DATA TRANSFER CONTROL CIRCUIT IN BIDIRECTIONAL PARALLEL INTERFACE AND CONTROL METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To accelerate a data processing speed inside peripheral equipment by detecting input data from a computer and changing the storage area of the input data.;SOLUTION: This data transfer control circuit is provided with a data detection circuit 2 for detecting data to be detected stored in a detection data generation circuit 3 for storing the data to be detected among the data from the computer 1 from the data transmitted from the computer 1, a centronics interface control part 4 which is a bidirectional parallel interface control part for receiving and transmitting the data sent from the data detection circuit 2 and a data transfer circuit 5 for changing a data transfer area to a memory based on the address of a data transfer address generation circuit 6 for storing a normal data transfer address and a detection data transfer address. The data from the computer 1 are transferred to the set data storage area of the memory.;COPYRIGHT: (C)2001,JPO