OpenCores

6809 and 6309 Compatible core

Issue List
Negate with Carry #1
Open thomas_rudloff opened this issue almost 10 years ago
thomas_rudloff commented almost 10 years ago

The 6809 has an op-code for negate with carry. Once I needed it and found it. It sits at the expected F/E position when you look at negate, subtract and subtract with carry and do a rectangle using the three known op-codes.

ale500 was assigned over 9 years ago
ale500 commented over 9 years ago

I'd like full 6309 compatibility, and there the unused opcodes are illegal.


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ale500
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