2 ms·
> I like it because it's illustrates the surprising fact that you can get away with only one file open for writing for most things. https://en.wikipedia.org/wi
by Someone 2y ago
> I like it because it's illustrates the surprising fact that you can get away with only one file open for writing for most things.
https://en.wikipedia.org/wiki/CP/M#CP/M_Plus https://en.wikipedia.org/wiki/CP/M#CP/M_Plus:
“The last 8-bit version of CP/M was version 3, often called CP/M Plus, released in 1983. Its BDOS was designed by Brown. It incorporated the bank switching memory management of MP/M in a single-user single-task operating system compatible with CP/M 2.2 applications”
Note the “single task” part. That excludes a lot from what we nowadays would be included in “most things”. That, I think, is the reason you could get away with that. I also would guess it was more that programmers would either not know what they missed or accepted it as a limitation that kept the OS small.