24 lines
765 B
NASM
24 lines
765 B
NASM
; boot.asm
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; Author: Josh Holtrop
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; Date: 2009-06-25
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; Adapted from HOS 0.16 source
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%define CONSOLE_MEMORY 0xB8000
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; Symbols from C
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extern k_bootstrap, bootstrap_stack
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;**************************************************************************
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;* This is the entry point for the kernel. *
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;**************************************************************************
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[global start]
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start:
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mov cx, 0x0700 + 'a'
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mov [CONSOLE_MEMORY+160*8+0*2], cx
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mov esp, bootstrap_stack+4096 ; set up temporary stack space
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push eax ; multiboot bootloader magic value
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push ebx ; pointer to multiboot info struct
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call k_bootstrap
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