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| 2 FEB 2003 at 12:48am |
CarlaJourneyman
Posts : 836
Joined: 12 JAN 2003
Status : Online | Oh, no...a "techie" trivia....Is Michal over here? ???
[b][center]Aut inveniam viam aut faciam[/b][/center]
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| 2 FEB 2003 at 12:51am |
InlandAZGuild Master
Posts : 5586
Joined: 4 MAY 2007
Status : Offline | Hehehe - well, you did ask me to post a question...
I'm quite sure MichalN (as well as a few of the others) knows the answer. :
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| 2 FEB 2003 at 12:55am |
MichalNGrand Inquisitor
Posts : 7058
Joined: 14 SEP 2003
Status : Online | Originally Posted By Malia G (2 FEB 2003 12:48am)
Oh, no...a "techie" trivia....Is Michal over here?
Yeah, but my lips are sealed ( :-X ).
It's not a techie trivia as much as math trivia really... simple powers of two.
I forgot my sig.
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| 2 FEB 2003 at 1:07am |
InlandAZGuild Master
Posts : 5586
Joined: 4 MAY 2007
Status : Offline | Oh my, Binary Digit stuff... zeros and ones... Who'd of thought...
You're correct simple math will do...
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| 2 FEB 2003 at 1:09am |
MichalNGrand Inquisitor
Posts : 7058
Joined: 14 SEP 2003
Status : Online | My lips became mysteriously unstuck... I wonder what happened there.
Malia: One bit of information holds one of two logical values, 0/1 or yes/no. 1-bit value could therefore encompass two bytes of address space (0, 1). A 2-bit value can address twice as much (0, 1, 2, 3). A 3-bit value can address twice as much again and so on.
So if you figure out the relationship between number of bits and number of possible combinations they can hold (in terms of powers of two - that's quite simple), you'll have the answer. If you need more hints, just ask.
I forgot my sig.
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| 2 FEB 2003 at 1:37am |
CarlaJourneyman
Posts : 836
Joined: 12 JAN 2003
Status : Online | give me a minute, I'm having a delicious ice-cream...I'm focus on it.
I'll be right back
Thanks (?) Michal
[b][center]Aut inveniam viam aut faciam[/b][/center]
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| 2 FEB 2003 at 1:38am |
InlandAZGuild Master
Posts : 5586
Joined: 4 MAY 2007
Status : Offline | Heheheh - You used the P word.. Shame on you...
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| 2 FEB 2003 at 1:48am |
CarlaJourneyman
Posts : 836
Joined: 12 JAN 2003
Status : Online | P P P P P P P P P P
And I'm not :-[ at all!!! (I would if this was a math forum...)
[b][center]Aut inveniam viam aut faciam[/b][/center]
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| 2 FEB 2003 at 1:49am |
MichalNGrand Inquisitor
Posts : 7058
Joined: 14 SEP 2003
Status : Online | Originally Posted By Malia G (2 FEB 2003 1:37am)
give me a minute, I'm having a delicious ice-cream...I'm focus on it.
I want to be an ice cream... uhh, what? Sorry, just daydreaming
Thanks (?) Michal
You're most welcome(?) Malia!
I forgot my sig.
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| 2 FEB 2003 at 2:08am |
CarlaJourneyman
Posts : 836
Joined: 12 JAN 2003
Status : Online | A 64-bit CPU can address 2 to the power of 64 bytes of memory. (1.8447E19 saysmy calculator).
A 32 bit-CPU can address 2 to the power of 32 bytes....
I'm exhausted....
Thanks for the hint, Michal
[b][center]Aut inveniam viam aut faciam[/b][/center]
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| 2 FEB 2003 at 5:12pm |
InlandAZGuild Master
Posts : 5586
Joined: 4 MAY 2007
Status : Offline | E-notation...
Yes, that's the way it is done... Very good Malia
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| 2 FEB 2003 at 8:24pm |
CarlaJourneyman
Posts : 836
Joined: 12 JAN 2003
Status : Online | I'm so happy now
And thanks for the "exclusive" trivia, In... :-*
[b][center]Aut inveniam viam aut faciam[/b][/center]
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| 2 FEB 2003 at 8:38pm |
MichalNGrand Inquisitor
Posts : 7058
Joined: 14 SEP 2003
Status : Online | Actually - to get back to the techie talk - the theoretical answers are easy (what Malia said) but in practice the issues are not so clear cut.
I don't know of any 8-bit CPU that could only address 256 bytes
of memory (typically it was 64KB). Likewise 16-bit CPUs typically address more than 64KB. The 8086 can address 1MB, 286 16MB physical memory.
A 386DX has 32 address pins so it can address 4GB physically. Internally however it works with 48-bit pointers and can address some terabytes of virtual memory. Some Intel 32-bit CPUs also have 36 address pins and can physically address more than 4GB RAM, even though they're still only 32-bit CPUs.
On the other side of the spectrum I can easily imagine that not all 64-bit CPUs actually have 64 address pins, because a memory subsystem to keep all of them occupied would be prohibitively expensive.
I forgot my sig.
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| 2 FEB 2003 at 9:00pm |
InlandAZGuild Master
Posts : 5586
Joined: 4 MAY 2007
Status : Offline | You can also include the OS as a limiting factor - In Windows 9x, all 32 bit VM's can address no more than 2 Gigs of Physical and 4 Gigs of Virtual RAM. (this is according to the documentation).
Now, having said that - Why is it that the MSKB, which documents problems, indicates that a PC with large amounts of physical RAM (in excess of 1 GIG) will in all probability encounter errors?
Aren't PC's fun...
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| 2 FEB 2003 at 10:19pm |
MichalNGrand Inquisitor
Posts : 7058
Joined: 14 SEP 2003
Status : Online | Originally Posted By InlandAZ (2 FEB 2003 8:59pm)
Aren't PC's fun...
That depends on one's definition of "fun"
I forgot my sig.
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