发明名称 Minicomputer with selector channel input-output system and interrupt system
摘要 A single buss minicomputer for use in a data processing system including a plurality of input-output devices. In the first part of the invention, execution of a special instruction by the computer enables a designated one of the input-output devices and connects it to the system to either transmit or receive data. All subsequent communications to and from the computer are with the designated device until the special instruction is again executed, enabling a different input-output device. The special instruction may originate from within the computer memory in a stored program or may be inputted to the system from one of the input-output devices via an interrupt system, the second part of the invention. The interrupt system allows any of the input-output devices to notify the minicomputer when servicing of any kind is required. Following an interrupt priority determination, the interrupting input-output device is connected to the system until a subsequent higher priority interrupt is received, the interrupt servicing is completed or a special connect instruction is executed to enable a different input-output device. A most important aspect of the interrupt system of this invention is that the interrupting input-output device can input instructions directly to the minicomputer. Via the interrupt system, then, any input-output device can input instructions directly to the instruction register of the central processing unit for execution.
申请公布号 US3909790(A) 申请公布日期 1975.09.30
申请号 US19720283640 申请日期 1972.08.25
申请人 OMNUS COMPUTER CORPORATION 发明人 SHAPIRO, ALLEN L.;SHERWOOD, DOUGLAS T.;FOSTER, SHELTON A.
分类号 G06F9/48;G06F12/06;G06F13/26;(IPC1-7):G06F9/18 主分类号 G06F9/48
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