IBM PCjr. Upgrades Part 2

When I first received my IBM PCjr. back in 2013, I was able to discuss most of the readily-available upgrades for the system that existed at that time.  https://nerdlypleasures.blogspot.com/2014/03/ibm-pcjr-upgrades.html  Now, almost six years later, we have some new upgrades available.  Let's see what modern conveniences can do for a 35-year old computer system


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You say "obsessed" as if it is a bad thing.