The Alpha architecture originally defined six data types: To maintain a level of compatibility with VAX, the 32-bit architecture the Alpha succeeded, two VAX data types were included: The Alpha had some provision for future expansion of the instruction set to include 128-bit data types. It provides a virtual AlphaServer 400 equipped with 1 CPU, 128MB memory, 7 disk drives, two NICs, and two virtual serial ports. Compaq, already an Intel customer, decided to phase out Alpha in favor of the forthcoming Hewlett-Packard/Intel Itanium architecture, and sold all Alpha intellectual property to Intel in 2001, effectively killing the product. Share. Alpha was a 64-bit RISC architecture that DEC developed as the successor to its VAX platform. Topics related to both. The Alpha ISA has a fixed instruction length of 32 bits. [1] Open source operating systems that run on the Alpha are Linux (Debian, Gentoo Linux and Red Hat Linux), BSD UNIX (NetBSD, OpenBSD and FreeBSD up to 6.x) and L4Ka::Pistachio. popular file formats are already compressed, so file system compression wouldn't accomplish anything anyway.”, But if nothing else it's nice to know that DEC Alpha lives on, albeit as an irritant, deep within the bowels of Windows. These microprocessors were most prominently used in a variety of DEC workstations and servers, which eventually formed the basis for almost all of their mid-to-upper-sc… AlphaServer is the name given to a series of server computers, produced from 1994 onwards by Digital Equipment Corporation, and later by Compaq and HP. There is no instruction(s) for division as the architects considered the implementation of division in hardware to be adverse to simplicity. The last models, the Alpha VME 5/352 and Alpha VME 5/480, were based on the 21164 processor. The third, 21264 or EV6, was the first microprocessor to combine both high operating frequency and the more complicated out-of-order execution microarchitecture. A persistent report attributed to DEC insiders suggests the choice of the AXP tag for the processor was made by DEC's legal department, which was still smarting from the VAX trademark fiasco. It is similar to the integer operate format, but has an 11-bit function field made possible by using the literal and unused bits which are reserved in integer operate format. This severely hampers your ability to get good compression ratios.”. The shift amount is given by a register or literal. Charon-AXP creates a virtual Alpha environment on a standard Windows or Linux based host system. Following the purchase of Digital by Compaq the majority of the Alpha products were placed with API NetWorks, Inc. (previously Alpha Processor Inc.), a private company funded by Samsung and Compaq. The last field is the Rc field, which specifies the register which the result of a computation should be written to. With this emulator, Stromasys customers can quickly, easily, and safely phase out aging and increasingly expensive DEC hardware, and replace it with an enterprise-grade virtual Alpha environment on an industry-standard x86 platform. UMULH is used for implementing multi-precision arithmetic and division algorithms. The Tarantula research project, which most likely would have been called EV9, would have been the first Alpha processor to feature a vector unit.[4]. On the other side, HP (PA-RISC) is also reasonably close to Alpha, but these CPUs are running at significantly lower clock rates (MHz). tr:Alfa işlemcisi. The 21364 or EV7 was the first high performance processor to have an on-chip memory controller. Windows Dec Alpha Software Pixelshop v.5.0 With Pixelshop, you can create and edit existing icons (ICO), cursors (CUR) and animated cursors (ANI), in all sizes and formats, including the Windows XP Alpha … In the best possible world, Chen says you'd design an OS to “use compression algorithm X if the system is slower than K megahertz, but algorithm Y if the system is faster". Collection of status flag bits for a processor. Ghost of DEC Alpha is why Windows is rubbish at file compression . The first generation included the 21068-based AXPvme 64 and AXPvme 64LC, and the 21066-based AXPvme 160. It also defined registers that were optional, implemented only if the implementation required them. It was described at the 27th Annual International Symposium on Computer Architecture in June 2000.[9]. DEC Alpha 21164 Processor Alpha-based systems, which are used primarily for high-performance servers and workstations, can run operating systems such as Windows NT, Digital UNIX, and OpenVMS. 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