Commit | Line | Data |
---|---|---|
1 | .equ p6ddr, 0xffb9 ;0x7f for output | |
2 | .equ p6dr, 0xffbb | |
3 | .equ seed, 0x01 | |
4 | .text | |
5 | .org 0 | |
6 | reset: .word main ;reset vector | |
7 | ; | |
8 | .org 0x400 | |
9 | main: mov.b #0x7f,r0l ;port 6 ddr = 7F | |
10 | mov.b @0xffbb:8,r0l ;***test*** | |
11 | mov.b r0l,@p6ddr:16 | |
12 | ; | |
13 | mov.b #seed,r0l ;start with 0000001 | |
14 | loop: mov.b r0l,@p6dr:16 ;output to port 6 | |
15 | delay: mov.w #0x0000,r1 | |
16 | deloop: adds #1,r1 | |
17 | bne deloop:8 ;not = 0 | |
18 | rotl r0l | |
19 | bra loop:8 | |
20 | .word 0 |