【発明の名称】デ-タチヤネル装置からの共通メモリアクセス方式

Japanese Patent JPS5911136

B2

PURPOSE:To execute the access easily, by executing the common memory access from a data channel device, through a common memory connection control part of a processor which has sent out an operation command to the data channel device. CONSTITUTION:Double common memories 1a, 1b are used in common by each processor 2a-2n. A data channel device 6 has a memory request controlling part 60, a processor number storage part 61, and a processor selecting part 62. In this state, a memory request from the device 6 is generated in the controlling part 60, and in accordance with display of the storage part 61, for instance, a memory 3a is selected by the selection part 62, and is transferred to a contention selection part 21 of the processor. The memory request of the device 6, which has been selected by this selection part 21 is transferred to a connection controlling part 23 by a memory switching part 22. Subsequently, the controlling part 23 receives the control information for connecting the devices 2a-2n and buses 7a, 7b, from a system controlling part 24, and sends out an access signal to the common memories 1a, 1b.

OKAYASU MASAHARU
SAITO ISAO
TAKAHASHI TOSHIHIRO
YAZAWA KATSUHIKO
IWAMOTO YOSHIHARU
ISHIKAWA TAKAHARU

JP17848780A

March 13, 1984

December 17, 1980

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OKI DENKI KOGYO KK
NIPPON DENSHIN DENWA KOSHA
NIPPON DENKI KK
HITACHI SEISAKUSHO KK
FUJITSU KK

G06F15/16; G06F12/00; G06F13/12; G06F13/16; G06F15/167; (IPC1-7): G06F3/00; G06F13/00; G06F15/16

Yoshitaka Yoshitaka

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