Compared with indirect addressing mode，the advantage of register indirect addressing mode is________.
A. Large address space
B. Multiplememory reference
C. Limit address space
D. Less memory access
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Inbase-register addressing mode, the address of operand is equal to__________.
A. The content of base-register plus displacement
B. The content of index-register plus displacement
C. The content of program counter plus displacement
D. The content of AC plus displacement
The address of the top of stack is stored in _________________.
A. PC
B. Accumulator
C. SP
D. Base Register
Which is not a feature of Pentium .
A. complex and flex addressing
B. abundant instruction set
C. simple format and fixed instruction length
D. strong support to high language
In an instruction, the number of addresses is 2, one address does double duty of_________.
A. a result and the address of next instruction
B. an operand and a result
C. an operand and the address of next instruction
D. two closed operands
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