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ANNEXE D – EXTRAIT DE CODE DE LECTURE
1:
2: ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;
3: ; TRACK BALL SWITCH READ
4: ;
RET
5: ;
6: ;
7: ;
8: ;~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;
9: 01D0'
10: 01D0'
11: 01D0' 3E 0D
12: 01D2' D3 3F
13: 01D4' 06 19
14: 01D6' 10 FE
15: 01D8' DB DC
16:
17:
18:
19: 01DA' E6 0F
20:
21:
22:
23: 01DC' 0F
24: 01DD' 0F
25: 01DE' 0F
26: 01DF' 0F
27: 01E0' 57
28: 01E1' 3E 2D
29: 01E3' D3 3F
30: 01E5' 06 0D
31: 01E7' 10 FE
32: 01E9' DB DC
33: 01EB' E6 0F
34: 01ED' B2
35: 01EE' ED 44
36: 01F0' 32 C018
37: 01F3'
38: 01F3' 3E 0D
39: 01F5' D3 3F
40: 01F7' 06 0D
41: 01F9' 10 FE
42: 01FB' DB DC
43: 01FD' E6 0F
44:
45:
46:
47: 01FF' 0F
48: 0200' 0F
49: 0201' 0F
50: 0202' 0F
51: 0203' 57
52: 0204' 3E 2D
53: 0206' D3 3F
54: 0208' 06 0D
55: 020A' 10 FE
56: 020C' DB DC
57: 020E' E6 0F
58: 0210' B2
59: 0211' ED 44
60: 0213' 32 C019
61: 0216'
62: 0216' 3E 07
63: 0218' D3 3F
64: 021A' 06 19
65: 021C' 10 FE
66: 021E' DB DC
67: 0220' E6 C0
68: 0222' 0F
69: 0223' 0F
70: 0224' 5F
71: 0225' DB DD
72: 0227' E6 03
73: 0229' 0F
Manuel de Référence Hardware de la Sega Mk3 (Rev1) Page 41
DE LA TRACK BALL
P1_TRX ~ PLAYER 1 CONDITION (-7FH ~ 7FH)
P1_TRY ~ PLAYER 1 CONDITION (-7FH ~ 7FH)
P2_TRX ~ PLAYER 2 CONDITION (-7FH ~ 7FH)
P2_TRY ~ PLAYER 2 CONDITION (-7FH ~ 7FH)
T_BALL::
TRACK_X1:
LD
A,00001101B
OUT
(PSWC),A
LD
B,25
DJNZ
$
IN
A,(P1_SWPT)
AND
0FH
REPT
4
RRCA
ENDM
*
RRCA
*
RRCA
*
RRCA
*
RRCA
LD
D,A
LD
A,00101101B
OUT
(PSWC),A
LD
B,13
DJNZ
$
IN
A,(P1_SWPT)
AND
0FH
OR
D
NEG
LD
(P1_TRX),A
TRACK_Y1:
LD
A,00001101B
OUT
(PSWC),A
LD
B,13
DJNZ
$
IN
A,(P1_SWPT)
AND
0FH
REPT 4
RRCA
ENDM
*
RRCA
*
RRCA
*
RRCA
*
RRCA
LD
D,A
LD
A,00101101B
OUT
(PSWC),A
LD
B,13
DJNZ
$
IN
A,(P1_SWPT)
AND
0FH
OR
D
NEG
LD
(P1_TRY),A
TRACK_X2:
LD
A,00000111B
OUT
(PSWC),A
LD
B,25
DJNZ
$
IN
A,(P1_SWPT)
AND
11000000B
RRCA
RRCA
LD
E,A
IN
A,(P2_SWPT)
AND
11B
RRCA
;
;
;
;
;
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