROM and the use of a low power CPU made it suited for embedded applications. RISC OS was used in
History_of_personal_computers
Instruction for x86 microprocessors
Motorola 68000 series — which never had a CPUID instruction of any kind — certain specific instructions required elevated privileges. These could be used
CPUID
Computer programmer
broader); the Super NES, even with the enhancement provided by the second-generation Super FX co-processor – a 21.4 MHz RISC chip – still fell significantly
Randy_Linden
32-bit microprocessor by Motorola
model as well. The new instructions include some minor improvements and extensions to the supervisor state, several instructions for software management
Motorola_68020
ARM Cortex-M based Microcontrollers by STMicroelectronics
The STM32 family of the microcontroller ICs is based on various 32-bit RISC ARM Cortex-M cores. STMicroelectronics licenses the ARM Processor IP from
STM32
architecture processors. It takes its name from the reduced instruction set computer (RISC) architecture supported. The OS was originally developed by
History of the graphical user interface
History_of_the_graphical_user_interface
Codename for a family of graphics processing unit microarchitectures
cosine. Each shader cluster can execute 6 instructions per clock cycle (peak), consisting of 5 shading instructions plus 1 branch. Notably, the VLIW architecture
TeraScale_(microarchitecture)
American semiconductor company
and capable of 2 GFLOPS (single-precision). Epiphany's RISC processors use a custom instruction set architecture (ISA) optimised for single-precision floating-point
Zero_ASIC
Real-time operating system
supports AMD/Intel architecture, POWER architecture, ARM architectures, and RISC-V. The RTOS can be used in multicore asymmetric multiprocessing (AMP), symmetric
VxWorks
American computer company, 1982–2010
to the evolution of several key computing technologies, among them Unix, RISC processors, thin client computing, and virtualized computing. At its height
Sun_Microsystems
DEC brand of computers
January 1989 as the first commercially available RISC-based machine built by DEC. By the late 1980s, Unix RISC vendors like Sun Microsystems lured many customers
DECstation
General-purpose programming language
support some libraries written in C. PyPy offers support for the RISC-V instruction-set architecture. Codon is an implementation with an ahead-of-time
Python_(programming_language)
Video game console by Nintendo
technology development, said the company's goal was to select a "simple RISC architecture" to help speed up the development of games by making it easier
GameCube
Free and open-source Unix-like operating system
soft-float RISC-V were supported in earlier releases but are not supported in the current release. Supported devices are listed in the FreeBSD 14.3 Hardware Notes
FreeBSD
Smartphone electronics product line
2014. Retrieved October 3, 2013. "Qualcomm Snapdragon S4 Pro MSM8960DT RISC Multi-core Application Processor with Modem". PDAdb.net. Archived from the
List of Qualcomm Snapdragon systems on chips
List_of_Qualcomm_Snapdragon_systems_on_chips
Combinational digital circuit
same as a machine language instruction, though in some cases it may be directly encoded as a bit field within such instructions. The status outputs are various
Arithmetic_logic_unit
1981–2009 American computing company
an American high-performance computing manufacturer, producing computer hardware and software. Founded in Mountain View, California, in November 1981 by
Silicon_Graphics
32-bit microprocessor by Intel
documented 80386 instructions are implemented through microcode, unlike some earlier and later x86 processors which execute certain instructions entirely in
I386
Computer intended for use by an individual person
it contains or operates on, and the software that provides instructions for the hardware to accomplish tasks. Some sub-systems of a personal computer
Personal_computer
Sega video game console
two-way 360 MIPS superscalar Hitachi SH-4 32-bit RISC, clocked at 200 MHz with an 8 kB instruction cache and 16 kB data cache and a 128-bit graphics-oriented
Dreamcast
Number of transistors in a device
ISBN 978-0-7391-7621-4. Bakoglu, Grohoski, and Montoye. "The IBM RISC System/6000 processor: Hardware overview." IBM J. Research and Development. Vol. 34 No. 1
Transistor_count
American computer manufacturer (1957–1998)
microcomputers improved in the late 1980s, especially with the introduction of RISC-based workstation machines, the performance niche of the minicomputer was
Digital_Equipment_Corporation
Mixed-signal microcontroller family
available for general use. The instruction set is very simple: 27 instructions exist in three categories. Most instructions occur in .B (8-bit byte) and
TI_MSP430
PlayStation Memory Card and PDA by Sony
connected to a PlayStation through a memory card slot. CPU: ARM7T (32-bit RISC chip variable clock, max 7.995 MHz) Memory: 2 KB SRAM, 128 KB Flash RAM (via
PocketStation
32-bit superminicomputer delivered in 1981 by Norsk Data
path, and the direct memory access hardware having its own path. A prefetch processor was used to decode instructions fetched from memory, to populate the
ND-500
Message Digest RIR—Regional Internet registry RISC—Reduced Instruction Set Computer RISC OS—Reduced Instruction Set Computer Operating System RJ—Registered
List of computing and IT abbreviations
List_of_computing_and_IT_abbreviations
Brand by Intel
microoperations rather than instructions with advantage of eliminating instruction decoding bottleneck so that the design can use RISC technology. This came
Pentium_4
1986 video game
used up the memory of the BBC Micro and the Electron lacks hardware scrolling capability. After completing the sequel to the game, Martin Edmondson and
Stryker's_Run
Practice of decreasing the clock rate of a computer
manufacturers can choose to limit the capability of a machine in order to make it more efficient. Reduced instruction set computer (RISC) models can help makers build
Underclocking
American multinational semiconductor company
capability in addition to graphics processing, with a particular aim of supporting heterogeneous computing on AMD's APUs. GCN's reduced instruction set
AMD
Free Unix-like operating system kernel
jointly developed by Intel and Hewlett-Packard to supersede the older PA-RISC), and for the newer 64-bit MIPS processor. Development for 2.4.x changed
Linux_kernel
Gaming generation from 1998 to 2013
SuperH-4 32-bit reduced instruction set computing (RISC) instruction set architecture (ISA) using 16-bit fixed-length instructions, alongside a 64-bit double-precision
Sixth generation of video game consoles
Sixth_generation_of_video_game_consoles
Brand of GPUs by Nvidia
introduced SLI (Scalable Link Interface) and PureVideo capability (integrated partial hardware MPEG-2, VC-1, Windows Media Video, and H.264 decoding and
GeForce
Line of mainframe computers
z/Architecture in 2000. On September 5, 1990, IBM published a group of hardware and software announcements, two of which included overviews of three announcements:
IBM_System/390
Series of British microcomputers by Acorn
hardware, some of the most common being: RGB monitors Printers, plotters Modems Acorn produced its own 32-bit Reduced Instruction Set Computing (RISC)
BBC_Micro
Video game console add-on
According to one developer, the 32X's hardware was significantly slower than the Saturn and lacked the capability for texture mapping. Journalists were
32X
Cocke's RISC architecture. RISC simplified the instructions given to computers, making them faster and more powerful. Today, RISC architecture is the basis
History_of_IBM
Sony's video gaming brand
brainchild of Ken Kutaragi, a Sony executive who managed one of the company's hardware engineering divisions and was later dubbed "The Father of the PlayStation"
PlayStation
Computer processor
specifications of processors in the TILEPro family: 64 RISC processor cores 16 KB L1 instruction and 8 KB L1 data cache per core 64 KB L2 cache per core
TILEPro64
increase the capability and performance of the router. The IXP1200 integrates a StrongARM SA-1100-derived core and six microengines, which were RISC microprocessors
IXP1200
Chinese multinational technology company
Retrieved 4 June 2020. "Alibaba Unveils Open Source RISC-V CPU Amid US-China Trade War". Tom's Hardware. 26 July 2019. Archived from the original on 15 February
Alibaba_Group
Procedural, imperative computer programming language
programmed using different programming languages, usually on different computer hardware. Business users were moving from Autocoders via COMTRAN to COBOL, while
PL/I
American multinational technology company
only other major competitor in processor instruction sets is RISC-V, which is an open source CPU instruction set. The major Chinese phone and telecommunications
Intel
enhanced with the addition of more powerful hardware acceleration for image processing (supporting up-to 5MP cameras), as well as featuring enhanced video
Nomadik
1972–1998 American producer of minicomputers
from Computervision. RISC processors from MIPS Technologies and graphics processors from Silicon Graphics comprised the hardware platform for PRIMEDesign
Prime_Computer
Means of entering commands to software
computer via text evolved over two decades, transitioning from physical hardware to sophisticated software. Before the CLI, computers were programmed using
Command-line_interface
Version history of the Linux kernel
clang.llvm.org. Retrieved 31 May 2026. Corbet, Jonathan (10 March 2025). "Capability analysis for the kernel". LWN.net. Retrieved 31 May 2026. Corbet, Jonathan
Linux_kernel_version_history
Free and open-source object relational database management system
ARMv6 in Raspberry Pi), RISC-V, z/Architecture, S/390, PowerPC (incl. 64-bit Power ISA), SPARC (also 64-bit), MIPS and PA-RISC. It was also known to work
PostgreSQL
Program that relocates its own address-dependent instructions and data when run
then transfers processor control from the instructions found at the source locations of memory to the instructions found at the destination locations of memory
Self-relocation
application is a very early direct manipulation interface". September 11, 2012. "RISC revealed". Acorn User. August 1987. p. 11. Retrieved April 26, 2021. Matthew
Timeline of computing 1980–1989
Timeline_of_computing_1980–1989
licensing details are included. Many versions of the official Arduino hardware have been commercially produced to date: The following have been superseded
List of Arduino boards and compatible systems
List_of_Arduino_boards_and_compatible_systems
Combined executable file for multiple processor types or operating systems
to run on PCs and the other platforms OPENSTEP supported (m68k/SPARC/PA-RISC). Multi-Architecture (fat) binaries are a feature of the Mach-O format. The
Fat_binary
Microcomputer
Machine, Teletext Character Generator, July 1982, Mullard. "BFont characters", RISC OS 3.7 User Guide, 20 January 1997 "ReadMe.txt" (PDF), L2/19-025: Proposal
BBC_Master
Computer software company
Systems to gain access to the compiler back end technology for the MIPS R3000 RISC microprocessor, and commenced work on an Ada cross compiler system for the
Advanced_Computer_Techniques
Technology award given by the US President
of Reduced Instruction Set Computer (RISC) architecture that significantly increased the speed and efficiency of computers, thereby enhancing U.S. technological
National Medal of Technology and Innovation
National_Medal_of_Technology_and_Innovation
Video editing software
example) and more recently fine cut editing. Blackbird then outputs instructions in standard formats which can be applied to the high-quality master-footage
Blackbird_(software)
travel, tourism, insurance
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