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UPD17062 датащи(PDF) 47 Page - Renesas Technology Corp |
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UPD17062 датащи(HTML) 47 Page - Renesas Technology Corp |
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47 / 298 page ![]() 45 µPD17062 Example 3 shows a program that transfers eight words of data from BANK2 to BANK0 data memory in units of four words, as shown in Fig. 6-4. If the general-purpose register is allocated in a fixed row address, for example, only in row address 0 of BANK0, instructions are needed to transfer all of the eight words to the register and then store them into data memory. In contrast, if the row address of the general-purpose register is changed using the general-purpose register pointer as shown in example 3, the operation can be completed simply by executing a storage instruction. Fig. 6-4 Execution of Instructions in Example 3 0 1 2 3 45 6 789 A B C D E F 0 2 3 4 5 6 7 1 RP BANK0 0 2 3 4 5 6 7 1 BANK1 0 2 3 4 5 6 7 1 BANK2 RP = 0000000B RP = 0000100B System register Column address System register System register |
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