I purchased one in 1984 to learn CP/M and Z-80 assembly on the Apple II. Later I used it to learn Fortran and Turbo Pascal, and finally bought a PCPI Applicard

I purchased one in 1984 to learn CP/M and Z-80 assembly on the Apple II. Later I used it to learn Fortran and Turbo Pascal, and finally bought a PCPI Applicard to speed the things up. The Z-80 softcard could be one of the best cards in Apple II's history, IMHO.