公开(公告)号：US4159518A

公开(公告)日：1979-06-26

申请号：US812947

申请日：1977-07-05

申请人： Wilburn D. Draper ,  John D. Gentry ,  Michael T. Kawalec ,  Melvin T. Laakso

发明人： Wilburn D. Draper ,  John D. Gentry ,  Michael T. Kawalec ,  Melvin T. Laakso

IPC分类号： G06F13/26 ,  G06F13/374 ,  G06F3/04

CPC分类号： G06F13/26 ,  G06F13/374

摘要： In data processing systems of the type having a plurality of terminals connected by communication lines to a commmunications controller (CC) which assembles and manipulates the data from or to the terminals and one or more host central processing units (CPU's) to which the CC is connected by a number of channels, the CC will usually have a channel adapter unit (CA) for each channel and a processing unit to control the operations of the CC and to service the CA's in turn. It is necessary that the CA's be serviced with proper priorities to avoid unnecessary loss of information. An allocation of the proper priority is required where each CA can perform tasks of different urgency.The CC shown has four channel adapters communicating with four channels of the CPU's. All CA's can signal for an interrupt of the processor in the CC when CA service is needed. All CA's cause processor interrupts on the same interrupt level. A built-in priority allocation system will select for service that CA which wants to perform the task of highest priority among those CA's which are ready to perform a task. In the case of several requests of equal priority, a tie-breaking system comprises a loop circuit connecting all adapters and a signal sent in one direction around the loop from the last serviced adapter to select the next adapter which will be serviced.

摘要翻译： 在具有通过通信线路连接到多个终端的通信通信控制器（CC）的多个终端的类型的数据处理系统中，所述通信控制器（CC）组合和操作来自终端的数据，以及CC的一个或多个主机中央处理单元（CPU） 通过多个通道连接，CC通常将具有用于每个通道的通道适配器单元（CA）和用于控制CC的操作并依次服务CA的处理单元。 有必要为适当的优先事项提供服务，以避免不必要的信息丢失。 每个CA可以执行不同紧急性的任务时，需要分配适当的优先级。

公开(公告)号：US4495564A

公开(公告)日：1985-01-22

申请号：US291741

申请日：1981-08-10

申请人： Wilburn D. Draper ,  Melvin T. Laakso

发明人： Wilburn D. Draper ,  Melvin T. Laakso

IPC分类号： G06F11/00 ,  G06F11/30 ,  G06F13/00 ,  G06F13/12 ,  G06F3/04

CPC分类号： G06F13/126

摘要： An improved adapter for a programmed control unit arranged to be operated in facilitating I/O operations between one or more I/O devices and a CPU through a channel. The improved adapter includes a local store which store has a hardware register dedicated to store device status and the associated address in connection with test I/O commands. Thus, in accordance with the method of the invention on receiving a status request the improved adapter responds immediately with a response indicating that the information is not immediately available, for example, a busy response. The improved adapter initiates an interrupt to the program control unit to obtain the requested status information, which is then stored in dedicated hardware registers of the local store. On the next subsequent test I/O command to the same address, the improved adapter responds with the status as read from the dedicated hardware register. In another aspect the invention provides an improved adapter which includes communication path means, for example hardware registers, passing data to and from the channel and attached devices, and a further hardware register of sufficient capacity to store a status word and an associated address. The adapter also includes a bus for transferring a status word and associated address from the attached control unit in response to a channel received command to the further hardware register and, control circuitry which is responsive to a subsequent status request and command associated with the associated address, for placing the status word from the further hardware register on the channel. The adapter supports both host or control unit initiated I/O status transfers, i.e. both synchronous and asynchronous.

摘要翻译： 用于编程控制单元的改进的适配器被布置为通过通道来促进一个或多个I / O设备和CPU之间的I / O操作。 改进的适配器包括本地存储器，其存储具有专用于存储设备状态的硬件寄存器和与测试I / O命令相关联的相关联的地址。 因此，根据本发明的接收状态请求的方法，改进的适配器立即响应指示该信息不是立即可用的响应，例如忙响应。 改进的适配器向程序控制单元启动中断以获得请求的状态信息，然后存储在本地存储器的专用硬件寄存器中。 在接下来的测试I / O命令到同一地址时，改进的适配器将以从专用硬件寄存器读取的状态进行响应。 在另一方面，本发明提供了一种改进的适配器，其包括通信路径装置，例如硬件寄存器，将数据传送到信道和连接的装置，以及具有足够容量以存储状态字和相关联的地址的另外的硬件寄存器。 适配器还包括总线，用于响应于对另外的硬件寄存器的信道接收命令，从附加的控制单元传送状态字和相关联的地址;以及响应于随后的状态请求和与相关联的地址相关联的命令的控制电路 用于将来自另外的硬件寄存器的状态字放在通道上。 适配器支持主机或控制单元启动的I / O状态传输，即同步和异步。

公开(公告)号：US4296463A

公开(公告)日：1981-10-20

申请号：US39714

申请日：1979-05-17

申请人： Gerard Dalboussiere ,  Wilburn D. Draper

发明人： Gerard Dalboussiere ,  Wilburn D. Draper

IPC分类号： G06F9/46 ,  G06F13/00 ,  G06F13/374 ,  G06F3/04

CPC分类号： G06F13/374

摘要： A dynamic preselect interrupt priority circuit in which a plurality of adapters dynamically readjust priority until selected whereupon adjustment stops and the adapter having the highest interrupt and position priority is selected.

摘要翻译： 一种动态预选中断优先电路，其中多个适配器动态地重新调整优先级，直到所选的调整停止，并且选择具有最高中断和位置优先级的适配器。

公开(公告)号：US4593352A

公开(公告)日：1986-06-03

申请号：US474401

申请日：1983-03-11

申请人： Rene Castel ,  Jean-Louis Calvignac ,  Wilburn D. Draper

发明人： Rene Castel ,  Jean-Louis Calvignac ,  Wilburn D. Draper

IPC分类号： H04L29/10 ,  G06F13/00 ,  G06F13/28 ,  G06F13/38

CPC分类号： G06F13/282 ,  G06F13/385

摘要： Information exchange method in a communications controller comprising a central control unit (CCU) associated with a storage that provides a number of parameter/status and data areas equal to the maximum number of interfaces to be managed by the controller. The storage contains a line vector table which indicates the address of each area assigned to each interface. The exchange of the parameter/status information and data on the input/output bus (IO5) uses a minimum number of input/output operations controlled by the program stored in the storage (3).

摘要翻译： 一种通信控制器中的信息交换方法，包括与存储器相关联的中央控制单元（CCU），该存储器提供多个参数/状态和数据区域等于要由控制器管理的最大数量的接口。 存储器包含一个线向量表，其指示分配给每个接口的每个区域的地址。 在输入/输出总线（IO5）上交换参数/状态信息和数据使用由存储在存储器（3）中的程序控制的最小数量的输入/输出操作。