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本文研制了一种微机上 Ｘ． ２５智能适配卡的软硬件设计，数据和控制信息可在微机主存和适配卡间直接并行流动，接口提供多个高速通道，速率高达６４ｋｂ／ｓ，该适配卡上配备了微处理器，自备存储空间，不占主机资源，可以实现各种通讯规程，适配卡采用了ＩＮＴＥＬ的高性能高集成度的串行通信控制芯片，故结构简单，可靠性好，性能价格比高。
This paper developed a computer X. 25 smart adapter card hardware and software design, data and control information can be parallel between the computer main memory and adapter card parallel flow, the interface provides multiple high-speed channels at speeds up to 64kb / s, the adapter card is equipped with micro-processing Device, self-storage space, does not occupy the host resources, can achieve a variety of communication protocols, adapters using INTEL’s high-performance high integration of serial communication control chip, so the structure is simple, reliable, cost-effective .