Before #DOS, there was CP/M, written for the #Z80 processor. After owning a Sharp MZ-80K, I bought a Bondwell 12. A real 'portable' computer, running CP/M. It came with programs like #WordStar and #CalcStar.

I still remember most of the WordStar keystroke combinations as well as many CP/M commands, but it's all slowly fading away. Maybe a good thing, it's now a waste of memory.

pip a:=b:*.* anyone?