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Article #6137

Re: Can software be 486-specific?

#6137
From: Mohit K. Goyal
Date: Thu, 12 Nov 1992 20:39
17 lines
1264 bytes
>Remeber that the 2 or 3 opcodes that are different between a 386+387 and a 
>486 are for MULTITASKING OPERATING SYSTEMS, and MULTIPROCESSOR support. 
>Therefore, it kind of makes sence for a new 32bit operating system (
>NeXTSTEP) to require an i486 processor.  Windows NT, by the way, requres a 
>386-25 or grater, not a 486.
>    _________________________________________________________________

How much difference(ie-improvement) do these 2 or 3 opcodes make in a
multitasking operating system?  How much better would an OS like OS/2
be if it required a 486SX instead of 386SX?

Finally, how can NT require a 386-25 or greater?  Can't an OS just
require either a 386SX & up, 386+387+up, 486SX+up, 486DX+up?

Does MS just recommend a 386DX-25 as the absolute minimum?

Thanks.
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From: goyal@utdallas.edu (Mohit K. Goyal)
Subject: Re: Can software be 486-specific?
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Date: Thu, 12 Nov 1992 20:39:58 GMT
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