AREA RESET, DATA, READONLY EXPORT __Vectors __Vectors DCD 0x10001000 DCD Reset_Handler ALIGN AREA MYCODE, CODE, READONLY ENTRY EXPORT Reset_Handler Reset_Handler LDR R0, =SRR MOV R10, #3 LDR R1, [R0] MOV R2, #1 UP AND R3, R1, #0x0F MLA R4, R2, R3, R4 LSR R1, #4 MOV R5, #0x0A MUL R2, R5 SUBS R10, #1 BNE UP STOP B STOP SRR DCD 0x45 AREA mydata, DATA, READWRITE SRC DCD 0x45 END