On last week's post, I had a "to do" list over the comments of the "upcoming improvements". So Toshimitsu Kamei came to the rescue again with the IO expander stuff. He sent some study material and sugests a small proof of concept just by following some internet …

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First of all, I must thanks Toshimitsu Kamei, without him this post wouln't be possible. Some time ago, he helped me up connecting the RasberryPI's GPIO along with W65C02S. It was fun, although I was kind of clumsy in this meantime, and them now I have to reattach everything. So …

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