从设备的观点看，例如软盘控制器，它只能看见其控制寄存器所在的(ISA)空间的地址，不能看到系统主存。
From the point of view of the device, say the floppy disk controller, it will see only the address space that its control registers are in (ISA), and not the system memory.
从设备的观点看，例如软盘控制器，它只能看见其控制寄存器所在的(ISA)空间的地址，不能看到系统主存。
From the point of view of the device, say the floppy disk controller, it will see only the address space that its control registers are in (ISA), and not the system memory.
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