DIRECT MEMORY ACCESS EXPANDER UNIT FOR USE WITH A MICROPROCESSOR

摘要

H-2161 TITLE A DIRECT MEMORY ACCESS EXPANDER UNIT FOR USE WITH A MICROPROCESSOR A direct memory access unit for controlling a predetermined number of peripheral devices which directly read from and write into a memory associated with a microprocessor. Control of a plurality of peripheral devices by the direct memory access unit is performed on a non-priority basis, by a number of modular circuits connected in cascade.