Quote:
Originally Posted by Wepl
There are many instructions with the size of only one or two words (e.g. move dx,(d16,ax)). I think this is complicated.
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One could have a look at the WinUAE or WinFellow source code on how do it efficiently. Looking at the JIT code might help, too.
The main question would be if this is still faster in a significant way than the MMU exception overhead.
Quote:
Originally Posted by Wepl
On the 68040 may you not even have the PC of the faulted instruction.
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Does 68040 point to the next instruction in this case? If so, 68040 will need to be cared specifically. How does, e.g. WHDLoad do it with MMU snoop options enabled?