| 摘要 |
PURPOSE:To exclude a memory exclusive for character patterns with no deterioration of executing speed and efficiency of a program, by providing a memory area for character patterns to a CS in order to avoid the conflict between the program and the character pattern. CONSTITUTION:Programs, codes and character patterns are stored to each area of a memory A; while programs and character patterns are stored to each area of a memory B, respectively. The programs have different contents and the character patterns are equal between memories A and B. When a microprocessor 1 gives an access to the program of the memory A and executes it, the character pattern is read out of the memory B. While the character pattern is read out of the memory A when the processor 1 gives an access to the memory B and executes a program. For this purpose, a memory selection circuit 2 switches circuits. |
