4 Dec
2018
4 Dec
'18
10:20 a.m.
On Tue, 4 Dec 2018 at 15:02, Maciej W. Rozycki via cctalk
<cctalk at classiccmp.org> wrote:
I don't know if the unreal mode has been retained
in the x86 architecture
to this day; as I noted above it was not officially supported. But then
some originally undocumented x86 features, such as the second byte of AAD
and AAM instructions actually being an immediate argument that could have
a value different from 10, have become standardised at one point.
I know, and was surprised that, v86 mode isn't supported in x86-64.
This caused major problems for the developers of DOSEMU.
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