Apparatus for preventing computer data destructively read out fr

Details Apparatus for preventing computer data destructively read out fr Apparatus for preventing computer data destructively read out fr

1992-08-24

1996-10-01

Beausoliel, Jr., Robert W.

Excavating

395250, 395873, 371 671, G06F 1110

Patent

active

055616720

ABSTRACT:
A data transfer control system for a computer for preventing destructive read out of data from an external storage unit during a data transfer operation to a storage unit of the computer. The system employs a first buffer memory for temporarily storing the series of data read out from the external storage unit, a second buffer memory for temporarily storing the series of data transferred from the first buffer memory and a judging unit for determining whether or not the last single data word of the data stream stored in the first buffer is coincident with the last single data word of the data stream stored in the second buffer. If the words fail to coincide, the system issues an abnormal data transfer signal.

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