In April 1994, Acorn announced the release of the second generation of ARM machines � the Acorn RISC PC 600. Code named the Medusa project, this was set to replace the then ailing flagship A5000machine.
As the name suggests, one of the main features of this computer was that it could run both Acorn and IBM-PC software side by side. This was achieved by a second CPU slot that could accept a daughter board with a PC CPU, such as a 486 or 586. This second processor then had shared access with the primary CPU to all the system resources. No more CPU intensive software PC emulation required!
As well as the second processor, other major enhancements included an updated video controller with the option for dedicated video RAM. The graphics chip in previous Archimedes range machines had shared the system memory with the rest of the computer which often proved to be a bottle neck without true DMA. Now the video controller could have video memory of it뭩 own, removing the bottle neck.
The system data bus was doubled in size to 32bits wide, and the MEMU and IOC chips were combined to create the IOMD20. This resulted in much better overall I/O, yet another bottle neck removed from previous machines. The system memory was also upgraded to a maximum of 256MB and the memory bus was designed to use the more widely available EDO SIMM뭩.
A unique feature of the RISC PC was its case. This came in the form of the base holding the motherboard and power supply, a mid section for mounting one 3.5" device, one 5.25" device and two single width expansion cards, and then a lid. The magic was that you could add up to 8 slices at any time, giving you a very easily expandable computer, and all held together with clips and springs negating the need for a screwdriver. Very neat.
There were 2 other Acorn RISC PC's. The RISC PC 700 was released July 1995 and the RISC PC-2 was much publicised by Acorn and then dramatically cancelled at the last minute.
|BUILT IN LANGUAGE||BBC Basic|
|KEYBOARD||Full 102 Key PS/2 PC style|
|CO-PROCESSOR||Choice of IBM-PC CPU뭩 including 486/586|
|RAM||4 MB (Up to 256 MB)|
|ROM||4 MB containing most of the OS|
|GRAPHIC MODES||Numerous - 1280 x 1024 at 256 colours, 800 x 600 16M colours|
|COLORS||Full 24bit 16M colours (video memory permiting)|
|SOUND||16bit stereo 8 voice synthesiser (PC sound blaster compatible)|
|SIZE / WEIGHT||35.5 (W) x 38.5 (D) x 12 (H) cm|
|I/O PORTS||Parallel, RS232, 2 x PS/2, VGA, 3.5mm sound jack, single width expansion slots (two per 몊lice�)|
|BUILT IN MEDIA||3.5'' floppy disk, 3.5'' IDE hard disk, CD-ROM|
|OS||RISC OS 3.5 (mainly in ROM, aditional resources on hard disk)|
|POWER SUPPLY||Built-in switching power supply unit|
|PRICE||From around �1200|
IMLAC  PDS-1The Imlac PDS-1 is a graphical minicomputer made by Imlac Corporation (founded in 1968) of Needham, Massachusetts. The PDS-1 debuted in 1970 and is considered to be the predecessor of all later graphical minicomputers and modern computer wo...Date2017.12.20 Views13526
TOSHIBA  T-200Two models were available: the Toshiba T200 C-5 with only one floppy disk unit (250 KB) and a hard disk (5 MB), and the T200 C-20 with a double floppy disk unit, one hard disk (10 MB) and one streamer (10 MB). It was possible to connect up ...Date2017.07.20 Views9653
TERTA  Tap34TAP 34 is a self design of Terta company from Hungary. Primarily it was designed as a terminal for big computer systems but it was also able to process data alone. The main integrated circuits were assembled in the USSR and in Hungary by Tu...Date2016.10.24 Views11607
금성  FC-100http://www.mydiyworld.net/?p=1074 http://tpholic.com/xe/ibmboard2/7060017 1982년 발매된 금성사의 첫 번째 8비트 개인용 컴퓨터. '교육용 컴퓨터'라는 활용 방향을 염두에 두고 만들어졌다. 산요전기의 8비트 컴퓨터 PHC-25와 부분적인 호환성을...Date2016.05.14 Views10916
Vector Graphics  Vector 1The Vector 1 was a clone of the ALTAIR 8800 based on the common S-100 bus structure and the Intel 8080A microprocessor. It was sold under kit or assembled versions. Vector Graphics said it offered a stronger cabinet and a well-designed powe...Date2016.05.14 Views10217
ACT  Apricot PCAfter having imported the Victor Sirius for years in the UK, ACT produced its own computer largely inspired by the Sirius : the Apricot PC. It was supposed to be transportable as there is a handle on the main-unit ! If you really want to mo...Date2016.03.31 Views8198
TRIUMPH ADLER  TA-1600TRIUMPH ADLER TA-1600 The TA 1600 system was introduced in 1983 at the CeBIT (which was only a part of the "Hannover-Messe" by that time). TA showed a few sample applications and the 1600 family in general. Triumph Adler's hardware inclu...Date2016.03.29 Views9365
ACORN  Risc PCIn April 1994, Acorn announced the release of the second generation of ARM machines � the Acorn RISC PC 600. Code named the Medusa project, this was set to replace the then ailing flagship A5000machine. As the name suggests, one of the m...Date2016.03.03 Views8322
ACC  8000We have little information about this computer which was manufactured and exported by Asia Commercial Co. Ltd, a company based in Hong-Kong. The ACC-8000 was one of the rare machine of the time to be equipped we three microprocessors: a MOS...Date2016.02.16 Views9325
ACORN  BBC Model A / B / B+The Acorn BBC model A was the successor of the Acorn Atom and its first name was Acorn Proton. It was a very popular computer in the UK and was widely used in schools, but it didn't have great success elsewhere (even though it did have ...Date2015.12.29 Views9690
ACORN  ATOMThe Acorn Atom was the ancestor of the BBC computers series. It was sold in kit or ready-assembled versions. The great advantage of the Atom compared to its competitors (TRS-80 & PET), was its high resolution capabilities (256 x 192) wh...Date2015.12.10 Views11294
UNISYS  IconThe ICON workstation and LEXICON file server were originally designed by Cemcorp, the Canadian Educational Microprocessor Corporation, specifically for use in Canadian schools. They were first produced by Burroughs then took the name of Uni...Date2015.11.22 Views8889
PCC  PCC 2000PCC 2000 is a professional computer released in 1978. It was designed in 1978 by Pertec, the company which merged with MITS by the end of 1976. The PCC is conceived as a monobloc machine, where the display and two 8" floppy disk drives are ...Date2015.10.21 Views8642
Fujitsu  FM 7Fujitsu was (and still is) japan's leading electronics company. This computer was the succesor of theFM-8 itself first member of the Fujitsu FM (for "Fujitsu Micro") range of computers, extending from hobbyist home computers up to 16-bi...Date2015.10.21 Views8331
Fujitsu  FM 77 AVThe FM 77 AV was an impressive system in 1985. It's a good example of what was developped in Japan and we never heard of in the rest of the world. The system has great audio and video features, hence the AV for "Audio and Video". It can...Date2015.10.17 Views7885
Fujitsu  FM-16sThe Micro 16s was designed to be a powerful package of hardware and software in a professional business system. It offered a unique architectural design for the time: interchangeable microprocessors and thus operating systems. In fact most ...Date2015.10.12 Views8781