| 摘要 |
PURPOSE:To form a part or the whole of a conversion table speedily by providing an address converting means with a control circuit, a counter circuit, etc. and outputting a control signal, a counted value signal, etc. to control address conversion. CONSTITUTION:In the initial state turning on an electric power supply to a CPU1, a reference table is formed so that an address space outputted from the CPU1 coincides with a physical address space of a main memory 3. Namely, a table is formed by a control signal, a counted value signal, etc. outputted from a control circuit 4, a counter circuit 9, etc. and the same data are written in the address of an RAM2. At the use of the table, a value addressed by an address signal UA from the CPU1 is applied as an address signal UA' of the main memory 3 as it is. Thus, the formation of the circuits 4, 9, etc. makes it possible to form a part or the whole of the address conversion table speedily. |
