30 lines
577 B
ArmAsm
30 lines
577 B
ArmAsm
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/*
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# Detecte memory
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# int 15
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http://wiki.osdev.org/Detecting_Memory_%28x86%29
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Determine how much memory you've got, and how much of it is low memory.
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This is important in particular so that you can start your stack there
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when you enter protected mode, since the stack grows down.
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In 16-bit mode, it does not matter much,
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since most modern machines have all addressable memory there.
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`int 15` returns a list:
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each time you call it a new memory region is returned.
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## Low memory
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TODO what is it?
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*/
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#include "common.h"
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BEGIN
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mov $0xE820, %eax
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int $0x15
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hlt
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