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AREA RESET, DATA, READONLY EXPORT __Vectors __Vectors DCD 0X40001000 DCD Reset_Handler ALIGN AREA mycode, CODE, READONLY ENTRY EXPORT Reset_Handler Reset_Handler LDR R0, =NUM LDR R3, =RESULT LDRB R1, [R0] AND R2, R1, #0X0F CMP R2, #09 BLS DOWN ADD R2, #07 DOWN ADD R2, #0X30 STRB R2, [R3] AND R4, R1, #0XF0 MOV R4, R4, LSR#04 CMP R4, #09 BLS DOWNER ADD R3, #07 DOWNER ADD R4, #0X30 STRB R4, [R3, #01] NUM DCD 0X0000003A AREA data, DATA, READWRITE RESULT DCD 0 END
