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Guest
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 Posted:
Sat Oct 29, 2005 8:15 am Post subject:
Difference between core and ALU |
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I am a novice. What is the difference between a core, an ALU and a
functional unit? I guess a core consists of several functional units,
but is ALU=core or ALU=FU? |
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Guest
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| Posted:
Sat Oct 29, 2005 9:32 pm Post subject:
Re: Difference between core and ALU |
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hzmonte@hotmail.com wrote:
| Quote: | I am a novice. What is the difference between a core, an ALU and a
functional unit? I guess a core consists of several functional units,
but is ALU=core or ALU=FU?
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ALU = Arithmetic/Logic Unit = a specific type of FU.
A core contains FUs (which only handle the actual
execution of instructions); instruction decode logi;,
issue buffers, completion logic, and other Out-of-Order
functionality (if an OoO implementation); registers;
and (in most recent considerations) any 1st level cache.
Paul A. Clayton |
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John Savard
Guest
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| Posted:
Mon Oct 31, 2005 1:15 am Post subject:
Re: Difference between core and ALU |
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On 28 Oct 2005 22:50:08 -0700, hzmonte@hotmail.com wrote, in part:
| Quote: | I am a novice. What is the difference between a core, an ALU and a
functional unit? I guess a core consists of several functional units,
but is ALU=core or ALU=FU?
|
A core is a whole other CPU. In addition to an ALU, therefore, it has to
fetch and decode instructions, and fetch and store data.
An ALU is the part of the computer that does the actual arithmetic.
John Savard
http://home.ecn.ab.ca/~jsavard/index.html
http://www.quadibloc.com/index.html
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