home *** CD-ROM | disk | FTP | other *** search
-
-
- Technical Overview
-
- Key Benefits of Risc PC
- -----------------------
-
- The world's most cost-effective, efficient 32-bit RISC computers.
-
- Low cost processor upgrade strategy, protecting the users investment today
- and into the future.
-
- RISC OS - a powerful, muli-tasking operating system, tried and tested by
- millions of users.
-
- A wealth of powerful applications software from personal productivity
- tools to true multimedia. True 24-bit colour delivering 16 million colours.
-
- Low cost access to DOS and Windows applications.
-
- Lightning fast manipulation of still and moving images.
-
- High-performance multi-channel stereo sound as standard on all models.
- Modular and upgradeable computer systems that grow with users needs
-
-
- The ARM 610 processor
- ---------------------
-
- Like its predecessor the ARM 3, the ARM610 is designed by Advanced RISC
- Machines (ARM) Limited and is a 32-bit RISC CPU with a 4 KB cache. The new
- processor gives the Acorn Risc PC exceptional performance, particularly in
- full-colour modes (when fitted with VRAM). For example, it is approximately
- twice as fast as the Acorn A5000 in 16 colour VGA mode.
-
- Future upgradeability is guaranteed as faster versions of the ARM 600 and
- future generations of the ARM700 (Q4 1994) and ARM800 will be available for
- use in the Acorn RISC family for seamless migration.
-
- Risc PC can address up to 256MB of memory, and although current technology
- limits its physical memory to 128MB using commercially available DRAM, the
- Risc PC has more than enough RAM to load and manipulate the largest
- full-colour images and combine them with text, graphics, video and sound.
- Risc PC also supports up to 2MB of VRAM.
-
- Dual processor facility offers full 486 PC capability
- -----------------------------------------------------
-
- The Risc PC's open architecture makes it possible to fit a second
- processor to the computer, sharing all the memory, input and output
- facilities of the main ARM610 processor. This represents a tremendous cost
- advantage over traditional processors mounted on an expansion card, which
- often required memory to be duplicated. Any processor may be used, provided
- its card contains all necessary arbitration logic.
-
- The first of these second processors to be offered on the Risc PC will be
- a 25/33 Mhz 486SX PC card including DOS and Windows. With a PC Card fitted,
- the Risc PC will behave just like an ordinary 486 PC with Windows and a
- graphics accelerator offering SVGA video (800 by 600 with 16 million
- colours).
-
- A special Application Specific IC (ASIC) is currently being developed
- embodying all the speed dependent PC logic. Performance will be further
- enhanced by an optional 32KB or 128KB secondary cache on the processor chip,
- which will be managed by a cache controller included in the ASIC.
-
- It is expected that even higher performance PC cards, using the P24T type
- Pentium processors, will soon be introduced. Other uses of the dual
- processor capability are also being planned by independent developers.
-
- DMA Extended Bus Interface (DEBI)
- ---------------------------------
-
- The Risc PC can take two single-width expansion cards in its standard
- configuration, plus two more for every centre-section added to the system.
- The DEBI bus also supports Direct Memory Access (DMA), so data can be read
- from and written to system RAM by expansion cards, without interrupting the
- CPU.
-
- The new DEBI bus makes it possible to implement even higher performance
- expansion cards handling large amounts of data, such as video-capture and
- direct-drive printer cards, which can have substantial on-card buffer
- memory, directly addressable to the ARM processor.
-
- Acorn and multimedia
- --------------------
- Acorn has consistently been a pioneer in the development of multimedia,
- from the earliest days of the BBC Micro, with sound, colour and graphics, to
- the latest innovations in full motion video and in the natural integration
- of CD-ROM technology with computers. As described above, every Risc PC
- comes with full 24-bit colour capability; the support for up to 256MB RAM
- and 2MB of VRAM; and a large hard disk (minimum of 210MB). Stereo sound and
- video playback are also standard. An integral CD-ROM drive providing Photo
- CD support is also available as an added option. This all makes the new
- Risc PC the ideal choice for multimedia applications.
-
- The Risc PC has eight channels of stereo sound as standard and has a
- built-in speaker and stereo headphones socket. This is complemented by
- Acorn Replay - Acorn's full motion video system. A world leader, Acorn
- Replay has made it possible for thousands of users to put together
- multimedia publications on Acorn computers at low cost. Acorn Replay's
- playback software, ARPlayer, is included with every Risc PC, together with a
- number of movies demonstrating the capabilities of Acorn Replay.
-
- Acorn's heritage in multimedia means a strong base of multimedia authoring
- applications already exist. These enable the user to combine video, audio,
- text and images in hypertext-linked documents which can be designed for
- interactive training, reference and project work.
-
- Networking
- ----------
-
- The preferred means of networking is Ethernet and Acorn supports both
- thick and thin media. Additional multi-session cards will enable one or
- more protocol stacks (e.g. TCP/IP and IPX) to be run simultaneously
- regardless of the type of media. The use of industry standards enables
- Acorn users to run mixed network environments with different types of
- machines where they are running standard software.
-
- Full 24-bit colour
- ------------------
-
- The Risc PC offers a choice of up to 16 million colours and up to 1600 by
- 1200 resolution. Industry standard TIFF and JPEG 24-bit colour images can
- be loaded into the Risc PC, decompressed on the fly and displayed as RISC OS
- bit image files.
-
- Made possible by a new ARM VIDC20 video chip, a new colour picker or
- palette allows the user to work in one of the three colour modes - RGB,
- CMYK and HSV.
-
- Optional CD-ROM drive
- ---------------------
-
- The Risc PC has an empty 5.25" drive bay, ready to receive an optional
- CD-ROM, providing an integrated, neat CD-ROM solution. Both RISC OS and
- (using a PC card) DOS CD-ROMs can be used. Acorn Replay movies can be
- played from CD-ROM, and (subject to copyright) images copied from both RISC
- OS and DOS format disc, translated into sprites, edited and used in RISC OS
- applications.
-
- The optional CD-ROM drive enables the user to read Kodak Photo CD-format
- discs, while the video performance of the Risc PC ensures that none of the
- original picture quality is lost. Once displayed on the computer, PhotoCD
- images can be edited and dropped into multimedia publications.
-
- New, versatile case design
- --------------------------
-
- The Acorn Risc PC range features an innovative case design. Leading
- design house Cambridge Product Design has combined contemporary styling and
- ergonomics to produce a product that is both aesthetically pleasing and
- practical. Constructed in a high-impact-resistant plastic, which is usually
- used in the manufacture of visors and riot shields, the case is robust and
- hard wearing. To cut down electrical emissions, the inside has been metal
- sprayed.
-
- The case's modular construction makes upgrading simple as the Risc PC can
- be taken apart in seconds without any tools. The Risc PC supports an almost
- limitless range of configurations and upgrades (memory, disc drives, CD-ROM
- drives, expansion cards, network cards and even additional processors) and
- therefore this ease of access is important.
-
- The base system contains a 3.5" floppy disk drive, a hard disk (at least
- 210 MB), one vacant bay for a 5.25" device (e.g. CD-ROM), two available
- expansion slots and a space for a networking card. Each additional system
- layer, or 'slice', enables the user to add an additional 3.5" device, a
- 5.25" device and two more expansion cards. Up to six additional slices can
- be added in total (the maximum number of expansion cards per system is
- eight.) Adding extra devices or cards is achieved very simply. Cards are
- slotted directly into the back of the computer; network cards and additional
- 3.5" or 5.25" devices involve simply removing the lid and plugging in.
-
- Monitors
- --------
-
- The AKF60 Super VGA 14" monitor is included as standard with all initial
- Risc PC confirgurations. As an option, users of any of the Risc PC models
- can upgrade to an AKF85 17" monitor. The AKF85 will provide a high quality
- alternate monitor for users needing up to 1600 by 1200 resolution.
-
-
- Initial Product Configurations
-
- System Configuration RRP ex VAT
-
- Acorn Risc PC 600 2MB DRAM #1249
- 210MB hard disk
-
- Acorn Risc PC 600 4MB DRAM #1399
- 1MB VRAM
- 210MB hard disk
-
- Acorn Risc PC 600 8MB DRAM #1699
- 1MB VRAM
- 420MB hard disk
-
-
-
- _______________________________________________________________________________
-
-