-
公开(公告)号:US4707694A
公开(公告)日:1987-11-17
申请号:US873139
申请日:1986-06-06
CPC分类号: H04Q3/545 , H04Q11/0407
摘要: There is disclosed a port communication method and apparatus for controlling system controller communications with port circuits of the system. The port communication apparatus generates commands to port module interfaces, interposed between the controller and port circuits, in a predetermined order and receives acknowledgement signals therefrom. Thereafter, the port interfaces concurrently collect data from the associated port circuits and transmit this data in response to a subsequent read command from the port communication apparatus. In one embodiment the port communication apparatus includes a programmable microcode routine which generates the commands using input parameters which are specified in various registers and in the microcode program call.
摘要翻译: 公开了一种用于控制与系统的端口电路的系统控制器通信的端口通信方法和装置。 端口通信装置以预定顺序生成插入在控制器和端口电路之间的端口模块接口的命令,并从其接收确认信号。 此后,端口接口同时从相关联的端口电路收集数据,并响应于来自端口通信设备的后续读取命令来发送该数据。 在一个实施例中,端口通信装置包括可编程微代码程序,其可以使用在各种寄存器和微代码程序调用中指定的输入参数生成命令。