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Old 03-03-2005, 12:20 AM   #1
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36 bit memory address

How much memory can a 36-bit memory address register(MAR) 'address'?

What's the difference between MAR and MDR?
Old 03-03-2005, 12:32 AM   #2
Registered: Jul 2004
Location: louisiana
Distribution: fedora 4/kubuntu
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Hope this isn't your HW question

I hope I am not answering a Home Work question. 36 bits means 2 to the 36th power. Why 36? Most often 32 bits are used in CPU arch. 36 is not a power of 2.
MAR = Memory address register (used to store address of memory location to be read or written)
MDR = Memory Data Register (used to store the data returned from the address in the MAR)
Old 03-03-2005, 01:45 AM   #3
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Re: Hope this isn't your HW question

Thanks. I was just wondering the exact same thing why 36 and not 32..guess I need to be more attentive in class.


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