Read this for some links: http://rhf.bradley.edu/~rkremer/tifaq.htm#13. >I have a Physics project coming up where we are to build an electronics >device, and I would love to build a memory expander for my TI85. I have been >looking on the internet, but I have not been able to find any schematics. If >any one knows where I can find it, or if you can give me them I would be >greatful. Thanks!