Linked by Kroc on Thu 24th Aug 2006 20:26 UTC
OSNews, Generic OSes GEOS managed to offer nearly all the functionality of the original Mac in a 1 MHz computer with 64 Kilobytes of RAM. It wasn't an OS written to run on a generic x86 chip on a moving hardware platform. It was written using immense knowledge of the hardware and the tricks one could use to maximise speed. Note: After a small break, here is another one of the articles for the Alternative OS contest.
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Display system
by bogomipz on Fri 25th Aug 2006 07:27 UTC
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It had a postscript-like imaging model, complete with outline font technology and separate rotation, translation & scaling matrices for both the application and the UI. (a leaf from Mac OS X's book; 10 years before)

Here it sounds like GEOS did this 10 years before anybody else, which is a bit far fetched. Mac OSX is really NeXTstep version 5. NeXTstep had real display postscript right from the start, and had its first release in 1988. I think this makes for a closer race than the article indicates.

I don't know the history of GEOS, but I gather that it was originally released in 1986. Did it incorporate the "postscript-like imaging model" at this point? Did it even have it before NeXT? (And postscript-like doesn't mean actual Postscript(tm), right?)

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