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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
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Newsgroups: comp.lang.ada
Subject: Re: Ada Tutor Web Site Shutting Down
Date: Thu, 19 May 2011 17:00:48 +0200
Organization: Ada @ Home
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Date: 2011-05-19T17:00:48+02:00
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Le Sat, 14 May 2011 23:19:09 +0200, Vinzent Hoefler  =

<0439279208b62c95f1880bf0f8776eeb@t-domaingrabbing.de> a =C3=A9crit:
> That's not entirely accurate. Not even speaking of EMS or XMS, first  =

> there
> was the HMA, which added almost 64K (anyone remember A20?), then the b=
ig
> real (aka. unreal) mode was "invented". 32-Bit addressing required, bu=
t
> you could access the full 4 GB under native DOS. Good ol' times where =
I
> still knew every single interrupt or port address and it's purpose. ;)=

(Yes, I remember the A20 line address, locked/unlocked via the keyboard =
 =

controller port). That was not so much handy, as this required a kind of=
  =

memory bank switching, just like the one there use to be on even older  =

computers (I learned it later, I was too much young at that time). Nativ=
e  =

DOS was still 16 bits.

-- =

Si les chats miaulent et font autant de vocalises bizarres, c=E2=80=99es=
t pas pour  =

les chiens.
=E2=80=9C c++; /* this makes c bigger but returns the old value */ =E2=80=
=9D [Anonymous]