Machine language

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This shows a mapping of x86 machine language to assembler


00 01                 add    BYTE PTR [bx+di],al||
00 41 41              add    BYTE PTR [bx+di+0x41],al||
00 ff                 add    bh,bh ||
0a                    .byte 0xa ||
40                    inc    ax ||
41                    inc    cx ||
42                    inc    dx ||
43                    inc    bx ||
44                    inc    sp ||
45                    inc    bp ||
46                    inc    si ||
47                    inc    di ||
48                    dec    ax ||
49                    dec    cx ||
4a                    dec    dx ||
4b                    dec    bx ||
4c                    dec    sp ||
4d                    dec    bp ||
4e                    dec    si ||
4f                    dec    di ||
50                      push   ax
51                      push   cx
52                      push   dx
53                      push   bx
54                    push   rsp ||
85 c0                 test eax,eax || 
90                    NOP || 
b8 00 00 00 00        mov    eax,0x0 || 
c3                    ret  ||
cd 10                 int 10 ||
eb fd                 short jump to executing the byte before eb ||
fa                    cli               This will clear the interrupt flag in the processor meaning interrupts will not be processed after the flag is set again. This means a high risk - no more keyboard input etc.. So this is a privileged command and may only be executed by the operating system.

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