Questions tagged [arm]

ARM is a British processor manufacturer that evolved from Acorn Computers in 1985.

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How fast did the ARM-1 access memory?

The ARM-1, an early 32-bit RISC CPU, was used in the Acorn Archimedes computers, released in 1987. Its rated speed was one 32-bit instruction per cycle at 8 MHz. Typical RAM chips at that time would ...
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3answers
488 views

History of ARM Linux and FPA

ARM Linux, at least Debian was traditionally (pre eabi) built for the FPA floating point unit*. Unfortunately under old ABI it was not easily possible to mix soft-float code with FPA code. The result ...
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2answers
875 views

What sort of SBC is in the C64 Maxi?

Curious as to what model SBC this unit is using https://retrogames.biz/thec64 8 bit guys teardown says the internals are 'an ARM computer similar to a Raspberry Pi' https://youtu.be/kxx2F4ffmeE
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4answers
645 views

Why didn't the Acorn Archimedes support general purpose co-processors?

Acorn's BBC Micro series is well known for the range of add-on processors (or Second Processors) that could be connected through it's Tube interface. These included the 6502, Z80, 80186, and also the ...
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2answers
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Did any early RISC OS precursor run on the BBC Micro?

Acorn famously developed the ARM microprocessor using their existing BBC Micros internally, both to simulate the ARM and to develop for actual ARM using a Tube-connected second processor. Later, ...
2
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2answers
441 views

Differences between normal ARM7TDMI and ARM7TDMI used in GBA [closed]

I was wondering if there are any significant differences between a plain old ARM7TDMI processor and the ARM7TDMI the GBA console uses. I'm interested in learning to program a GBA or an ARM7 type ...
8
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5answers
660 views

Why isn't the approach to lower power CPUs guided by design rather than accident?

We know that the ARM chip came out of the Acorn computing initiative. In the book The One Device, we read: The low-power big thing that the ARM is most valued for today, the reason that it's on ...
25
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2answers
3k views

Was the first ARM “processor” a BBC BASIC program?

The best background I have found so far on the early development of the ARM processor at Acorn comes from this interview with Steve Furber. The interview does not mention the development of the first ...