[CentOS] Centos7 Annoyances
John R Pierce
pierce at hogranch.com
Mon Nov 3 18:45:42 UTC 2014
On 11/3/2014 10:32 AM, Valeri Galtsev wrote:
> So, I would just echo what you said: we hardly will see the need in 128
> bit CPUs soon. (BTW, I'm glad to hear the choice which is power of 2. As,
> in general, the length of CPU word can be anything: 17, 89, ... I'm not
> mentioning 1 which is used in calculators, as 1_is_ power of 2;-)
I don't think any computer architectures have used word sizes other than
a power of 2 multiple of bits in quite a long time, like since the
1960s. the DECsystem 10 and 20 were 36 bit word machines. The PDP8
was a 12 bit architecture. there are some low end embedded processors
that are 4 bit (but thats a power of 2, also) but virtually everything
resembling general purpose computing equipment in use today is
8/16/32/64 bits.
note I'm speaking of data size, I know there are numerous 'Harvard'
architecture (separate code and data space) embedded machines with odd
instruction word sizes. Even most of these use 4/8/16 word sizes.
--
john r pierce 37N 122W
somewhere on the middle of the left coast
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