| [News] Nueron/NuOS: Amiga-inspired computer project based on Coldfire processors | ANN.lu |
| Posted on 21-Jan-2004 19:44 GMT by Senex | 68 comments
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In the forum of Amiga.org, Stephen Smith of Austex Software ("Uropa2") presented his Amiga-inspired project Nueron/NuOS, a Coldfire computer with its own operating system. (A german translation can be found at amiga-news.de.)
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| Nueron/NuOS: Amiga-inspired computer project based on Coldfire processors : Comment 68 of 68 | ANN.lu |
| Posted by Nate Downes on 26-Jan-2004 16:20 GMT | In reply to Comment 66 (koan):
> I find it very hard to believe that even the OCS used such massive tolerances.
Then you haven't delt with analog television have you?
The Amiga was designed to allow interactive use of analog television signals (NTSC/PAL) in real-time. We're talking playback, genlocking, cookie-cutter effects, overlay, and blending, all in real time. Analog television is such that small changes in the synch of these various elements renders the whole system unusable. You end up with such things as screen artifacts, staircased or torn graphics, etc. The amiga chipsets as they were did not include such things as pipelines, which are how modern systems compensate by having only 1 element that has to be so accurate as opposed to the whole system.
AAA was a step away from this, using a pipeline to reduce the need for such accuracy throughout the whole system. But this increased the cost of the design dramatically, needing the buffers for the video output as well as increasing the overall complexity.
PC's don't need this accuracy simply because VGA allows variable-synch, and is much more tolerent simply because it is not intended for broadcast. You know what happens to broadcast signals that vary in timing? they bleed into other bands of the spectrum. This is unacceptable for broadcast work, which is what NTSC/PAL was intended for.
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