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Dos - user program munter current tongues for a modem without control
Dos - user program munter current tongues for a modem without control
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机译：Dos-用户程序无需控制即可控制调制解调器的当前语言
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摘要
DOS application programs are accommodated when using a controllerless modem by providing a virtual device driver. The virtual device driver emulates UART to UART communications and handles interrupts by the DOS applications and by a hardware port managed by the controllerless modem. In one implementation, the virtual device driver shares a communications interface in common with 32-bit applications. In a communication system environment, DOS applications can participate in modem to modem communications with remote DTEs and with other devices using the services of the virtual device driver.
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