Multiprocessor system with storage control units including buffe

Details Multiprocessor system with storage control units including buffe Multiprocessor system with storage control units including buffe

1988-02-26

1990-04-24

Eng, David Y.

Boots, shoes, and leggings

364265, 3642665, 371 91, G06F 1116

Patent

active

049204793

ABSTRACT:
In a multiprocessor system having a first and a second storage control units with a first and a second buffer storages of a store-in type, respectively, for connecting a plurality of execution processor units to main storage units, a first diagnostic processor controls a reading circuit to read out first buffer data from the first buffer storage, upon occurrence of an error caused in the first storage control unit having the first buffer storage currently connected to a first of main storage units. The read-out first buffer data are transferred to a second diagnostic processor which, in turn, makes a writing circuit to write the read-out first buffer data into the second buffer storage to enable any one of the execution processor units to use the first buffer data after occurrence of the error. Prior to writing operation of the read-out first buffer data into the second buffer storage, the second diagnostic processor makes the second storage control unit store second buffer data from the second buffer storage into a second of main storage units currently connected to the second buffer storage. After completion of the writing operation, the second buffer storage is connected to the first main storage unit in place of the second main storage unit.

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