Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
it would be an interesting excercise , turning PORTD into two I/O ports and using PORTE as the control lines, but you may need one more pin to control the PIA, not sure without looking at the data sheet in more detail..
Don't know about 'interesting', probably 'pointless' would be more like it - why interface such an old bus controlled PIO to a micro-controller, there are far easier (and cheaper) ways to expand ports if you need to.
The 6821 was designed to add ports to a system that didn't have any, so it's not really relevent to a micro-controller.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
