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1 | #include <stdio.h> | |
2 | #include "fakeasm.h" | |
3 | typedef unsigned char u8; | |
4 | ||
5 | u8 i0, i1, i2; //MEM | |
6 | u8 n; //MEM | |
7 | u8 sample; //MEM | |
8 | u8 acc; //ACC | |
9 | ||
10 | u8 notes[] = { | |
11 | 0x84, 0x9d, 0xb0, 0x69, 0x9d, 0x84, 0x69, 0x58, | |
12 | 0x75, 0x8c, 0xb0, 0x69, 0x8c, 0x75, 0x69, 0x58 | |
13 | }; | |
14 | ||
15 | void g(u8 t){ | |
16 | u8 notes_ix = t & 0x7; | |
17 | if(3&i2) | |
18 | notes_ix += 8; | |
19 | u8 result = ((i1<<8|i0)*notes[notes_ix])>>8; // keep hi byte | |
20 | acc = result; | |
21 | } | |
22 | void main(void){ | |
23 | CLEAR (i0) | |
24 | CLEAR (i1) | |
25 | CLEAR (i2) | |
26 | for(;;) { | |
27 | /*n = i2<<2 | i1>>6;*/ | |
28 | MOV (n, i2) | |
29 | SL (n) | |
30 | SL (n) | |
31 | MOV (acc, i1) | |
32 | SWAP (acc) | |
33 | AND (acc, 0xf) | |
34 | SR (acc) | |
35 | SR (acc) | |
36 | OR (n, acc) | |
37 | ||
38 | g(n); | |
39 | //^TODO | |
40 | SWAP (acc) | |
41 | AND (acc, 0x1) | |
42 | MOV (sample, acc) | |
43 | ||
44 | { u8 tmp; | |
45 | tmp = i2<<3 | i1>>5; | |
46 | tmp ^= n; | |
47 | g(tmp); | |
48 | //^TODO | |
49 | } //tmp | |
50 | SR (acc) | |
51 | AND (acc, i2) | |
52 | SR (acc) | |
53 | AND (acc, 3) | |
54 | ADD (sample, acc) | |
55 | ||
56 | { u8 tmp2; | |
57 | tmp2 = (i2<<5|i1>>3)%3; | |
58 | tmp2 += n; | |
59 | g(tmp2); | |
60 | //^TODO | |
61 | } //tmp2 | |
62 | SR (acc) | |
63 | SR (acc) | |
64 | { u8 tmp1 = i2/6; | |
65 | AND (acc, tmp1) | |
66 | } //tmp1 | |
67 | AND (acc, 3) | |
68 | ADD (sample, acc) | |
69 | ||
70 | { u8 tmp2 = n; | |
71 | { u8 tmp3 = (i2<<6|i1>>2)%3; | |
72 | tmp2 -= tmp3; | |
73 | } // tmp3 | |
74 | tmp2 += 8; | |
75 | g(tmp2); | |
76 | } //tmp2 | |
77 | SR (acc) | |
78 | { u8 tmp1 = i2/10; | |
79 | AND (acc, tmp1) | |
80 | } //tmp1 | |
81 | AND (acc, 3) | |
82 | ADD (sample, acc) | |
83 | ||
84 | putchar(sample<<4); | |
85 | ||
86 | INC (i0) | |
87 | i1 += !i0; // ADDC i1 | |
88 | i2 += !i1 && !i0; // ADDC i2 | |
89 | } | |
90 | } |