| EPP协议在车载地震仪中的设计与应用 |
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| 引用本文： | 李明亮,王广祥,李聚光.EPP协议在车载地震仪中的设计与应用[J].河北工业科技,2002,19(4):31-33,43. |
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| 作者姓名： | 李明亮 王广祥 李聚光 |
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| 作者单位： | 石家庄经济学院信息工程系,河北石家庄,050031 |
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| 摘 要： | 针对并行口设备开发的趋势及特点 ,详细介绍了 EPP协议的产生、特点及时序 ;并结合科研项目“ES2 42 0地震仪改造”提出了用 EPP协议仿 Intel 80 86系统接口的详细设计方案 ,该接口由读写逻辑生成电路、地址锁存器及译码器、仿 Intel 80 86总线及一些逻辑延时电路组成。并给出了电路框图及 Windows3 .x/95/98编程。经扩展后总线的双向通信速度为 850 KB/s与 ISA总线的速度相当。
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| 关 键 词： | EPP标准 仿8086系统 接口电路 接口编程 |
| 文章编号： | 1008-1534(2002)04-0031-03 |
The Design and Application of EPP Protocol in the Earthquake Instrument |
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| LI Ming liang,WANG Guang xiang,LI Ju guang.The Design and Application of EPP Protocol in the Earthquake Instrument[J].Hebei Journal of Industrial Science & Technology,2002,19(4):31-33,43. |
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| Authors: | LI Ming liang WANG Guang xiang LI Ju guang |
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| Abstract: | According to parallel device development's character and trend,this article introduces the EPP protocol's creation,character and order in detail,and brings forward a particular design project using the EPP protocol,resembling the 8086 system interface and combining the scientific research project ES2420 earthquake apparatus rebuilding.This interface is composed of read write logic circuit,address latch and code translate device,resembles the 8086 system and some logic time delay circuit and brings out the circuit pictures and the programming of Windows 3.x/95/98. The Double direction communicating speed of extended bus is 850 KB/s,which is the same as that of the ISA bus. |
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| Keywords: | the standard of EPP resemble the 8086 system the interface circuit interface programming |
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