3 ms·
Yep they threw out a bunch of stuff. What I remember: the CS, SS, DS, and ES segment registers, binary coded decimal instructions, protection ring 1 and 2 as on
by legulere 9y ago
Yep they threw out a bunch of stuff. What I remember: the CS, SS, DS, and ES segment registers, binary coded decimal instructions, protection ring 1 and 2 as only 0 and 3 are used.
Probably there is a lot of more things that were removed.
- wolfgke 9y ago> protection ring 1 and 2 as only 0 and 3 are used Are they really dropped in x86-64? I thought they are still supported also in 64 bit mode.