Acorn Risc PC Manual de usuario descargar pdf (Pagina 3)

Processor

T

he RiscPC offers the use of several

processors.

T

he primary processor is always an

ARM processor (Advanced Risc

Machine). ARM processors have

been specially designed as RISC pro-

cessors (Reduced Instruction Set

Computers), enabling exceptionally fast

processing. Standard ARM clock

speed is 75 MHz, while StrongARM

clock speed is 200 or 233 MHz. This

may seem a little sluggish today, but it

amounts to as many as 140 Mips or

more. 600 MHz and 750 Mips ARM

processors are currently under devel-

opment. In case you are wondering if

the fan isn’t working, ARM processors

require no cooling, and very little en-

ergy indeed. Which is why you may

find these chips in Psion palmtops and

many mobile phones. ARM operating

systems are of course RISC OS, but

also UNIX (Risc BSD) and Linux

A

secondary ARM processor may be

used, or a PC-card if you want to

use PC applications. So DOS,

Microsoft Windows, BeOS, Unix, Linux,

anything goes. The processor makes

full use of the internal memory, devices

that function with RISC OS as well. In

this way all options

like telebanking,

trying out alternat-

ive operating sys-

tems, operating

programmes that

you use at your

workplace or run-

ning PC-oriented

CDs and CDROMs

are open.

The casing

T

he RiscPC

motherboard is

situated at the

bottom of the cas-

ing, which has

3

HARDWARE

The RiscPC

1 2 3 4 5 6 7 8 ... 15 16

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