Commit | Line | Data |
---|---|---|
61fab018 | 1 | #include <stdio.h> |
da32ed67 | 2 | #include "fakeasm.h" |
61fab018 | 3 | typedef unsigned char u8; |
da32ed67 | 4 | |
24abdcbb TG |
5 | u8 data[] = { |
6 | 0x84, 0x9d, 0xb0, 0x69, 0x9d, 0x84, 0x69, 0x58, | |
7 | 0x75, 0x8c, 0xb0, 0x69, 0x8c, 0x75, 0x69, 0x58 | |
8 | }; | |
95fa231f | 9 | u8 zero; //zero register |
06aad1ff TG |
10 | u8 i0; |
11 | u8 i1; | |
12 | u8 i2; | |
13 | u8 i3; | |
3b86ca43 TG |
14 | u8 x; |
15 | u8 t; | |
16 | u8 o; | |
49137fbf | 17 | u8 _; |
e98ab46f TG |
18 | #define Mh o //mod3 vars |
19 | #define Ml _ // -"- | |
20 | #define Mr t // -"- | |
21 | u8 mod3(u8 hi, u8 lo) { //avail: t, o _ | |
22 | //http://homepage.divms.uiowa.edu/~jones/bcd/mod.shtml | |
23 | unsigned short a = ((hi) + (lo)) &0x1ff; | |
24 | hi = a>>8; //1 bit | |
25 | lo = a; | |
26 | lo = (hi<<4|lo>>4) + (lo & 0xF); | |
27 | lo = (lo >> 2) + (lo & 0x3); | |
28 | lo = (lo >> 2) + (lo & 0x3); | |
29 | if (lo > 2) lo = lo - 3; | |
30 | return lo; | |
31 | } | |
965274e2 | 32 | void g(void) { |
46a8d83c | 33 | // g(i, x, t, o) -> t |
49137fbf | 34 | #define tmp _ |
0f219114 | 35 | ANDI (t, 0x07) |
32632e61 | 36 | MOV (tmp, i2) |
63363195 | 37 | ANDI (tmp, 3) |
09cf3949 | 38 | TST (tmp) |
49137fbf | 39 | #undef tmp |
09cf3949 TG |
40 | BREQ (skip) |
41 | SUBI (t, -8) | |
42 | skip: | |
c616f0c2 | 43 | t = data[t]; |
49137fbf TG |
44 | /*MOV X_hi==_, data_hi |
45 | MOV X_lo==t, data_lo | |
46 | ADD X_lo, t | |
49137fbf TG |
47 | ADC X_hi, zero |
48 | LD t, X */ | |
e5715654 TG |
49 | t = (((i1&0x1f)<<8|i0)*t)>>8; //TODO |
50 | t >>= o; //NOTE: o == {1, 2, 4} | |
c616f0c2 TG |
51 | AND (t, x) |
52 | ANDI (t, 3) | |
46a8d83c | 53 | RET |
61fab018 TG |
54 | }; |
55 | ||
56 | int main(void) { | |
a1631438 TG |
57 | u8 n; |
58 | u8 s; | |
ab6fe4c2 | 59 | u8 acc; |
89f35588 | 60 | //TODO: clear all vars/registers |
5dd8b8ff | 61 | for (;;) { |
7874ed03 TG |
62 | MOV (n, i2) |
63 | LSL (n) | |
64 | LSL (n) | |
bc7680e3 TG |
65 | #define tmp acc |
66 | MOV (tmp, i1) | |
5d4207f9 TG |
67 | SWAP (tmp) |
68 | ANDI (tmp, 0x0f) | |
3eef1ade TG |
69 | LSR (tmp) |
70 | LSR (tmp) | |
128ff01a | 71 | OR (n, tmp) |
bc7680e3 | 72 | #undef tmp |
df192822 | 73 | MOV (s, i3) |
27b03017 TG |
74 | ROR (s) |
75 | ROR (s) | |
76 | ANDI (s, 0x80) | |
a582bbc3 TG |
77 | #define tmp acc |
78 | MOV (tmp, i2) | |
79 | LSR (tmp) | |
e389879f | 80 | OR (s, tmp) |
df192822 | 81 | #undef tmp |
3b86ca43 TG |
82 | |
83 | //voice 1: | |
84 | LDI (x, 1) | |
85 | MOV (t, n) | |
9401049b | 86 | LDI (o, 4) |
965274e2 | 87 | RCALL g(); |
46a8d83c | 88 | MOV (acc, t) |
3b86ca43 TG |
89 | |
90 | //voice 2: | |
91 | MOV (x, s) | |
1b023e92 | 92 | #define tmp o |
94c4920f TG |
93 | MOV (tmp, i2) |
94 | LSL (tmp) | |
95 | LSL (tmp) | |
96 | LSL (tmp) | |
97 | MOV (t, i1) | |
4b0b7dc5 TG |
98 | SWAP (t) |
99 | ANDI (t, 0xf) | |
100 | LSR (t) | |
94c4920f | 101 | OR (t, tmp) |
1b023e92 | 102 | #undef tmp |
23872091 | 103 | EOR (t, n) |
9401049b | 104 | LDI (o, 2) |
965274e2 | 105 | RCALL g(); |
46a8d83c | 106 | ADD (acc, t) |
3b86ca43 TG |
107 | |
108 | //voice 3: | |
2666c079 TG |
109 | MOV (x, s) |
110 | INC (x) | |
17c5b4e9 | 111 | #define tmp o |
a7a7abba | 112 | MOV (tmp, x) |
f84bcb7f | 113 | LSR (tmp) |
546b5bab TG |
114 | LSR (tmp) |
115 | ADD (tmp, x) | |
116 | ROR (tmp) | |
546b5bab TG |
117 | LSR (tmp) |
118 | ADD (tmp, x) | |
119 | ROR (tmp) | |
546b5bab TG |
120 | LSR (tmp) |
121 | ADD (tmp, x) | |
122 | ROR (tmp) | |
546b5bab | 123 | LSR (tmp) |
2c94c801 | 124 | MOV (x, tmp) |
17c5b4e9 | 125 | #undef tmp |
e98ab46f TG |
126 | Ml = i2<<5 | i1>>3; |
127 | Mh = i3<<5 | i2>>3; | |
128 | t = mod3(Mh,Ml); //TODO | |
18570947 | 129 | ADD (t, n) |
9401049b | 130 | LDI (o, 2) |
965274e2 | 131 | RCALL g(); |
46a8d83c | 132 | ADD (acc, t) |
3b86ca43 TG |
133 | |
134 | //voice 4: | |
6bc3ca83 TG |
135 | MOV (x, s) |
136 | INC (x) | |
137 | #define tmp o | |
86f35aa4 TG |
138 | MOV (tmp, x) |
139 | LSR (tmp) | |
140 | ADD (tmp, x) | |
141 | ROR (tmp) | |
86f35aa4 | 142 | LSR (tmp) |
86f35aa4 TG |
143 | LSR (tmp) |
144 | ADD (tmp, x) | |
145 | ROR (tmp) | |
146 | ADD (tmp, x) | |
147 | ROR (tmp) | |
86f35aa4 | 148 | LSR (tmp) |
86f35aa4 | 149 | LSR (tmp) |
c2693411 | 150 | MOV (x, tmp) |
6bc3ca83 | 151 | #undef tmp |
e98ab46f TG |
152 | Ml = i2<<6 | i1>>2; |
153 | Mh = i3<<6 | i2>>2; | |
154 | t = mod3(Mh,Ml); //TODO | |
e4f7baf0 TG |
155 | SUB (t, n) |
156 | NEG (t) | |
902cfdea | 157 | SUBI (t, -8) |
9401049b | 158 | LDI (o, 1) |
965274e2 | 159 | RCALL g(); |
46a8d83c | 160 | ADD (acc, t) |
bfce2f8c | 161 | |
95fa231f | 162 | putchar(acc<<4); //TODO |
89f35588 | 163 | SUBI (i0, -1) |
95fa231f TG |
164 | ADC (i1, zero, !i0) |
165 | ADC (i2, zero, !i0&&!i1) | |
166 | ADC (i3, zero, !i0&&!i1&&!i2) | |
fe9a76e4 | 167 | } |
61fab018 | 168 | } |