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Annotation of qemu/roms/ipxe/src/tests/comboot/shuffle-simple.asm, revision 1.1

1.1     ! root        1:        bits 16
        !             2:        org 100h
        !             3: 
        !             4:        jmp start
        !             5:        
        !             6: shuffle_start:
        !             7:        push 0xB800
        !             8:        pop es
        !             9:        mov cx, 80*24*2
        !            10:        mov ax, 'AA'
        !            11:        xor di, di
        !            12:        rep stosw
        !            13: .lbl:  jmp .lbl
        !            14: shuffle_end:
        !            15:        nop
        !            16: shuffle_len equ (shuffle_end - shuffle_start + 1)
        !            17: 
        !            18: start:
        !            19:        ; calculate physical address of shuffled part
        !            20:        xor eax, eax
        !            21:        push ds
        !            22:        pop ax
        !            23:        shl eax, 4
        !            24:        add ax, shuffle_start
        !            25:        mov dword [source], eax
        !            26: 
        !            27:        mov ax, 0012h
        !            28:        mov di, shuffle_descriptors
        !            29:        mov cx, num_shuffle_descriptors
        !            30:        mov ebp, 0x7c00
        !            31:        int 22h
        !            32:        int3
        !            33: 
        !            34: shuffle_descriptors:
        !            35:        dd 0x7C00
        !            36: source:        dd 0
        !            37:        dd shuffle_len
        !            38: 
        !            39: num_shuffle_descriptors equ 1
        !            40: 

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