Acorn - 3000 series and up  Acorn A7000

The Acorn A7000

The Acorn A7000 was launched in 1995 as a successor to the Acorn A5000 and featured the new ARM7500 integrated system on a chip, consisting of an ARM CPU, MMU and other components. The A7000 architecture resembled that of the Risc PC to some extent, but it was especially designed to suppor the education market and expected to have at least a seven year life-span.

The A7000, running at 32MHz, had comparable performance ratings to Intel 486DX2 systems running at 66MHz. The computer shipped with 2, 4, or 8MByte of RAM hard soldered to the motherboard, and a single expansion slot to increase memory to 128 MByte.

In 1997 Acorn launched an improved version of the A7000, the A7000+. It had a new ARM7500FE system on a chip that was floating point capable clocking in at 48MHz, and was standard equipped with 8MByte of RAM, expandable to 128MByte.

Acorn Archimedes Computers

The Acorn Archimedes computer was the commercially available computer to use the RISC (Reduced Instruction Set CPU) architecture. The first models were launched in 1987, and Acorn developed updated models of the machines until the early 1990's. The CPU in the Acorn machines is the ARM chip, which stands for Acorn RISC Machine. ARM Chips are still used today, one popular example is the iPhone.

Arthur Operating System

The Acorn Archimedes computers were initially shipped with the Arthur OS, but could be upgraded to RISC OS, by replacing the ROM chips that contained the operating system. Because of these ROMs, the computer would boot immediatly into it's GUI, similar to the Atari ST line of computers. This gave them a significant advantage over PC's that loaded the operating system from disk.

The early Archimedes computers used the Arthur operating system, which was replaced in 1989 with RISC OS. RISC-OS featured co-operative multitasking, task management, solid window manipulation, adaptive rendering of bitmaps and coloring, and above all stability that the Arthur OS lacked. New applications quickly started to take advantage of the RISC-OS resulting in mature software such as Acorn Desktop Publisher, and even a PC Emulator.

By Acorn CPU ARM7500 (ARM7 CPU, VIDC20, IOMD) Memory 2MB RAM, 136MB Max Sound 16 bit digital Stereo integrated sound. Sprites 1 hardware sprite Display VGA & SVGA, 1280x1024 24BPP. Display Chip VIDC20 Video Display Processor Sound Chip Integrated CPU Class ARM Developed by Acorn
Related Systems
Acorn BBC / Archimedes
Acorn  A7000
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