Hitachi 6309
6309
HD6309
<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).
(1997-03-21)