| 有关微机网以及电话网的协议分析及改进 |
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| 引用本文： | 贾宁波,周虹,王敏,袁强.有关微机网以及电话网的协议分析及改进[J].佳木斯大学学报,1997(1). |
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| 作者姓名： | 贾宁波 周虹 王敏 袁强 |
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| 作者单位： | 佳木斯工学院!154007 |
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| 摘 要： | 对微机通信中有关文件传输中的常用协议，即 XMODEM协议，YMODEM协议，ZMODEM协议和 KERMIT协议等进行了较详细的分析和比较．并对通用性好，性能较优越的日趋国际标准的 KERMIT协议，提出了一种改进方案，使其在文件传输中断时能够从中断点处开始恢复传输，保证无差错无重复地进行通讯．并且在两台直接相连的386微机上进行了以 C语言编程的模拟实验。程序采用直接操纵串行口，即对 UAR－T8250及PIC8295直接编程的方法，使文件的传输效率得以进一步提高．
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| 关 键 词： | XMODEM协议 KERMIT协议 调整制解调整器 |
THE PROTOCOL ANALYSIS AND IMPROVEMENT ABOUT MICROCOMPUTER NET AND TELEPHONE NET |
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| Jia Yuan, Zhao Hong ,Wang Min, Yuan Qiang.THE PROTOCOL ANALYSIS AND IMPROVEMENT ABOUT MICROCOMPUTER NET AND TELEPHONE NET[J].Journal of Jiamusi University(Natural Science Edition),1997(1). |
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| Authors: | Jia Yuan Zhao Hong Wang Min Yuan Qiang |
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| Institution: | Jiamusi Institate of Technology Electric Engineering Department 154007 |
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| Abstract: | In this paper several file transfer protocol, Xmodem, Ymodem,Zmodem and Kermit are analysised and compared detailedly. An enhanced proposal isput for ward for hermit which has better compatibility , performance and is near worldwidely spread. It assures to repeatly comunication without fault when file transfer recovers from break point. An experiment program is carried out between two 386 PCs inC language. the result has proved the above these, In the program, it is to control serialport communication directly, the way that programs UART8250 and PIC8259 directly,which improves file reansfer rate once more |
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| Keywords: | xmodem protocol kermit protocol modem |
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