Message-Id: <199712020207.KAA07327@public.bta.net.cn>
From: "Tan Pinghui" <tanph AT bj DOT col DOT com DOT cn>
To: <djgpp AT delorie DOT com>
Date: Tue, 2 Dec 1997 10:07:33 +0800
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Hello all,

I'm very confused by the 386's 16-bit & 32-bit mixing coding.  
Here are some questions, please help.

(1) cs selector refers to 16-bit segment, and ds/es/fs/gs selectors to
32-bit segments (D=1), ss to 16-bit segment, how do the instructions
operate? the stack? the data?
(2) cs = 16-bit, ds/es/fs/gs = 32-bit, ss = 32-bit?
(3) cs = 16-bit, ds/es/fs/gs = 16-bit, ss = 32-bit?
(4) cs = 32-bit, ds/es/fs/gs = 16-bit, ss = 16-bit?
(5) cs = 32-bit, ds/es/fs/gs = 16-bit, ss = 32-bit?
(6) cs = 32-bit, ds/es/fs/gs = 32-bit, ss = 16-bit?

Thanks in advance.

Tan
tanph AT bj DOT col DOT com DOT cn