| 摘要 |
PURPOSE: A dual-ported memory and a share bank access control method are provided to remarkably improve a system performance by including an access authorization signal output port and an interrupt signal output port. CONSTITUTION: A port part comprises an address I/O port, a data input/output port, an access authorization signal output port and an interrupt signal output port. The access authorization signal output port outputs an access authorization signal allowing a share bank access to a first and a second processor. The interrupt signal output port notifies the fact of completing a share bank access process to the rest of the processors. A control logic part(20) outputs a selection control signal for an access to the share bank from a processor with an access privilege. A mux part(40,60) connects the processor with the access privilege according to the selection control signal of the control logic part to the share bank. |
