| 摘要 |
PURPOSE:To speed up data transfer between a source memory and a destination memory by dividing an address in a memory into those for the source memory and the destination memory. CONSTITUTION:When data is transferred from a memory connected to the address incrementer 2a of a direct memory access controller 1 to a memory connected to an address incrementer 2b, a central processing unit sets the source address to the address incrementer 2a and the destination a address to the address incrementer 2b. Then a pice of address information 5a and 5b is outputted to the address incrementers 2a and 2b. Simultaneously a memory read signal 7a and a memory write signal 8b are outputted to the memory connected to the address incrementer 2a and to the memory connected to the address incrementer 2b, respectively, and data is transferred. |
