Linked by Thom Holwerda on Thu 30th Aug 2012 17:43 UTC
Legal We all know about Apple's look-and-feel lawsuit against Microsoft over Windows 2.0, but this wasn't the only look-and-feel lawsuit Apple filed during those years. Digital Research, Inc., the company behind GEM, also found itself on the pointy end of Apple's needle. Unlike the lawsuit against Microsoft, though, Apple managed to 'win' the one against DRI.
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RE: Comment by kovacm
by phoudoin on Mon 3rd Sep 2012 13:53 UTC in reply to "Comment by kovacm"
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" more importantly, it could multitask.

no, it can not. You have ACC programs, that could run in parallel (loaded all time) but it was not multitasking.

Neither GEM or MacOS classic get true pervasive, automatic multitasking built-in.

But, still, GEM were capable of cooperative multitasking/time-sharing with AES as soon as 1985, and it was perfectly possible to run one or more accessories *and* an application, the only difference being that only the (single) application could have a menubar, but both application and accessories could have window(s) and CPU on (explicit or implicit) yield periods.
I then had developed a Minitel terminal emulator for Atari ST that was running as an accessory, even while in background, without resorting to any hack for that but just the idle AES event.

Cooperative multitasking became possible in MacOS 5, released in 1987.
The technical difference then was that the menubar was not anymore locked to one single application but follow application window(s)'s focus (with a bad side effect: no window, no easy way to switch to its menubar ;-) ).

Anyway, that's old times, and probably nobody care anymore.

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