mirror of
https://github.com/ipxe/ipxe
synced 2025-12-25 17:12:40 +03:00
40 lines
554 B
NASM
40 lines
554 B
NASM
bits 16
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org 100h
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jmp start
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shuffle_start:
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push 0xB800
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pop es
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mov cx, 80*24*2
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mov ax, 'AA'
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xor di, di
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rep stosw
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.lbl: jmp .lbl
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shuffle_end:
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nop
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shuffle_len equ (shuffle_end - shuffle_start + 1)
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start:
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; calculate physical address of shuffled part
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xor eax, eax
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push ds
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pop ax
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shl eax, 4
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add ax, shuffle_start
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mov dword [source], eax
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mov ax, 0012h
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mov di, shuffle_descriptors
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mov cx, num_shuffle_descriptors
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mov ebp, 0x7c00
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int 22h
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int3
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shuffle_descriptors:
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dd 0x7C00
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source: dd 0
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dd shuffle_len
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num_shuffle_descriptors equ 1
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