초록 ▼

There is disclosed an error recovery apparatus and method for a data processing system having (1) a peripheral unit, for instance, a magnetic disc unit, for storing data in a plurality of blocks each having a unique address, (2) a main memory for storing data read from the peripheral units, and (3)

There is disclosed an error recovery apparatus and method for a data processing system having (1) a peripheral unit, for instance, a magnetic disc unit, for storing data in a plurality of blocks each having a unique address, (2) a main memory for storing data read from the peripheral units, and (3) a controller for controlling the transfer of the data blocks from the peripheral unit to the main memory by execution of a single channel command word (CCW) chain. When an uncorrectable error occurs in the transfer of a second or subsequent data block of the plurality of data blocks (not the first data block), the processor produces a new CCW chain to re-read the data block in error in addition to all the data blocks subsequent to the data blocking error and store these data blocks in the memory under the control of the new CCW chain.

대표청구항 ▼

An error recovery apparatus in a data processing system comprising: a peripheral unit for storing data in a plurality of data blocks, each of said data blocks having a unique address; a memory for storing a first channel command word (CCW) chain, said memory having storage areas for storing data tra

An error recovery apparatus in a data processing system comprising: a peripheral unit for storing data in a plurality of data blocks, each of said data blocks having a unique address; a memory for storing a first channel command word (CCW) chain, said memory having storage areas for storing data transferred from said peripheral unit; a controller connected between said memory and said peripheral unit for reading said data blocks from said peripheral unit and transferring said data blocks to said memory to store said data blocks in said storage areas determined by said first CCW chain, said controller having detecting means to detect an uncorrectable error in the transfer of the second or subsequent data block of said plurality of data blocks, and; processing means connected to said controller for generating a new CCW chain when an uncorrectable error occurs in a second or subsequent data block of said plurality of data blocks.