公开(公告)号：US3905025A

公开(公告)日：1975-09-09

申请号：US46133774

申请日：1974-04-16

Applicant: IBM

Inventor： DAVIS MICHAEL I ,  LOFFREDO JOHN M ,  WISE LARRY E ,  RICKARD PATRICK L

IPC: G06F9/46 ,  G06F9/48 ,  G06F13/26 ,  G06F3/00

CPC classification number: G06F9/4812 ,  G06F9/462 ,  G06F9/4818 ,  G06F13/26

Abstract: This data acquisition and control system includes many features for enhancing real time response to external or internal conditions. One feature relates to the use of multiple processor control circuits which can be switched between active and inactive status for controlling the performance of processor operations as a function of the level of priority of received interrupt service requests. Another feature pertains to I/O devices attached to the processor. These I/O devices include means for retaining data dynamically allocable by the processor program for specifying assigned interrupt levels and/or for identifying the requisite servicing subroutine in the processor to permit rapid response when an interrupt service is granted. The devices monitor their own status and provide a summary bit to the processor identifying whether or not a status data interchange is required. Multiple masking allows the processor to select between masking all interrupts, interrupts from any source on one or more interrupt priority levels, interrupts from a particular device or devices, or any combination of these.

Abstract translation: 该数据采集和控制系统包括许多功能，用于增强对外部或内部条件的实时响应。 一个特征涉及使用多个处理器控制电路，其可以在主动和非活动状态之间进行切换，以根据接收的中断服务请求的优先级来控制处理器操作的性能。 另一个特征涉及连接到处理器的I / O设备。 这些I / O设备包括用于保留由处理器程序动态分配的用于指定分配的中断级别的数据和/或用于在处理器中识别必需的服务子例程以允许在给予中断服务时的快速响应的装置。 设备监控自己的状态，并向处理器提供摘要位，识别是否需要状态数据交换。 多重屏蔽允许处理器在一个或多个中断优先级别的屏蔽所有中断，任何源的中断，特定设备或设备的中断或这些的任何组合之间进行选择。

公开(公告)号：US3706974A

公开(公告)日：1972-12-19

申请号：US3706974D

申请日：1971-10-27

Applicant: IBM

Inventor： PATRICK ROBERT L ,  RICKARD PATRICK L

IPC: H04L29/04 ,  G06F13/00 ,  G06F13/34 ,  G06F9/18

CPC classification number: G06F13/34

Abstract: A plurality of devices any one of which can request service by a central controlling unit are interconnected in a loop arrangement by an enabling line. The controlling unit is effectively coupled in parallel to all the devices so that the presence of a service request by one of them will immediately initiate operations that will result in one of the devices being granted service. Each device includes logic circuitry to force it to actuate its leg of the enabling line loop if it was the device granted last service or if it does not have a service request present. The connection of the device to the controlling unit results only if it has a service request and receives an enabling line signal from the device preceding it on the loop. Means for bypassing device requests to read high priority requests can be included as can means to initiate data gating overlapping with the establishing of the servicing connection.

Abstract translation: 其中任何一个可以由中央控制单元请求服务的多个设备通过启用线路以环路布置互连。 控制单元与所有设备并行地有效地耦合，使得其中一个设备的服务请求的存在将立即启动将导致其中一个设备被授予服务的操作。 每个设备包括逻辑电路，如果是设备授予最后一个服务或者不存在服务请求，则强制其启动其启用线路回路的支路。 仅当设备具有服务请求并且从循环上的设备接收到使能线路信号时，设备与控制单元的连接才会产生。 可以包括用于绕过设备请求以读取高优先级请求的装置，可以意味着启动数据门控与建立服务连接重叠。

公开(公告)号：CA1001314A

公开(公告)日：1976-12-07

申请号：CA231174

申请日：1975-07-10

Applicant: IBM

Inventor： DAVIS MICHAEL I ,  LOFFREDO JOHN M ,  WISE LARRY E ,  RICKARD PATRICK L

公开(公告)号：CA1000378A

公开(公告)日：1976-11-23

申请号：CA154871

申请日：1972-10-26

Applicant: IBM

Inventor： PATRICK ROBERT L ,  RICKARD PATRICK L

IPC: H04L69/14 ,  G06F13/00 ,  G06F13/34

Abstract: A plurality of devices any one of which can request service by a central controlling unit are interconnected in a loop arrangement by an enabling line. The controlling unit is effectively coupled in parallel to all the devices so that the presence of a service request by one of them will immediately initiate operations that will result in one of the devices being granted service. Each device includes logic circuitry to force it to actuate its leg of the enabling line loop if it was the device granted last service or if it does not have a service request present. The connection of the device to the controlling unit results only if it has a service request and receives an enabling line signal from the device preceding it on the loop. Means for bypassing device requests to read high priority requests can be included as can means to initiate data gating overlapping with the establishing of the servicing connection.

公开(公告)号：CA980910A

公开(公告)日：1975-12-30

申请号：CA154872

申请日：1972-10-26

Applicant: IBM

Inventor： DAVIS MICHAEL I ,  LOFFREDO JOHN M ,  WISE LARRY E ,  RICKARD PATRICK L

IPC: G06F9/46 ,  G06F9/48 ,  G06F13/26