COM (硬件接口)

COM (通信端口[1])是最早的但仍极为常用的PC兼容机串口,不仅指物理端口,也指虚拟端口,如蓝牙USB创建的串口。

历史

1980年代与1990年代,大部分兼容PC机有一或两个COM口。2014年后,大部分PC机不再有COM口。有些厂商提供USB到串口的转换卡。

I/O 地址

典型地址为:

  • COM1: I/O port 0x3F8, IRQ 4
  • COM2: I/O port 0x2F8, IRQ 3
  • COM3: I/O port 0x3E8, IRQ 4
  • COM4: I/O port 0x2E8, IRQ 3

参见


参考文献

  1. . IBM Lotus Domino and Notes Information Center. [17 September 2013]. (原始内容存档于2013-09-17).
  • Serial Port Complete: COM Ports, USB Virtual COM Ports, and Ports for Embedded Systems; 2nd Edition; Jan Axelson; Lakeview Research; 380 pages; 2007; ISBN 978-1-931-44806-2.
  • Java Simple Serial Connector页面存档备份,存于 - library for work with serial ports from Java. Support Windows: Win98-Win8(32-bit and 64-bit), Linux(x86, x86-64, ARM(soft and hard float)), Mac OS X: 10.5-10.8(x86, x86-64, PPC and PPC64), Solaris OS(x86, x86-64).
  • How to Interface Hardware in COM ports页面存档备份,存于
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