>>632 それはアーキテクチャの問題ではなくて、製造上の問題でしょ。 ARMに関係ないと思うけど。

しかし、例えば以下の記事を見れば米軍で使われていることは明らかでしょ。

ARM-based development kit meets MIL-STD 1553
September 22, 2011
http://www.eenewseurope.com/news/arm-based-development-kit-meets-mil-std-1553

In collaboration with IAR Systems, HOLT Integrated Circuits has developed the MIL-STD-1553 application development kit, HI-6130.
As a major supplier of ICs for avionics and military data bus and display applications, HOLT claims its products are specified by more than 400 manufacturers worldwide, in flight control,
navigation, engine management, communications, safety equipment, and in-flight entertainment systems.