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Mark Riley <markril@hotmail.com> wrote:
> It also turns out that there are 8 bytes of external RAM that peek
> through at addresses 0xff80-0xff87.
Yeah, I missed that, I'll add that to the notes.
> I bet the H8 designers left this little hole just so these instructions
> could be used on external devices.
Too bad they didn't document the hole well enough to make it obvious to the
people at Lego, who apparently had no idea. They use "mov.w rx,@0xf000:16"
all over the place instead of the shorter "mov.w rx,@0x80:8". Anyways.
The hole is clear enough on the memory map, but the whole instruction-size
advantage of the hole is not clear at all I don't think.
-Kekoa
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