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The RiscPC (stylised with a half-space〔(【引用サイトリンク】 title=RISC OS FAQ Guidelines )〕 as , also referred to as and codenamed Medusa) was Acorn Computers's next generation RISC OS/Acorn RISC Machine computer, launched on 15 April 1994,〔 which superseded the Acorn Archimedes. The ''Acorn PC card'' and software allows PC compatible software to be run. Like the Archimedes, the RiscPC continued the practice of having the RISC OS operating system in a ROM module. RiscPC augmented the ROM-based core OS with a disk-based directory structure containing configuration information, and some applications which had previously been kept in ROM. At the 1996 BETT Educational Computing & Technology Awards, the machine was awarded ''Gold'' in the hardware category. == Specifications and technical details == *Memory type: Two 72pin FPM SIMM slots, supporting a maximum memory size of 256 MiB. *Video subsystem: VIDC20 controller, with optional dual-port VRAM up to 2 MiB. *Expansion: Eurocard-sized Podule support in common with Archimedes-series machines. The RiscPC also offers DMA support in the first two podules on the bus. Third parties produced similar cards. *Operating system: RISC OS, stored in 4MiB ROM, supplemented by disc based components. * *Fitted as standard: * * *RISC OS 3.50 (RiscPC 600) * * *RISC OS 3.60 (RiscPC 700) * * *RISC OS 3.70 (StrongARM RiscPC) * * *RISC OS 3.71 (StrongARM RiscPC J233) * * *RISC OS 4.03 (Kinetic RiscPC) * *RISC OS 4, RISC OS Select, RISC OS Adjust and RISC OS 6 are available from RISCOS Ltd as a replacement for the Acorn-implemented versions. * *RISC OS 5 from RISC OS Open with the CPU running in 32 bit mode * *Linux — no longer supported * *NetBSD *Case: Designed by industrial designer Allen Boothroyd of Cambridge Product Design (designer of the BBC Micro case). Custom plastic-based design with a 'slice' feature which allows extra case modules to be added to increase internal expansion space. Each slice adds 2 podule bays at the rear, and two drive bays (one 3.5 inch, one 5.25 inch) at the front, covered by a retractable flap to hide cosmetic inconsistencies in hue. Some slices were internally sprayed with nickel paint to meet electromagnetic and radio emissions regulations. *CD-ROM drive: Optional extra, offering limited compatibility with multimedia PC CD-ROMs *Ports: RS-232 Serial, Parallel, PS/2 keyboard, Acorn mouse, headphone audio out, DE15 VGA, network (optional). *CPU: Dual-processor slots, one host processor and one guest processor. :Host Processors : *ARM610 at 30 MHz or 33 MHz : *ARM710 at 40 MHz : *StrongARM at 203 MHz, 236 MHz or 300 MHz : *Additionally prototypes of 33 MHz ARM700 and 55 MHzARM810 processors were developed by Acorn, but not released. :Guest Processors : *486 and 586-based co-processors at up to 133 MHz. These ''PC cards'' and software allows PC compatible software to be run. : *DSP chips (third party) were also available :Additional configurations : *Hydra multi-processor development system from Simtec. This allowed an extra four ARM6 or ARM7 CPU cards. The Hydra add-on added multiprocessor functionality to the RiscPC with multiple Acorn ARM610 processors and the addition of the x86 Co-processor card. : *Dimensions: 117 (182 two centre-sections) × 355 × 384 mm (H×W×D). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「RiscPC」の詳細全文を読む スポンサード リンク
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