| 1. | One port of the pio is dedicated to the keyboard interface .
输入输出过程的一个端口用作键盘接口。 |
| 2. | In practice, some more instructions may be needed, because of the specific structure of the pio used .
实际上由于所用PIO的具体结构，可能需要更多的指令。 |
| 3. | Pio programmed input output
可编程输入输出模式 |
| 4. | Pio programmed input output
可编程输入输出模式 |
| 5. | Pio parallel input output
并行输入输出 |
| 6. | Mode 4 pio
Pio第四模式 |
| 7. | However in view of the very low cost of pios , this can be indeed a very inexpensive alternative
然而由于pio价格低廉，故这种方法是非常经济的。 |
| 8. | In practice , some more instructions may be needed , because of the specific structure of the pio used
实际上由于所用pio的具体结构，可能需要更多的指令。 |
| 9. | I ' ll present two simple driver sample programs as well : one for dealing with a pio device and one for dealing with a bus - mastering dma device
我还给出了两个简单的驱动程序例子：一个用于pio设备，一个用于总线主控的dma设备。 |
