[News] Cloanto critisize AmigaXL marketing | ANN.lu |
Posted on 29-Nov-2001 01:16 GMT by Teemu I. Yliselä | 82 comments View flat View list |
Cloanto stated their opinion about AmigaXL marketing, which they feel has been misleading. They also released a comparison of Amiga Forever and "other solutions".
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Cloanto critisize AmigaXL marketing : Comment 81 of 82 | ANN.lu |
Posted by Solar (BAUD) on 03-Dec-2001 13:21 GMT | In reply to Comment 74 (Anonymous): @ victor #:
> It's known that f.ex. older PC systems (with their 640k limit + paging,
> etc.) wasn't created with multitasking (indeed not preemptive) in mind...
There was never such a thing as a *hardware* 640k limit. The limit was 1 MByte, imposed by the 8088 CPU only having 20 address lines. This was arbitrarily split into 640k and "the rest" by MS-DOS (640k for OS and applications, "the rest" for memory-mapped I/O like screen output).
The problem was *how* MS-DOS implemented this split, making it impossible to change this implementation without breaking downward compatibility - to the point of even the PIV still supporting the A20 gate hack...
> But, AFAIK, this is not an issue with today's PC's, not mentioning other,
> professional systems.
As I said, the hardware was never the real problem.
> Though, it's questionable, how WinXP runs programs written for the
> cooperative environments (W9x, Me)...
Sorry, but even if we would very much like it otherwise, the Win9x multitasking *is* preemptive. (The fact that it´s so horribly done is because they didn´t redesign the GUI messaging from scratch, dragging a lot of Win3.11 legacy with them.)
MacOS 9 is the last OS I know of having cooperative multitasking. |
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