题目内容

The special function registers can be referred to by their hex addresses or by their register names. ( )

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Instruction “MOV C, 30H” is a valid 8051 instruction. ( )

In register indirect addressing, only register R0 and R1 are available for use to hold the address of the data. ( )

8051 does not provide the instruction for subtraction without borrow. ( )

PUSH and POP instructions only support direct addressing mode. ( )