Intel® ISA Extensions
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Data Bus

logicman112
Beginner
‎08-03-2010 01:44 AM
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If the following one byte instruction is executed for a IA-32 processor in 32 bit protected mode:

MOV [ebx], al

What will be the value of D63 to D8 physically?

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neni
New Contributor II
‎08-04-2010 10:24 AM
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i assume you are interested in what will be the physical address you will see on the bus. and the answer is, if you see something on the bus (depends on cacheability of the address) it will be based on the page table setting for the virtual address value in ebx
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Anthony_B_Intel
Employee
‎08-06-2010 12:08 PM
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The value of theupper 3 bytes of the location referenced by ebx will be unaffected by the above instruction.
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