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> OS Construction > 4MB paging help |
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CandyMan 24 Aug 2011, 19:09
Whether somebody could help me to write first 4GB memory paging one to one (4MB of the page)?
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24 Aug 2011, 19:09 |
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Madis731 25 Aug 2011, 05:59
http://board.flatassembler.net/topic.php?p=118339#118339
If you check out the Stage2\Paging.inc you can see that it sets up 4MB pages @70000. There's also some old 4KB code commented out if you're interested. Nothing more to it than looping through all the 4GB and setting up 4MB pages (totaling 1024 pages). |
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25 Aug 2011, 05:59 |
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CandyMan 25 Aug 2011, 15:13
What is wrong?
Last edited by CandyMan on 28 Aug 2011, 11:48; edited 1 time in total |
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25 Aug 2011, 15:13 |
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Madis731 25 Aug 2011, 17:50
Because its a 16-bit executable I can't run it on my 64-bit machine.
You can play with paging in your *own* operating system. You cannot just write an executable and mess with protected features of a current OS. That is not possible. Maybe you are trying to write a new Windows 3.1 on top of DOS? http://en.wikipedia.org/wiki/Windows_3.1x It was 16-bit and as far as I know, used the same CPU features/properties as DOS (although I'm not sure)? |
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25 Aug 2011, 17:50 |
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CandyMan 25 Aug 2011, 18:04
Thanks all, problem solved!
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25 Aug 2011, 18:04 |
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