Linked by Thom Holwerda on Thu 9th Sep 2010 13:00 UTC
Hardware, Embedded Systems So, we have Intel and AMD. These guys are doing pretty well in laptops, servers, and of course desktops, but when it comes to mobile devices, they've so far been unable to adapt the x86 architecture to the stricter requirements that come with those devices. ARM, on the other hand, pretty much owns this market at this point. And you know what? It's time for Intel and AMD to get worried - really worried. ARM has just announced its Cortex-A15 MPCore chips - which will reach 2.5Ghz in quad-core configurations.
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64bit ?
by bnolsen on Thu 9th Sep 2010 17:20 UTC
bnolsen
Member since:
2006-01-06

I don't see mention of 64bit addressing. If this is a 32bit processor only it's DOA for general processing. High capacity ram is dirt cheap, why not be allowed to use it?

Reply Score: 2

RE: 64bit ?
by Anachronda on Thu 9th Sep 2010 17:54 in reply to "64bit ?"
Anachronda Member since:
2007-04-18

They've got an MMU extension that does 40-bit physical addresses. So it's a 32-bit virtual address with 40-bit physical addresses.

Reply Parent Score: 1

RE[2]: 64bit ?
by bnolsen on Thu 9th Sep 2010 18:49 in reply to "RE: 64bit ?"
bnolsen Member since:
2006-01-06

Interesting...this core i7 I have here is 48 bits virtual and 36 bits physical, a 12 core phenom shows 48/48.

By extending the physical and not the virtual only solves a small part of the problem. It still means a lot of code I have won't run on that a-15.

Edited 2010-09-09 18:51 UTC

Reply Parent Score: 2

RE[2]: 64bit ?
by phoenix on Fri 10th Sep 2010 00:44 in reply to "RE: 64bit ?"
phoenix Member since:
2005-07-11

Sounds like Intel's PAE extensions. We all know how "wonderfully" that worked out.

Reply Parent Score: 2

RE: 64bit ?
by lemur2 on Fri 10th Sep 2010 01:51 in reply to "64bit ?"
lemur2 Member since:
2007-02-17

I don't see mention of 64bit addressing. If this is a 32bit processor only it's DOA for general processing. High capacity ram is dirt cheap, why not be allowed to use it?


http://dir.filewatcher.com/d/Fedora/i686/System%20Environment/K...

Reply Parent Score: 2