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1 | typedef unsigned char u8; | |
2 | ||
3 | u8 i0, i1, i2; | |
4 | ||
5 | u8 notes[] = { | |
6 | 0x84, 0x9d, 0xb0, 0x69, 0x9d, 0x84, 0x69, 0x58, | |
7 | 0x75, 0x8c, 0xb0, 0x69, 0x8c, 0x75, 0x69, 0x58 | |
8 | }; | |
9 | ||
10 | u8 g(u8 x, u8 t, u8 o){ | |
11 | u8 notes_ix = t & 0x7; | |
12 | if(3&i2) | |
13 | notes_ix += 8; | |
14 | u8 result = ((i1<<8|i0)*notes[notes_ix])>>8; // keep hi byte | |
15 | result >>= o; | |
16 | result &= x; | |
17 | result &= 3; | |
18 | return result; | |
19 | } | |
20 | void main(void){ | |
21 | i0 = i1 = i2 = 0; | |
22 | for(;;) { | |
23 | u8 sample; | |
24 | u8 n = i2<<2 | i1>>6; | |
25 | u8 s = i2>>1; | |
26 | ||
27 | sample = g(1,n,4); | |
28 | ||
29 | { u8 tmp; | |
30 | tmp = i2<<3 | i1>>5; | |
31 | tmp ^= n; | |
32 | sample += g(s,tmp,2); | |
33 | } //tmp | |
34 | ||
35 | { u8 tmp1 = s/3; | |
36 | u8 tmp2; | |
37 | tmp2 = (i2<<5|i1>>3)%3; | |
38 | tmp2 += n; | |
39 | sample += g(tmp1,tmp2,2); | |
40 | } //tmp1, tmp2 | |
41 | ||
42 | { u8 tmp1 = s/5; | |
43 | u8 tmp2 = n; | |
44 | { u8 tmp3 = (i2<<6|i1>>2)%3; | |
45 | tmp2 -= tmp3; | |
46 | } // tmp3 | |
47 | tmp2 += 8; | |
48 | sample += g(tmp1,tmp2,1); | |
49 | } //tmp1, tmp2 | |
50 | ||
51 | putchar(sample<<4); | |
52 | ||
53 | i0++; | |
54 | i1 += !i0; | |
55 | i2 += !i1 && !i0; | |
56 | } | |
57 | } |