Q2-B) Answer the followings: I. Identify the addressing mode for Two of the following instructions: SBB AX,SI MOV...

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Electrical Engineering

Q2-B) Answer the followings:
I. Identify the addressing mode for Two of the followinginstructions:
SBB AX,SI MOV [BX]+1234H,AL XCHG DL,[BP+20H]
II. True or False and why correct the false one:
1- A 20-bit address bus sports 20,000 memory addresses
2-A machine cycle refers to fetch an instruction
3-A memory with 256 addresses has 256 address lines

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