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- 4M x 8 = L x W
- BYTE-ADDRESSABLE:
- 4M = 4 x 2^20
- = 2^2 x 2^20
- = 2^22
- = 22 bits
- WORD-ADDRESSABLE:
- 16-bit word size:
- = 22 - log 2 (16/8)
- = 22 - log 2 (2)
- = 22 - 1
- = 21 bits
- 32-bit word size:
- = 22 - log 2 (32/8)
- = 22 - log 2 (4)
- = 22 - 2
- = 20 bits
- Formula: Byte-addressable bits - log 2 (word size/Width)
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