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Hitachi 6309

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<processor> (HD6309) Hitachi's version of the Motorola 6809 microprocessor. Compatible with the 6809, it added two new eight-bit registers that could be added to form a second 16-bit register, and all four eight-bit registers could form a 32-bit register. It also featured division, and some 32-bit arithmetic and was generally 30% faster in native mode. This information, surprisingly, was never published by Hitachi.

Technical reference (http://sandelman.ottawa.on.ca/People/Alan_DeKok/interests/6309.techref).


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