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Tag: drop-in replacement

Posted on April 13, 2022September 14, 2025

6502/65816: Running a 6502 build with a 65816

I had just finished building and testing my fourth 6502 build, a barebones testbed for my new PLD based address decoder. With my PLD successfully tested, the build didn’t really have much use anymore, except testing new PLD designs in the future. Given that it was barebones I figured it would be fun to see …

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Posted on April 9, 2022September 14, 2025

6502: Coding – Just because it works doesn’t mean it’s correct

I ran into an interesting problem the other day trying to upgrade my 6502 build 4 to work with the 65816. I plan to write more on this in another post, but after just one minor change I got build 4 with a 65816 to almost startup my 6502-based Forth operating system. For some reason, …

Continue reading “6502: Coding – Just because it works doesn’t mean it’s correct”

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