flat assembler - aeBIOS - case study

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Index > OS Construction > aeBIOS - case study - xOS

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Mike Gonta

Joined: 26 Dec 2010
Posts: 238
Location: the-ideom

Mike Gonta

xOS is a 16 bit real mode OS developed by me239.
Here I am presenting the same code translated to 32 bit protected mode.

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Mike Gonta
the-ideom - now you know how to compile

https://mikegonta.com

Last edited by Mike Gonta on 12 Sep 2013, 22:34; edited 4 times in total

06 Jan 2011, 18:42

neville

Joined: 13 Jul 2008
Posts: 507
Location: New Zealand

neville

Hi Mike
Interesting. I've always stayed clear of PM except for getting into "unreal" mode because I find the PM environment a bit daunting - having to set up an IVT for example.
At some stage I need to bite the bullet if I'm ever going to progress to Long Mode (which I presently hate even more than PM!) so I should look at what you've done with aeBIOS.

I looked at the xOS sources you've published but I didn't even see a GDT. Is this in some other code elesewhere? I guess I'm one of the many who looked but didn't see Sad

Also you site has a heading for How Do You Write the aeBIOS Image on a Pendrive (or similar), but no actual information included. What is (are) your recommended method(s) for this?

Thanks

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FAMOS - the first memory operating system

06 Jan 2011, 19:58

Mac2004

Joined: 15 Dec 2003
Posts: 313

Mac2004

Neville: If you are using windows, you can use hxd to write the image on
pendrive.

http://mh-nexus.de/en/hxd/

regards
Mac2004

06 Jan 2011, 20:25

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