Talk:Protected mode

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Unnamed section[edit]

Most modern x86 operating systems run in protected mode, including Linux, FreeBSD, OpenBSD, NetBSD and Microsoft Windows 3.0 (which also ran in real mode for compatibility with Windows 2.x applications) and later.

Windows 3.0 is a modern OS? —Preceding unsigned comment added by (talkcontribs)

Windows 3.0 is not modern, nor a OS. (talk) 07:58, 9 May 2009 (UTC)

Possible confusion[edit]

I'm creating this section primarily in regards to this edit[1]. From everything I've read in the Intel manuals, "real mode application compatiblity" is essentially v8086 mode. It could also refer to the fact that the processor boots into real mode, but that isn't necessarily what the "real mode application compatiblity" section is discussing. Perhaps there is a misunderstanding, but from what I understand, both revisions are discussing the exact same concept. My revision has just shortened and revised that-- along with adding citations. --Android Mouse 05:03, 25 July 2007 (UTC)

"Nevertheless, even in Protected Mode, the 80286 remains upwardly compatible
with most 8086 and 80186 application programs. Most 8086 applications
programs can be re-compiled or re-assembled and executed on the 80286 in
Protected Mode."
I see what the section was refering to now. I'll update the article accordingly. --Android Mouse 05:34, 25 July 2007 (UTC)

Windows 3 not an OS and not modern[edit]

Well I would agree Windows 3.x needed a DOS-like OS to lay upon, be it MS-DOS or DR-DOS (let us set aside the FUD).

Hey, but look I got too much time on my hands and I have developed this chip that is in fact MS-DOS written in STONE Now I run Windows 3.x on top, is it an OS?

Windows 3.x Is not modern?

Was it before or after the cold war ended?

Is Ethernet old fashioned ?

One small step for America Man One Giant Leap for Really OLD FASHION TECHNOLOGY

Yes Windows 3.x is sooo old, so very very old

-->I just want to say this article suck in terms of relevance (other than as a historical reference point). I came to this article looking for the term's relevance today. Reading thru this just made my eyes glaze. Is there no one with relevant knowledge that could put a few sentences (or links) to the modern system's protected modes/measures (in 2015)? — Preceding unsigned comment added by (talk) 05:21, 8 July 2015 (UTC)


Technically, discussion of Gate A20 does not belong here because it is not part of the Intel x86 CPUs. It is a switch in the keyboard controller of some computers that use those CPUs. (talk) 11:40, 20 February 2012 (UTC) (talk) 01:17, 11 December 2011 (UTC)