Assembly code

Hi, I try to execute the following code:

        LDR R1,=0X40000000
        LDR R2,=0X11223344
        STR R2,[R1]
        ADD R1,R1,#3
        LDR R2,=0X55667788
        STR R2,[R1]
        ADD R1,R1,#3
        LDR R2,=0X99AABBCC
        STR R2,[R1]
        ADD R1,R1,#3
        LDR R2,=0XDDEEFF11
        STR R2,[R1]
S        B    S        
       After execution data in memory is as follows:

0x40000000: 88 77 66 55 CC BB AA 99 11 FF EE DD

Why and how?

Thanks in advance.

More questions in this forum