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在Intel86/300系列微机系统中通过主机板上的并行口(Centronix)接绘图仪(例如SR6602)是比较方便的,但是打印机却不能同时工作了。把绘图仪通过串行传输口(RS232)连接到Intel86/300系列微机系统中,若能让绘图仪置于iRMX86操作系统管理之下,把绘图仪作为一个象打印机一样的物理设备,将是用户所希望的。这样,用户可十分方便的在高级语言一级用打开文件的命令将绘图仪作为一个文件连接成逻辑部件,直接向其输出绘图命令。这样做的优点是用户根本不必对串行传输口进行初始化工作,
It is convenient to connect a plotter (such as an SR6602) with a Centronix motherboard on the Intel86 / 300 series computer system, but the printer can not work at the same time. Connect the plotter to the Intel86 / 300 series microcomputer system via the serial port (RS232). If you place the plotter under iRMX86 operating system management, use the plotter as a printer-like physical device that will be the user Hope In this way, it is very convenient for the user to connect the plotter as a file at a high-level language with a command of opening a file to be a logical unit to output a drawing command directly thereto. The advantage of doing so is that users do not have to initialize the serial transmission port at all,