3_test/uartint.s

   1 .text
   2 start:
   3         br+ main ;br+
   4         call+ uartrdy
   5         ret
   6 main:
   7         ldi r0, 0x2000 ; status...
   8         ldi r1, 0x200b ;ldi r1, 8203
   9         ldi r2, 0x200c ;ldi r2, 8204
  10         ; ldi r4, 0x2024 ;ldi r4, 8228
  11         ; ldi r5, 3 ; enable interrupts
  12         ; stw r5, 0(r4)
  13         ldw r5, 0(r0)
  14         andx r5, 0x2
  15         brzs+ main
  16 uartrdy:
  17         ldw r7, 0(r2)
  18         stw r7, 0(r1)
  19         br main