Triple-Triple Redundant 777 Primary Flight Computer (1996) [pdf]

Re:Triple-Triple Redundant 777 Primary Flight Computer (1996... by samlittlewood on Wednesday December 02, 2015 @04:30AM (#10661894)

From a quick scan - each system also has a different sort of processor: AMD 29K, Motorola 68040, and Intel 80486

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Re:Triple-Triple Redundant 777 Primary Flight Computer (1996... by spectralblu on Wednesday December 02, 2015 @05:28AM (#10662113)

I believe these are requirements, that each of the separate teams working on these projects have to use wholly different suppliers to also minimize the chance that the same external factors negatively influence the system.

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Re:Triple-Triple Redundant 777 Primary Flight Computer (1996... by yuvadam on Wednesday December 02, 2015 @05:28AM (#10662112)

Possibly in order to use three different architectures to avoid any nasty arch-specific bugs

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Re:Triple-Triple Redundant 777 Primary Flight Computer (1996... by ejdyksen on Wednesday December 02, 2015 @09:43AM (#10663173)

Also, different compilers:

Each PFC channel contains three dissimilar processor lanes, and software from Ada source code using three different Ada compilers to provide triple dissimilarity.

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Re:Triple-Triple Redundant 777 Primary Flight Computer (1996... by DiabloD3 on Wednesday December 02, 2015 @05:24AM (#10662096)

Now that is impressive.

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