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Aemulor
In computing, Aemulor is an emulator of the earlier addressing-mode ARM microprocessors. It runs on ARM architecture, ARM processors under addressing-mode versions of . It was written by Adrian Lees and released in 2003. An enhanced version is available under the name Aemulor Pro. The software allows Raspberry Pi, Iyonix PC and A9home computers running to make use of some software written for older hardware. , compatibility with the BeagleBoard single-board computer was under development. Development The software's existence was first reported around the time of the announcement of the Iyonix in October 2002. A demo version was released in February 2003, with the commercial release in March of that year. #Pro, Aemulor Pro was released in 2004. This added enhancements, including support for low colour modes, required by scorewriter Sibelius (software), Sibelius and many games. A version for the A9home was released in 2005. The software was exhibited at the 2006 Wakefield Show ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RISC OS
RISC OS is a computer operating system originally designed by Acorn Computers Ltd in Cambridge, England. First released in 1987, it was designed to run on the ARM chipset, which Acorn had designed concurrently for use in its new line of Archimedes personal computers. RISC OS takes its name from the reduced instruction set computer (RISC) architecture it supports. Between 1987 and 1998, RISC OS was included in every ARM-based Acorn computer model, including the Acorn Archimedes line, Acorn's R line (with RISC iX as a dual-boot option), RiscPC, A7000, and prototype models such as the Acorn NewsPad and Phoebe computer. A version of the OS, named NCOS, was used in Oracle Corporation's Network Computer and compatible systems. After the break-up of Acorn in 1998, development of the OS was forked and continued separately by several companies, including , Pace Micro Technology, and Castle Technology. Since then, it has been bundled with several ARM-based desktop computers such as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A9home
The A9home was a niche small-form-factor desktop computer running RISC OS Adjust32. It was officially unveiled at the 2005 Wakefield Show, and is the second commercial ARM-based RISC OS computer to run a 32-bit version of RISC OS. When the Iyonix PC was withdrawn from sale, the A9home remained the only hardware to be manufactured specifically for the marketplace. Details The A9home was smaller than the Mac Mini and housed in cobalt-blue aluminium casing, measuring × × in size. The machine runs on a Samsung ARM9 processor, has 128 MB SDRAM of main memory and VRAM and houses an internal hard disk of . On the front, it features two ports, a microphone and a headphones socket. On the rear, it has two ports, two PS/2 ports, 10/100 BaseT network port, a RS-232 serial port and a power connection socket. Like the Mac mini, it is powered by an external PSU (, ). Furthermore, it has a power/reset switch, a status/health indicator and a drive activity indicator LED. The A9ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sibelius (software)
Sibelius is a scorewriter program developed and released by Sibelius Software Limited (now part of Avid Technology). It is the world's largest selling music notation program. Beyond creating, editing and printing music scores, Sibelius can also play the music back using sampled or synthesised sounds. It produces printed scores, and can also publish them via the Internet for others to access. Less advanced versions of Sibelius at lower prices have been released, as have various add-ons for the software. Named after the Finnish composer Jean Sibelius, the company was founded in April 1993 by twin brothers Ben and Jonathan Finn to market the eponymous music notation program they had created. It went on to develop and distribute various other music software products, particularly for education. In addition to its head office in Cambridge and subsequently London, Sibelius Software opened offices in the US, Australia and Japan, with distributors and dealers in many other coun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flag (computing)
A bit field is a data structure that consists of one or more adjacent bits which have been allocated for specific purposes, so that any single bit or group of bits within the structure can be set or inspected. A bit field is most commonly used to represent integral types of known, fixed bit-width, such as single-bit Booleans. The meaning of the individual bits within the field is determined by the programmer; for example, the first bit in a bit field (located at the field's base address) is sometimes used to determine the state of a particular attribute associated with the bit field. Within CPUs and other logic devices, collections of bit fields called flags are commonly used to control or to indicate the outcome of particular operations. Processors have a status register that is composed of flags. For example if the result of an addition cannot be represented in the destination an arithmetic overflow is set. The flags can be used to decide subsequent operations, such as conditi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Interrupt
In digital computers, an interrupt (sometimes referred to as a trap) is a request for the processor to ''interrupt'' currently executing code (when permitted), so that the event can be processed in a timely manner. If the request is accepted, the processor will suspend its current activities, save its state, and execute a function called an ''interrupt handler'' (or an ''interrupt service routine'', ISR) to deal with the event. This interruption is often temporary, allowing the software to resume normal activities after the interrupt handler finishes, although the interrupt could instead indicate a fatal error. Interrupts are commonly used by hardware devices to indicate electronic or physical state changes that require time-sensitive attention. Interrupts are also commonly used to implement computer multitasking, especially in real-time computing. Systems that use interrupts in these ways are said to be interrupt-driven. Types Interrupt signals may be issued in response to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XScale
XScale is a microarchitecture for central processing units initially designed by Intel implementing the ARM architecture (version 5) instruction set. XScale comprises several distinct families: IXP, IXC, IOP, PXA and CE (see more below), with some later models designed as system-on-a-chip (SoC). Intel sold the PXA family to Marvell Technology Group in June 2006. Marvell then extended the brand to include processors with other microarchitectures, like ARM's Cortex. The XScale architecture is based on the ARMv5TE ISA without the floating-point instructions. XScale uses a seven-stage integer and an eight-stage memory super- pipelined microarchitecture. It is the successor to the Intel StrongARM line of microprocessors and microcontrollers, which Intel acquired from DEC's Digital Semiconductor division as part of a settlement of a lawsuit between the two companies. Intel used the StrongARM to replace its ailing line of outdated RISC processors, the i860 and i960. All the generations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Assembly Language
In computer programming, assembly language (or assembler language, or symbolic machine code), often referred to simply as Assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence between the instructions in the language and the architecture's machine code instructions. Assembly language usually has one statement per machine instruction (1:1), but constants, comments, assembler directives, symbolic labels of, e.g., memory locations, registers, and macros are generally also supported. The first assembly code in which a language is used to represent machine code instructions is found in Kathleen and Andrew Donald Booth's 1947 work, ''Coding for A.R.C.''. Assembly code is converted into executable machine code by a utility program referred to as an ''assembler''. The term "assembler" is generally attributed to Wilkes, Wheeler and Gill in their 1951 book ''The Preparation of Programs for an Electronic Digital Com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C (programming Language)
C (''pronounced like the letter c'') is a General-purpose language, general-purpose computer programming language. It was created in the 1970s by Dennis Ritchie, and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs. It has found lasting use in operating systems, device drivers, protocol stacks, though decreasingly for application software. C is commonly used on computer architectures that range from the largest supercomputers to the smallest microcontrollers and embedded systems. A successor to the programming language B (programming language), B, C was originally developed at Bell Labs by Ritchie between 1972 and 1973 to construct utilities running on Unix. It was applied to re-implementing the kernel of the Unix operating system. During the 1980s, C gradually gained popularity. It has become one of the measuring programming language popularity, most widely used programming languages, with C compilers avail ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sibelius On Iyonix Under Aemulor
Jean Sibelius ( ; ; born Johan Julius Christian Sibelius; 8 December 186520 September 1957) was a Finnish composer of the late Romantic and early-modern periods. He is widely regarded as his country's greatest composer, and his music is often credited with having helped Finland develop a national identity during its struggle for independence from Russia. The core of his oeuvre is his set of seven symphonies, which, like his other major works, are regularly performed and recorded in Finland and countries around the world. His other best-known compositions are ''Finlandia'', the ''Karelia Suite'', ''Valse triste'', the Violin Concerto, the choral symphony ''Kullervo'', and ''The Swan of Tuonela'' (from the ''Lemminkäinen Suite''). His other works include pieces inspired by nature, Nordic mythology, and the Finnish national epic, the ''Kalevala;'' over a hundred songs for voice and piano; incidental music for numerous plays; the one-act opera ''The Maiden in the Tower''; chamb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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