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Groups > alt.os.development > #8413

Re: OS startup goals and steps

From "wolfgang kern" <nowhere@never.at>
Newsgroups alt.os.development
Subject Re: OS startup goals and steps
Date 2015-07-17 17:58 +0200
Organization KESYS-development
Message-ID <mob9nn$6jh$3@speranza.aioe.org> (permalink)
References (3 earlier) <op.x1ug7niuyfako5@localhost> <mo7kn3$kaq$1@dont-email.me> <op.x1ux2fybyfako5@localhost> <mo7vbm$kog$1@dont-email.me> <op.x1wvugc6yfako5@localhost>

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Rod Pemberton wrote:

>>> My OS doesn't use the BIOS.
>>
>> Not at all?


> No.  If it were more complete, it ... might.  I'm not sure, maybe needs
> E820h in the future, etc.  PCI - which wasn't planned - might need it too.
> VESA and higher resolution video modes would probably need BIOS.   But,
> currently, any BIOS use is expected to be done by the bootloader (or my
> DOS TSR startup).  I completely program everything I implemented.

You don't need the BIOS for PCI (just use the IO-port pair).
But there is no available bypass for INT_104Fxx and also INT15_E820
is easier than a check on all MTTRs and TOMs.
__
wolfgang

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Thread

OS startup goals and steps "James Harris" <james.harris.1@gmail.com> - 2015-07-14 10:35 +0100
  Re: OS startup goals and steps "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-15 04:00 -0400
    Re: OS startup goals and steps "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-15 22:29 -0400
      Re: OS startup goals and steps "James Harris" <james.harris.1@gmail.com> - 2015-07-16 08:00 +0100
        Re: OS startup goals and steps "James Harris" <james.harris.1@gmail.com> - 2015-07-16 11:01 +0100
          Re: OS startup goals and steps "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-17 05:40 -0400
            Re: OS startup goals and steps "wolfgang kern" <nowhere@never.at> - 2015-07-17 17:58 +0200
        Re: OS startup goals and steps "Alexei A. Frounze" <alexfrunews@gmail.com> - 2015-07-16 03:24 -0700
  Re: OS startup goals and steps "James Harris" <james.harris.1@gmail.com> - 2015-07-16 10:32 +0100
    Re: OS startup goals and steps "wolfgang kern" <nowhere@never.at> - 2015-07-16 16:04 +0200
      Re: OS startup goals and steps "James Harris" <james.harris.1@gmail.com> - 2015-07-17 06:44 +0100
        Re: OS startup goals and steps "wolfgang kern" <nowhere@never.at> - 2015-07-17 17:50 +0200
    Re: OS startup goals and steps "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-17 06:10 -0400
      Re: OS startup goals and steps "James Harris" <james.harris.1@gmail.com> - 2015-07-17 18:07 +0100
        Re: OS startup goals and steps "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-18 03:35 -0400
  Re: OS startup goals and steps "wolfgang kern" <nowhere@never.at> - 2015-07-16 14:42 +0200
    Re: OS startup goals and steps "Rod Pemberton" <boo@fasdfrewar.cdm> - 2015-07-17 05:48 -0400
      Re: OS startup goals and steps "wolfgang kern" <nowhere@never.at> - 2015-07-17 17:29 +0200

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