test.s

LED控制 ARM LPC2129 汇编程序

numcount  equ   0x40003000
          area  example2,code,readonly          
          entry        
main      ldr   r0,=numcount
          ldr   r1,[r0]
          add   r1,r1,#1
          str   r1,[r0]
halt      b     halt
          end