Address Lines question

a_n_d_y15

Gawd
Joined
Nov 21, 2001
Messages
546
Hello, I have a question that I dont know how to tackle.....
Yes, it is part of an assignment, and i'm not asking for an answer, im asking for some help on where to start question b.

any replys are appreciated.

here's the question:

The Intel x86 architecture has a byte-addressable memory space of 64 GB.

a. Determine the address space in bits.

b. If the system bus moves 64 data bits/cycle, determine the minimum number address lines required to support the above specification.

a) 64*1024*1024*1024 = 6.87E10 bytes

2^x = 6.87E10 bytes
log(2^x) = log(6.87E10)
xlog(2) = log(6.87E10)
x = log(6.87E10) / log(2)
x = 36

2^36 = 6.87E10 bytes

Address space in bits = 36

b) ?
 
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