Article states that win 3.0 used 32-bit flat addressing mode, but when win 95 launched ms said win 3.0 didn’t (in 386 mode).

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this-is-why 3 hours ago | parent | next [-]

It used segmented 32-bit mode. Flat mode doesn’t support virtual addressing which was accomplished with the descriptor tables (and the ES register) if I recall correctly. lol it’s been 33 years since I wrote windows drivers. Had to use masm to compile the 16-bit segments to thunk to the kernel

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shakna 3 hours ago | parent | prev [-]

Pretty sure Enhanced Mode, that only came later in Windows 3.11 for Workgroup, is the one that supported the flat addressing mode.

	▲	joakleaf an hour ago \| parent \| next [-]
		Enhanced mode was already in 3.0 (and I think allowed for flat addressing) However, Win32s was introduced in 3.11 which a subset of the Windows 32-bit API from NT. 3.11 also introduced 32-bit disk access and 32-bit drivers. Microsoft did 32-bit in steps -- it was confusing already back then.
	▲	vasvir 2 hours ago \| parent \| prev [-]
		yep that's my recollection too