In general, the CPU12 is a proper superset of the M68HC11 CPU. Significant changes have been made to improve the efficiency and capabilities of the CPU without sacrificing compatibility with the popular M68HC11 family. This note provides information that will allow the large number of programmers familiar with the M68HC11 to evaluate moving from an M68HC11 system to an M68HC12 system. For more detailed information, please refer to the CPU12 Reference Manual, Motorola Publication Number CPU12RM/AD.
The manual is available on the Freeware Data Systems website:
http://www.freeware.aus.sps.mot.com/.
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