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 | 18 | #define Mh o //mod3 vars |
dbf91c38 | 19 | #define Ml t // -"- |
e98ab46f | 20 | //http://homepage.divms.uiowa.edu/~jones/bcd/mod.shtml |
8d8c00e4 TG |
21 | void mod3(void) { |
22 | // mod3(Mh.Ml) -> t | |
23 | #define tmp _ | |
5b1c6cc5 TG |
24 | ADD (Ml, Mh) |
25 | CLR (Mh) | |
3d517d8a TG |
26 | ADC (Mh, zero, carry) //Mh only holds the carry bit |
27 | MOV (tmp, Ml) | |
28 | SWAP (tmp) | |
29 | ANDI (tmp, 0x0f) | |
30 | SWAP (Mh) | |
31 | OR (tmp, Mh) | |
0e3d0279 | 32 | ANDI (Ml, 0x0f) |
2a69999d | 33 | ADD (Ml, tmp) |
0fc1d6d3 TG |
34 | MOV (tmp, Ml) |
35 | LSR (tmp) | |
36 | LSR (tmp) | |
6c72d3c1 | 37 | ANDI (Ml, 0x03) |
2a69999d TG |
38 | ADD (Ml, tmp) |
39 | MOV (tmp, Ml) | |
40 | LSR (tmp) | |
41 | LSR (tmp) | |
42 | ANDI (Ml, 0x03) | |
43 | ADD (Ml, tmp) | |
c3639d5b TG |
44 | CPI (Ml, 3) |
45 | BRPL (skip) | |
46 | Ml = Ml - 3; //TODO | |
47 | skip:; | |
8d8c00e4 | 48 | #undef tmp |
e98ab46f | 49 | } |
965274e2 | 50 | void g(void) { |
46a8d83c | 51 | // g(i, x, t, o) -> t |
49137fbf | 52 | #define tmp _ |
0f219114 | 53 | ANDI (t, 0x07) |
32632e61 | 54 | MOV (tmp, i2) |
63363195 | 55 | ANDI (tmp, 3) |
09cf3949 | 56 | TST (tmp) |
49137fbf | 57 | #undef tmp |
09cf3949 TG |
58 | BREQ (skip) |
59 | SUBI (t, -8) | |
60 | skip: | |
c616f0c2 | 61 | t = data[t]; |
49137fbf TG |
62 | /*MOV X_hi==_, data_hi |
63 | MOV X_lo==t, data_lo | |
64 | ADD X_lo, t | |
49137fbf TG |
65 | ADC X_hi, zero |
66 | LD t, X */ | |
e5715654 TG |
67 | t = (((i1&0x1f)<<8|i0)*t)>>8; //TODO |
68 | t >>= o; //NOTE: o == {1, 2, 4} | |
c616f0c2 TG |
69 | AND (t, x) |
70 | ANDI (t, 3) | |
46a8d83c | 71 | RET |
61fab018 TG |
72 | }; |
73 | ||
74 | int main(void) { | |
a1631438 TG |
75 | u8 n; |
76 | u8 s; | |
ab6fe4c2 | 77 | u8 acc; |
89f35588 | 78 | //TODO: clear all vars/registers |
5dd8b8ff | 79 | for (;;) { |
7874ed03 TG |
80 | MOV (n, i2) |
81 | LSL (n) | |
82 | LSL (n) | |
bc7680e3 TG |
83 | #define tmp acc |
84 | MOV (tmp, i1) | |
5d4207f9 TG |
85 | SWAP (tmp) |
86 | ANDI (tmp, 0x0f) | |
3eef1ade TG |
87 | LSR (tmp) |
88 | LSR (tmp) | |
128ff01a | 89 | OR (n, tmp) |
bc7680e3 | 90 | #undef tmp |
df192822 | 91 | MOV (s, i3) |
27b03017 TG |
92 | ROR (s) |
93 | ROR (s) | |
94 | ANDI (s, 0x80) | |
a582bbc3 TG |
95 | #define tmp acc |
96 | MOV (tmp, i2) | |
97 | LSR (tmp) | |
e389879f | 98 | OR (s, tmp) |
df192822 | 99 | #undef tmp |
3b86ca43 TG |
100 | |
101 | //voice 1: | |
102 | LDI (x, 1) | |
103 | MOV (t, n) | |
9401049b | 104 | LDI (o, 4) |
965274e2 | 105 | RCALL g(); |
46a8d83c | 106 | MOV (acc, t) |
3b86ca43 TG |
107 | |
108 | //voice 2: | |
109 | MOV (x, s) | |
1b023e92 | 110 | #define tmp o |
94c4920f TG |
111 | MOV (tmp, i2) |
112 | LSL (tmp) | |
113 | LSL (tmp) | |
114 | LSL (tmp) | |
115 | MOV (t, i1) | |
4b0b7dc5 TG |
116 | SWAP (t) |
117 | ANDI (t, 0xf) | |
118 | LSR (t) | |
94c4920f | 119 | OR (t, tmp) |
1b023e92 | 120 | #undef tmp |
23872091 | 121 | EOR (t, n) |
9401049b | 122 | LDI (o, 2) |
965274e2 | 123 | RCALL g(); |
46a8d83c | 124 | ADD (acc, t) |
3b86ca43 TG |
125 | |
126 | //voice 3: | |
2666c079 TG |
127 | MOV (x, s) |
128 | INC (x) | |
17c5b4e9 | 129 | #define tmp o |
a7a7abba | 130 | MOV (tmp, x) |
f84bcb7f | 131 | LSR (tmp) |
546b5bab TG |
132 | LSR (tmp) |
133 | ADD (tmp, x) | |
134 | ROR (tmp) | |
546b5bab TG |
135 | LSR (tmp) |
136 | ADD (tmp, x) | |
137 | ROR (tmp) | |
546b5bab TG |
138 | LSR (tmp) |
139 | ADD (tmp, x) | |
140 | ROR (tmp) | |
546b5bab | 141 | LSR (tmp) |
2c94c801 | 142 | MOV (x, tmp) |
17c5b4e9 | 143 | #undef tmp |
e98ab46f TG |
144 | Ml = i2<<5 | i1>>3; |
145 | Mh = i3<<5 | i2>>3; | |
dbf91c38 | 146 | RCALL mod3(); |
18570947 | 147 | ADD (t, n) |
9401049b | 148 | LDI (o, 2) |
965274e2 | 149 | RCALL g(); |
46a8d83c | 150 | ADD (acc, t) |
3b86ca43 TG |
151 | |
152 | //voice 4: | |
6bc3ca83 TG |
153 | MOV (x, s) |
154 | INC (x) | |
155 | #define tmp o | |
86f35aa4 TG |
156 | MOV (tmp, x) |
157 | LSR (tmp) | |
158 | ADD (tmp, x) | |
159 | ROR (tmp) | |
86f35aa4 | 160 | LSR (tmp) |
86f35aa4 TG |
161 | LSR (tmp) |
162 | ADD (tmp, x) | |
163 | ROR (tmp) | |
164 | ADD (tmp, x) | |
165 | ROR (tmp) | |
86f35aa4 | 166 | LSR (tmp) |
86f35aa4 | 167 | LSR (tmp) |
c2693411 | 168 | MOV (x, tmp) |
6bc3ca83 | 169 | #undef tmp |
e98ab46f TG |
170 | Ml = i2<<6 | i1>>2; |
171 | Mh = i3<<6 | i2>>2; | |
dbf91c38 | 172 | RCALL mod3(); |
e4f7baf0 TG |
173 | SUB (t, n) |
174 | NEG (t) | |
902cfdea | 175 | SUBI (t, -8) |
9401049b | 176 | LDI (o, 1) |
965274e2 | 177 | RCALL g(); |
46a8d83c | 178 | ADD (acc, t) |
bfce2f8c | 179 | |
95fa231f | 180 | putchar(acc<<4); //TODO |
89f35588 | 181 | SUBI (i0, -1) |
95fa231f TG |
182 | ADC (i1, zero, !i0) |
183 | ADC (i2, zero, !i0&&!i1) | |
184 | ADC (i3, zero, !i0&&!i1&&!i2) | |
fe9a76e4 | 185 | } |
61fab018 | 186 | } |