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1 | #include <stdio.h> | |
2 | #include "fakeasm.h" | |
3 | typedef unsigned char u8; | |
4 | ||
5 | u8 data[] = { | |
6 | 0x84, 0x9d, 0xb0, 0x69, 0x9d, 0x84, 0x69, 0x58, | |
7 | 0x75, 0x8c, 0xb0, 0x69, 0x8c, 0x75, 0x69, 0x58 | |
8 | }; | |
9 | u8 i0; | |
10 | u8 i1; | |
11 | u8 i2; | |
12 | u8 i3; | |
13 | u8 x; | |
14 | u8 t; | |
15 | u8 o; | |
16 | u8 g(int i) { | |
17 | u8 tmp; | |
18 | ANDI (t, 0x07) | |
19 | MOV (tmp, i2) | |
20 | ANDI (tmp, 3) | |
21 | TST (tmp) | |
22 | BREQ (skip) | |
23 | SUBI (t, -8) | |
24 | skip: | |
25 | t = data[t]; | |
26 | t = (i*t) >> o; | |
27 | AND (t, x) | |
28 | ANDI (t, 3) | |
29 | return t; | |
30 | }; | |
31 | ||
32 | int main(void) { | |
33 | int i = 0; | |
34 | unsigned short n; | |
35 | unsigned short s; | |
36 | u8 acc; | |
37 | for (;;) { | |
38 | acc = 0; | |
39 | n = i >> 14; | |
40 | s = i >> 17; | |
41 | ||
42 | //voice 1: | |
43 | LDI (x, 1) | |
44 | MOV (t, n) | |
45 | LDI (o, 12) | |
46 | acc += g(i); | |
47 | ||
48 | //voice 2: | |
49 | MOV (x, s) | |
50 | t = n ^ i >> 13; | |
51 | LDI (o, 10) | |
52 | acc += g(i); | |
53 | ||
54 | //voice 3: | |
55 | x = s / 3; | |
56 | t = n + ((i >> 11) % 3); | |
57 | LDI (o, 10) | |
58 | acc += g(i); | |
59 | ||
60 | //voice 4: | |
61 | x = s / 5; | |
62 | t = 8 + n - ((i >> 10) % 3); | |
63 | LDI (o, 9) | |
64 | acc += g(i); | |
65 | ||
66 | putchar(acc<<4); | |
67 | i++; | |
68 | i0 = i; | |
69 | i1 = i>>8; | |
70 | i2 = i>>16; | |
71 | i3 = i>>24; | |
72 | } | |
73 | } |