ARM汇编在20个无符号数据中查找最小的数

要求使用以下未完成的编程文件

1. AREA findmin, CODE, READONLY

          ENTRY
   

   start LDR R0, =tofind ;

    MOV     R3,#20          
   

save LDR R0, =min
STR R1, [R0]

stop
B stop
AREA Dmax, DATA, READONLY
tofind DCD 0x5500,0x100,0x300,0x33,0x99,0x5123,0x9875,0x10,0x609,0x3008,0x450,0x10,0x15,0x23,0x85,0x709,0x1234,0x10,0x4123,0x55
AREA Drmax, DATA, READWRITE
min DCD 0
minpos DCD 0,0,0
END