The OP says that 8-bit CPUs couldn't handle Pascal well, and that Action! (release in 1983) was the first IDE for 8-bit machines.
But Apple Pascal was released for the Apple II in 1979. Based on UCSD Pascal, the Apple Pascal system was basically an OS that simply was an IDE; and it worked perfectly well on 8-bit hardware. I had quite a lot of fun with it back in the day.
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