Re:HyperTerm – JS/HTML/CSS Terminal
by swiley on Saturday July 16, 2016 @08:10AM
(#12106088)
32 bit windows XP was an RTOS. This is one of the reasons so many people where reluctant to leave it.
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Windows CE can be a RTOS. XP is not.
https://msdn.microsoft.com/en-us/library/ms838350(v=winembed...
"Is Windows XP Embedded a real-time OS? Windows XP Embedded satisfies the vast majority of performance requirements. However, if you require a more powerful real-time support for your Windows XP Embedded OS, you can utilize one of the real-time extensions that are available through third-party vendors."
There are apparently third-party real-time extensions available, but if that counts then the existence of CONFIG_PREEMPT_RT makes Linux a RTOS and I think that'd be a pretty silly claim too.