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HD6432126R Datasheet(PDF) 53 Page - Renesas Technology Corp |
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HD6432126R Datasheet(HTML) 53 Page - Renesas Technology Corp |
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53 / 843 page  29 2.1.3 Differences from H8/300 CPU In comparison to the H8/300 CPU, the H8S/2000 CPU has the following enhancements. • More general registers and control registers Eight 16-bit extended registers, and one 8-bit control register, have been added. • Expanded address space Normal mode supports the same 64-kbyte address space as the H8/300 CPU. Advanced mode supports a maximum 16-Mbyte address space. • Enhanced addressing The addressing modes have been enhanced to make effective use of the 16-Mbyte address space. • Enhanced instructions Addressing modes of bit-manipulation instructions have been enhanced. Signed multiply and divide instructions have been added. Two-bit shift instructions have been added. Instructions for saving and restoring multiple registers have been added. A test and set instruction has been added. • Higher speed Basic instructions execute twice as fast. 2.1.4 Differences from H8/300H CPU In comparison to the H8/300H CPU, the H8S/2000 CPU has the following enhancements. • Additional control register One 8-bit control register has been added. • Enhanced instructions Addressing modes of bit-manipulation instructions have been enhanced. Two-bit shift instructions have been added. Instructions for saving and restoring multiple registers have been added. A test and set instruction has been added. • Higher speed Basic instructions execute twice as fast. |
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