| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a data processing system which is satisfactory in handleability. SOLUTION: A data processor is constituted to be connectable to a memory card or a PC card including an I/O card; a first PC card connector is constituted to be connectable to the PC card; and the external bus is divided into plural areas fixedly assigned to a ROM, a DRAM, and the PC card, and connected to the data processor, the ROM, the DRAM, and the first PC card connector. The data processor performs access to the external bus, based on a physical address in an address space. The data processor is provided with a central processing unit, which outputs an internal logical address and a memory managing unit connected to the central processing unit, which outputs the physical address to the external bus, based on the internal logical address.</p> |
