术语 | autodecrement mode |
释义 | autodecrement mode 自减方式 In autodecrement mode addressing, the contents of the selected register are decremented and the result is used as the address of the actual operand of the instruction. The contents of the register are decremented according to the data type context of the register∶1 for byte; 2 for word; 4 for longword and F-floating; 8 for quadword, G-floating and D-floating; and 16 for octaword and H-floating. 在自减方式寻址时,所选寄存器的内容减小并作为指令的实际操作数的地址。按照寄存 器数据类型来减小寄存器的内容:对字节减1,对字减2,对长字及F浮点减4,对4字长减8,对G 浮点及D浮点也减8,对8字长及H浮点减16。 |
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