| 摘要 |
PURPOSE:To improve a data processing speed by changing the sequence for reading out a data stored in a ROM, by changing the information stored in a RAM. CONSTITUTION:The titled system is constituted of a ROM 1 which has stored data D1-D3, and a RAM 2 which has stored one of values R1-R3 of read-out sequences 1-3 of the data D1-D3 of the ROM 1, reads out the data D1, the data D2 and the data D3 of the ROM 1, respectively, and stores the contents of R1 of the RAM 2 in a register R. Subsequently, the contents of R2 and R3 of the RAM 2 are stored in the register R. The contents of the values R1-R3 of the RAM 2 can be rewritten freely, therefore, the read-out sequence of the data D1-D3 can be changed. In such a way, the data of the ROM can be read out in order of a high use frequency, therefore, a data processing speed can be improved.
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