[Gllug] Beagle Board

[Peter Corlett]

On 12 Jan 2009, at 16:46, John Edwards wrote:
[...]
> RISC OS was release in the late 1980s. Both MacOS and Windows
> were using co-operative multitasking at that time (and for
> years afterwards).


Windows NT was a fully pre-emptively multitasked, multiuser system  
with virtual memory and protection between processes back in 1993;  
MacOS appears to have followed in around 1999 with Rhapsody. The  
reasonably useful consumer equivalents would be Windows 2000 in 2000,  
and MacOS X.1 in 2001. These all offered a reasonable amount of  
backwards compatibility with their earlier more unreliable releases.

Remind me again, what date did Acorn release *their* pre-emptively  
multitasked, multiuser system with virtual memory and protection  
between processes?

And let's not forget the Amiga, which had pre-emptive multitasking  
right from the start in 1985. Oh, hang on, everybody did. It fell by  
the wayside just like RiscOS because it failed to keep up people's  
expectations of what a modern operating system should do.


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