Differences From H8/300H Cpu - Renesas Hitachi H8S/2194 Series Hardware Manual

• 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 mode
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.
Rev. 2.0, 11/00, page 17 of 1037