Rev. 1.0, 02/00, page 19 of 1141
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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.
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Enhanced addressing mode
The addressing modes have been enhanced to make effective use of the 16-Mbyte address
space.
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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.
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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.
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Additional control register
One 8-bit control register has been added.
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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.