🚀 go-pugleaf

The poster referred to a warning from CATS not to use the TAS instruction.
As I remember, TAS is an instruction during which the 68000 believes
that it has the bus for the entire instruction execution time, and
effectively runs what it believes to be a Read/Modify/Write cycle.

But the custom chips don't take too nicely to this kind of activity
and can take away the bus before the instruction can be completed.
I don't know what effect that has on the instruction or the processor,
but it can, at the very least, make the instruction suspect.

Rob Peck