This repository has been archived on 2019-08-09. You can view files and clone it, but cannot push or open issues or pull requests.
s6-up-tp/TP2/TP22.txt

90 lines
1.6 KiB
Plaintext

.equ PINA = 0x00
.equ DDRA = 0x01
.equ PORTA = 0x02
.equ PINC = 0x06
.equ DDRC = 0x07
.equ PORTC = 0x08
.equ WDTCSR = 0x60
.equ TCCR0A = 0x24
.equ TCCR0B = 0x25
.equ TIMSK0 = 0x6E
.equ TIFR0 = 0x35
.equ RAMEND = 0x21FF
.equ SPH = 0x3E ; initialisation de la pile
.equ SPL = 0x3D
.def d2 = r19
.def d1 = r20
.def d0 = r21
.def select = r22
.org 0x000
; Vecteur RESET
jmp debut
.org 0x0018 ; Interruption du watchdog
jmp wd
.org 0x002E ; Interruption du timer
jmp tm
.org 0x0080
afficheur:
.DB 0x7E, 0x0C, 0x37, 0x9F, 0x4D, 0xDB, 0xFB, 0x0E, 0xFF, 0xDF
; 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
debut:
d2 <- 0
d1 <- 0
d0 <- 0
select <- 0b00100000
cli
; Configuration des ports
DDRA@IO <- 0xFF
DDRC@IO <- 0xFF
; Watchdog toutes les secondes
WDTCSR <- 0x10
WDTCSR <- 0b01000110
; Timer toutes les 2 ms
TCCR0A@IO <- 0x00
TCCR0B@IO <- 0x04
TIMSK0 <- 0x01
TIFR0 <- 0x01
sei
boucle:
sleep
jump boucle
wd:
inc d0
si d0 < 10 saut affichage
d0 <- 0
inc d1
si d1 < 10 saut affichage
d1 <- 0
inc d2
si d2 < 10 saut affichage
d2 <- 0
affichage:
; Affichage Simulateur
; PORTC@IO <- afficheur@ROM[d0]
; PORTB@IO <- afficheur@ROM[d1]
; PORTA@IO <- afficheur@ROM[d2]
reti
tm:
PortC@IO <- select
si select = 0b10000000 alors PortA@IO <- afficheur@ROM[d2]
si select = 0b01000000 alors PortA@IO <- afficheur@ROM[d1]
si select = 0b00100000 alors PortA@IO <- afficheur@ROM[d0]
lsl select
si select = 0 alors select <- 0b00100000
reti