What does NPX abbreviation stand for?

What does NPX abbreviation stand for?

I recently found the following abbreviation:

'NPX chips'


Intel(R) 64 and IA-32 Architectures Software Developer's Manual Volume 1: Basic Architecture
Order Number: 253665-044US
August 2012

and my question is what does NPX abbreviation stand for?

[ Details ]

Take a look at a page 338:

...Intel 387 and Intel 287 math coprocessors (NPX chips)...

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I was able to find only this sentence taken from the Pentium manual


"To determine whether an FPU or NPX is present in a system, applications can write to the FPU/

NPX status and control registers using the FNINIT instruction and then verify the correct values

are read back using the FNSTENV instruction"

Sorry for the off topic, but my posts are still queued for the admin approval.

I have found the exact meaning of the NPX abbreviation "Numeric Processor Extension". I also pasted a short excerpt from the Intel 287 coprocessor.I also posted the google search link , but my post is queued for approval. 

"80286 .... The 80287 Numeric Processor Extension (NPX) pro- ... 287 Speed CLK Speed "

>>...Numeric Processor Extension...

Thanks! It looks like a very old term possibly no longer used.

>>>Thanks! It looks like a very old term possibly no longer used>>>

You are welcome.

This term is from the time period of 286 and 386 microarchitecture.

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