65 lines
890 B
NASM
65 lines
890 B
NASM
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org 0x7c00
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bits 16
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start:
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jmp 0x0000:.initialise_cs
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.initialise_cs:
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xor ax, ax
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mov ds, ax
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mov es, ax
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mov ss, ax
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mov sp, 0x7c00
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sti
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call load_gdt
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cli
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mov eax, cr0
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bts ax, 0
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mov cr0, eax
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jmp 0x18:.mode32
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bits 32
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.mode32:
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mov ax, 0x20
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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mov ss, ax
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push 0x1
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and edx, 0xff
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push edx
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push stage2.size
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push (stage2 - decompressor) + 0x70000
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mov esi, decompressor
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mov edi, 0x70000
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mov ecx, stage2.fullsize
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rep movsb
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call 0x70000
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bits 16
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err:
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hlt
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jmp err
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; Includes
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%include '../bootsect/gdt.inc'
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; ********************* Stage 2 *********************
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decompressor:
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incbin '../decompressor/decompressor.bin'
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align 16
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stage2:
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incbin '../stage2/stage2.bin.gz'
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.size: equ $ - stage2
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.fullsize: equ $ - decompressor
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