>The previous A6 is stored on the stack, just before the return address
>used to go back to the caller. If you've written bad code that
>overwrites this value, the debugger could show this "register is
>unavailable" message when you inspect previous stack frames.
I always see it when I hit a ErrNonFatalDisplayIf or
ErrFatalDisplayIf. I'll check the stack and see what's up. Thanks for
the clarification.
Regards,
Steve Mann
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