progs/testbench.s

   1 #include "dt_inc.s"
   2 .text
   3         .define LCDBASE, 0x2060
   4         .define LCDSTATUS, 0x0
   5         .define LCDADDR, 0x4
   6
   7 .org 0x0
   8 start:
   9         br+ main
  10         br+ main
  11         ret
  12 main:
  13         call+ u_init
  14         call+ u_recv_byte
  15         call u_send_newline
  16
  17         ldis r1, 0x42
  18         call u_send_byte
  19
  20         call t_init
  21         call t_start
  22
  23 loop:
  24         call u_recv_byte
  25         ldi r0, LCDBASE@lo
  26         ldih r0, LCDBASE@hi
  27         ldw r1, LCDSTATUS(r0)
  28         call u_send_byte
  29         ldi r0, LCDBASE@lo
  30         ldih r0, LCDBASE@hi
  31         ldis r1, 0x141
  32         stw r1, LCDADDR(r0)
  33         br loop
  34
  35 reset_timer:
  36         ldis r1, 0
  37         call t_valset
  38         br loop