I used Hans Otten’s mirror of Lee’s website as a reference, plus the EhBASIC section of the forum. I based my port on the version v2.22, hosted on Klaus Dormann’s GitHub. It’s source-available (free for non-commercial use only), and seems to be well-regarded by 6502 enthusiasts.ĮhBASIC was written by the late Lee Davidson. I heard about an interpreter called EhBASIC (“Enhanced BASIC”) from on this YouTube video by Chris Bird. Porting an existing interpreter will be a fast way to get a command-prompt, and it will also add the ability to load arbitrary software, by typing out a program. This computer is architecturally similar to a 1980’s home computer, where BASIC was a widely-used interpreted language. After a lot of work on the hardware side, I decided that it’s time to move past “Hello World” programs, and port a BASIC interpreter. I’ve recently been building my own 6502-based computer.
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