I even went as far as replacing the PIO chips with some new ones, so convinced
was I that I was doing things correctly. I wasn't, of course.
The designers of this circuit (I'm doing a reverse engineering job) arranged
the C/'D and A/'B lines the opposite way around to Zilog's suggestion of
conn
On February 27, 2009 02:20:12 pm Richard Gray wrote:
> Hi Folks,
>
> I am using a Z80180 (64-pin DIL) chip with garden variety Z80 PIO, and I
> don't seem to be able to coax the PIO into performing any output
> whatsoever.
>
> Now, I've verified that the above code sends the correct data to the P
