Commit a3eb34912f65710363405df377ac3693f48b68ec
Merge branch 'master' of archives.plil.fr:gbontoux/s6-mp-tutorat
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| 1 | +.equ PINA = 0x00 ; définition des adresses des ports | ||
| 2 | +.equ DDRA = 0x01 | ||
| 3 | +.equ PORTA = 0x02 | ||
| 4 | +.equ PINC = 0x06 | ||
| 5 | +.equ DDRC = 0x07 | ||
| 6 | +.equ PORTC = 0x08 | ||
| 7 | + | ||
| 8 | +.equ RAMEND = 0x21FF | ||
| 9 | +.equ SPH = 0x3E ; initialisation de la pile | ||
| 10 | +.equ SPL = 0x3D | ||
| 11 | + | ||
| 12 | +.def compteur = r20 | ||
| 13 | +.def seg = r21 | ||
| 14 | + | ||
| 15 | +.org 0x000 | ||
| 16 | + ; Vecteur RESET | ||
| 17 | + jmp debut | ||
| 18 | + | ||
| 19 | +.org 0x0080 | ||
| 20 | + | ||
| 21 | +afficheur: | ||
| 22 | + .DB 0x3F, 0x30, 0x6D, 0x79, 0x72, 0x5B, 0x5F, 0x31, 0x7F, 0x7B, 0x77, 0x40, 0x4c, 0xfc, 0xcf, 0xc7, 0x40, 0xf6, 0x04, 0x3c, 0x40, 0x0E, 0x37, 0x54, 0x5c, 0x40, 0x40, 0x44, 0x5b, 0x4e, 0x1c, 0x1c, 0x40, 0x40, 0x40, 0x40, 0x63 | ||
| 23 | + ; 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z, ° | ||
| 24 | + | ||
| 25 | + | ||
| 26 | +debut: | ||
| 27 | + DDRA@IO <- 0xFF | ||
| 28 | + DDRC@IO <- 0xFF | ||
| 29 | + | ||
| 30 | +boucle: | ||
| 31 | + | ||
| 32 | + ; On affiche compteur sur le 7 segments | ||
| 33 | + seg <- afficheur@ROM[compteur] | ||
| 34 | + out porta,seg | ||
| 35 | + | ||
| 36 | + ; On change de chiffre | ||
| 37 | + inc compteur | ||
| 38 | + si compteur > 36 alors compteur <- 0 | ||
| 39 | + | ||
| 40 | + ; On attend et on recommence | ||
| 41 | + call tempo | ||
| 42 | + call tempo | ||
| 43 | + call tempo | ||
| 44 | + saut boucle | ||
| 45 | + | ||
| 46 | +tempo: | ||
| 47 | + ldi r24,8 | ||
| 48 | +tempoA: | ||
| 49 | + subi r22,1 | ||
| 50 | + sbci r23,0 | ||
| 51 | + sbci r24,0 | ||
| 52 | + brcc tempoA | ||
| 53 | + ret |