> > I was born in 1974 and I know the difference of DOS and command prompt. Yes, I'm 41 > > years old... > > I started coding in BASIC around 1987 for the MSX1 computer. > > > > Everything "DOS" back then meant no graphical interface. > > No it didn't. Back then "DOS" meant "library of disk I/O routines" and often didn't > include a UI at all. If you were lucky it might give you some extra BASIC commands > for loading programs from disk, but some S100 DOSes required you to bootstrap the > program some other way (maybe paper tape, front panel switches, or the machine code > monitor). The command-line BASIC interfaces existed independently of the DOSes, and > there were multiple DOSes for each system from different drive vendors with varying > levels of (in)compatibility. > > tl;dr you would've been laughed at back in the day for calling command-line > interfaces in general DOS, as the term "DOS" referred to disk I/O libraries, like > Apple DOS, CBM DOS, etc.
I'm sorry, you're mistaken. By 87 DOS was multitasking, doing advanced memory management etc. It didn't have a GUI, of course, but some were available for it. No-one thought of it as only a set of "disk I/O routines", as that would have been wholly inaccurate. That would be akin to saying Windows is just a way of drawing pictures on the screen.
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