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Real mode assembly I: Difference between revisions
Added "use16" line. Fixed segments, so memory below the bootloader can be used
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(Should have corrected instead. Offset is always the same, regardless of sector size.) |
(Added "use16" line. Fixed segments, so memory below the bootloader can be used) |
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Line 26:
<source lang="asm">
org 0x7C00 ; add 0x7C00 to label addresses
mov ax, 0x07C0 ; set up segments▼
use16 ; tell the assembler we want 16 bit code
mov ds, ax
mov es, ax
mov ss, ax ; setup stack
mov sp, 0xFFF0 ; stack grows downwards from 0xFFF0
mov si, welcome
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