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ReTargetable Graphics
Retargetable graphics (abbreviated as RTG) is a device driver API mainly used by third-party graphics hardware to interface with AmigaOS via a set of libraries. The software libraries may include software tools to adjust resolution, screen colors, pointers, and screenmodes. It will use available hardware and will not extend the capabilities in any way. The Amiga OS 3.x intuition.library is limited to 8-bit display depths, but RTG libraries make it possible to handle higher depths such as 24 bits; on Amiga there are two common APIs: Picasso 96 and CyberGraphX, which are almost compatible with each other. Both Picasso 96 and CyberGraphX require at least 4 MB RAM and a 68020 CPU to operate. EGS and other early graphics card drivers Commodore planned to introduce retargetable graphics in future version of AmigaOS (4.0), but the company was not able to deliver such solution before its demise. Third-party graphics card manufacturers were thus forced to create their own softwar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conventional PCI
Peripheral Component Interconnect (PCI) is a local computer bus for attaching hardware devices in a computer and is part of the PCI Local Bus standard. The PCI bus supports the functions found on a processor bus but in a standardized format that is independent of any given processor's native bus. Devices connected to the PCI bus appear to a bus master to be connected directly to its own bus and are assigned addresses in the processor's address space. It is a parallel bus, synchronous to a single bus clock. Attached devices can take either the form of an integrated circuit fitted onto the motherboard (called a ''planar device'' in the PCI specification) or an expansion card that fits into a slot. The PCI Local Bus was first implemented in IBM PC compatibles, where it displaced the combination of several slow Industry Standard Architecture (ISA) slots and one fast VESA Local Bus (VLB) slot as the bus configuration. It has subsequently been adopted for other computer type ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AmigaOS 4
AmigaOS 4 (abbreviated as OS4 or AOS4) is a line of Amiga operating systems which runs on PowerPC microprocessors. It is mainly based on AmigaOS 3.1 source code developed by Commodore International, Commodore, and partially on version 3.9 developed by Haage & Partner. "The Final Update" (for OS version 4.0) was released on 24 December 2006 (originally released in April 2004) after five years of development by the Belgian company Hyperion Entertainment under license from Amiga, Inc. for AmigaOne registered users.http://www.hyperion-entertainment.biz/8080/news/2007-01-01 History During the five years of development, purchasers of AmigaOne machines could download pre-release versions of AmigaOS 4.0 from Hyperion's repository as long as these were made available. On 20 December 2006, Amiga, Inc. terminated the contract with Hyperion Entertainment to produce or sell AmigaOS 4. Nevertheless, AmigaOS 4.0 was released commercially for Amigas with PowerUP (accelerator), PowerUP acceler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System
An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for efficient use of the system and may also include accounting software for cost allocation of Scheduling (computing), processor time, mass storage, peripherals, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computerfrom cellular phones and video game consoles to web servers and supercomputers. , Android (operating system), Android is the most popular operating system with a 46% market share, followed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UAE (emulator)
UAE is a computer emulator which emulates the computer hardware, hardware of Commodore International's Amiga range of computers. Released under the GNU General Public License, UAE is free software. History Bernd Schmidt conceived of an emulator that can run Amiga software when he found that such a task was widely believed to be impossible. Schmidt had written previous programs for Amiga, and was further motivated by the desire to not lose games, demos, and sound modules to switching operating systems. UAE was released in 1995 and was originally called the ''Unusable Amiga Emulator'', due to its inability to boot. In its early stages, it was known as ''Unix Amiga Emulator'' and later with other names as well. Today the name stands for ''Universal Amiga Emulator''. Features UAE is almost a full-featured Amiga emulator. It emulates most of its functions: * Original Amiga chipset, Original Chip Set (OCS), Enhanced Chip Set (ECS) and Advanced Graphics Architecture (AGA) * I/O devic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Industry Standard Architecture
Industry Standard Architecture (ISA) is the 16-bit internal bus (computing), bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s. The bus was (largely) backward compatible with the 8-bit bus of the 8088-based IBM PC, including the IBM PC/XT as well as IBM PC compatibles. Originally referred to as the PC bus (8-bit) or AT bus (16-bit), it was also termed ''I/O Channel'' by IBM. The ISA term was coined as a retronym by IBM PC clone manufacturers in the late 1980s or early 1990s as a reaction to IBM attempts to replace the AT bus with its new and incompatible Micro Channel architecture. The 16-bit ISA bus was also used with 32-bit processors for several years. An attempt to extend it to 32 bits, called Extended Industry Standard Architecture (EISA), was not very successful, however. Later buses such as VESA Local Bus and Peripheral Component Interconnect, PCI were used instead, often along with ISA slots on the same mainbo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tseng Labs ET4000
The Tseng Labs ''ET4000'' was a line of SVGA graphics controller chips during the early 1990s, commonly found in many 386/ 486 and compatible systems, with some models, notably the ''ET4000/W32'' and later chips, offering graphics acceleration. Offering above average host interface throughput coupled with a moderate price, Tseng Labs' ''ET4000'' chipset family were well regarded for their performance, and were integrated into many companies' lineups, notably with Hercules' ''Dynamite'' series, the Diamond ''Stealth 32'' and several ''Speedstar'' cards, and on many generic boards. Models ET4000AX The ''ET4000AX'' was a major advancement over Tseng Labs' earlier ''ET3000'' SVGA chipset, featuring a new 16-bit host interface controller with deep FIFO buffering and caching capabilities, and an enhanced, variable-width memory interface with support for up to 1MB of memory with a ≈16-bit VRAM or ≈32-bit DRAM memory data bus width. The FIFO buffers and cache functions had the effe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirrus Logic
Cirrus Logic Inc. is an American fabless semiconductor company, fabless semiconductor supplier that specializes in analog, mixed-signal, and audio Digital signal processor, DSP integrated circuits (ICs). Since 1998, the company's headquarters have been in Austin, Texas. The company's audio processors and audio converters feature in audio and consumer entertainment products, including smartphones, tablets, laptops, digital headsets, automotive entertainment systems, home-theater receivers, and smart home applications, such as smart speakers. The company has over 3,200 customers including Ford, Harman International, Itron, LG, Lenovo, Onkyo, Marantz, Motorola, Panasonic, Pioneer, Samsung, SiriusXM, Sony, Apple, and Vizio. Apple makes up 89% of the company's revenue in 2025. Suhas Patil founded the company as "Patil Systems, Inc." in Salt Lake City in 1981; it adopted the name "Cirrus Logic" when it moved to Silicon Valley in 1984. Cirrus Logic has more than 3,900 patents issued and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S3 Trio
The S3 Trio range were popular video cards for personal computers and were S3's first fully integrated graphics accelerators. As the name implies, three previously separate components were now included in the same ASIC: the graphics core, RAMDAC and clock generator. The increased integration allowed a graphics card to be simpler than before and thus cheaper to produce. Variants The Trio64 and 64V+, first appeared in 1995, are essentially fully integrated solutions based upon the earlier Vision 864 and 868 accelerator chipsets. Like the 868, the 64V+ has a video acceleration engine that can perform YUV to RGB color space conversion and horizontal linear filtered scaling. Unlike the Vision964/968, the Trio chips do not support VRAM, and are limited to FPM DRAM and EDO DRAM only. The 2D graphics hardware was later used in the ViRGE. The Trio32 is a low-cost version of the Trio64 with a narrower 32-bit DRAM interface (vs. 64-bit). The Trio64V2 improved on the 64V+ by including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
S3 ViRGE
The S3 ViRGE (Video and Rendering Graphics Engine) graphics chipset was one of the first 2D/ 3D accelerators designed for the mass market. Introduced in 1996 by then graphics powerhouse S3, Inc., the ViRGE was S3's first foray into 3D-graphics. The S3/Virge was the successor to the successful Trio64V+. ViRGE/325 was pin compatible with the Trio64 chip, retaining the DRAM-framebuffer interface (up to 4MB), and clocking both the core and memory up to 80 MHz. In Windows, Virge was benchmarked as the fastest DRAM-based accelerator of the era. The VRAM-based version, ViRGE/VX, was actually slower in lower resolutions, but had a faster RAMDAC to support high-resolution modes not available on the 325. Support Part of S3's marketing plan for the ViRGE included the "S3D" standard, stating that members of the ViRGE family carried the ''S3D Graphics Engine''. Games that supported ViRGE directly put this logo on their box so owners of the 3D card would know that it would run as wel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amiga Zorro III
The Zorro III is a computer bus specification, introduced in 1990 with the Amiga 3000. As an expansion bus, it is used to attach peripheral devices to an Amiga motherboard. Designed by Commodore International lead engineer Dave Haynie, the 32-bit Zorro III replaced the 16-bit Zorro II bus used in the Amiga 2000. As with the Zorro II bus, Zorro III allows for true Plug and Play autodetection (similar to, and prior to, the PC's PCI bus) wherein devices are dynamically allocated the resources they need on boot. Details Zorro III continued Zorro II's direct memory-mapped address design (unlike 80x86 processors, the MC68K family used in the Amiga does not have a separate I/O address mechanism). Just as with Zorro II on 24-bit systems, Zorro III reserves a large chunk of 32-bit real memory address space for large memory mapped cards, a smaller chunk with smaller allocation granularity for "I/O" type board. Zorro III was never supported on 24-bit address or 16-bit data devices—i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amiga Zorro II
Zorro II is the general purpose expansion bus used by the Amiga 2000 computer. The bus is mainly a buffered extension of the Motorola 68000 bus, with support for bus mastering DMA. The expansion slots use a 100-pin connector and the card form factor is the same as the IBM PC. Zorro II cards implement the Autoconfig protocol for automatic address space assignment (similar to the later PCI technology on the PC). The prototype "Zorro bus" expansion box for the Amiga 1000 was the basis for the initial Amiga 2000-A model design. This box connected to the Amiga 1000 unbuffered CPU bus card edge connector An edge connector is the portion of a printed circuit board (PCB) consisting of signal trace, traces leading to the edge of the board that are intended to plug into a matching jack (connector), socket. The edge connector is a money-saving devic .... Zorro II was succeeded by Zorro III, a 32-bit, asynchronous bus. Amiga memory map External links Amiga Hardware Database- Des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
