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 TG |
19 | #define Ml t // -"- |
20 | void mod3(void) { //avail: t, o _ | |
e98ab46f | 21 | //http://homepage.divms.uiowa.edu/~jones/bcd/mod.shtml |
5b1c6cc5 | 22 | #define tmp _ |
5b1c6cc5 TG |
23 | ADD (Ml, Mh) |
24 | CLR (Mh) | |
3d517d8a TG |
25 | ADC (Mh, zero, carry) //Mh only holds the carry bit |
26 | MOV (tmp, Ml) | |
27 | SWAP (tmp) | |
28 | ANDI (tmp, 0x0f) | |
29 | SWAP (Mh) | |
30 | OR (tmp, Mh) | |
31 | Ml = (tmp) + (Ml & 0xF); | |
dbf91c38 TG |
32 | Ml = (Ml >> 2) + (Ml & 0x3); |
33 | Ml = (Ml >> 2) + (Ml & 0x3); | |
34 | if (Ml > 2) Ml = Ml - 3; | |
5b1c6cc5 | 35 | #undef tmp |
e98ab46f | 36 | } |
965274e2 | 37 | void g(void) { |
46a8d83c | 38 | // g(i, x, t, o) -> t |
49137fbf | 39 | #define tmp _ |
0f219114 | 40 | ANDI (t, 0x07) |
32632e61 | 41 | MOV (tmp, i2) |
63363195 | 42 | ANDI (tmp, 3) |
09cf3949 | 43 | TST (tmp) |
49137fbf | 44 | #undef tmp |
09cf3949 TG |
45 | BREQ (skip) |
46 | SUBI (t, -8) | |
47 | skip: | |
c616f0c2 | 48 | t = data[t]; |
49137fbf TG |
49 | /*MOV X_hi==_, data_hi |
50 | MOV X_lo==t, data_lo | |
51 | ADD X_lo, t | |
49137fbf TG |
52 | ADC X_hi, zero |
53 | LD t, X */ | |
e5715654 TG |
54 | t = (((i1&0x1f)<<8|i0)*t)>>8; //TODO |
55 | t >>= o; //NOTE: o == {1, 2, 4} | |
c616f0c2 TG |
56 | AND (t, x) |
57 | ANDI (t, 3) | |
46a8d83c | 58 | RET |
61fab018 TG |
59 | }; |
60 | ||
61 | int main(void) { | |
a1631438 TG |
62 | u8 n; |
63 | u8 s; | |
ab6fe4c2 | 64 | u8 acc; |
89f35588 | 65 | //TODO: clear all vars/registers |
5dd8b8ff | 66 | for (;;) { |
7874ed03 TG |
67 | MOV (n, i2) |
68 | LSL (n) | |
69 | LSL (n) | |
bc7680e3 TG |
70 | #define tmp acc |
71 | MOV (tmp, i1) | |
5d4207f9 TG |
72 | SWAP (tmp) |
73 | ANDI (tmp, 0x0f) | |
3eef1ade TG |
74 | LSR (tmp) |
75 | LSR (tmp) | |
128ff01a | 76 | OR (n, tmp) |
bc7680e3 | 77 | #undef tmp |
df192822 | 78 | MOV (s, i3) |
27b03017 TG |
79 | ROR (s) |
80 | ROR (s) | |
81 | ANDI (s, 0x80) | |
a582bbc3 TG |
82 | #define tmp acc |
83 | MOV (tmp, i2) | |
84 | LSR (tmp) | |
e389879f | 85 | OR (s, tmp) |
df192822 | 86 | #undef tmp |
3b86ca43 TG |
87 | |
88 | //voice 1: | |
89 | LDI (x, 1) | |
90 | MOV (t, n) | |
9401049b | 91 | LDI (o, 4) |
965274e2 | 92 | RCALL g(); |
46a8d83c | 93 | MOV (acc, t) |
3b86ca43 TG |
94 | |
95 | //voice 2: | |
96 | MOV (x, s) | |
1b023e92 | 97 | #define tmp o |
94c4920f TG |
98 | MOV (tmp, i2) |
99 | LSL (tmp) | |
100 | LSL (tmp) | |
101 | LSL (tmp) | |
102 | MOV (t, i1) | |
4b0b7dc5 TG |
103 | SWAP (t) |
104 | ANDI (t, 0xf) | |
105 | LSR (t) | |
94c4920f | 106 | OR (t, tmp) |
1b023e92 | 107 | #undef tmp |
23872091 | 108 | EOR (t, n) |
9401049b | 109 | LDI (o, 2) |
965274e2 | 110 | RCALL g(); |
46a8d83c | 111 | ADD (acc, t) |
3b86ca43 TG |
112 | |
113 | //voice 3: | |
2666c079 TG |
114 | MOV (x, s) |
115 | INC (x) | |
17c5b4e9 | 116 | #define tmp o |
a7a7abba | 117 | MOV (tmp, x) |
f84bcb7f | 118 | LSR (tmp) |
546b5bab TG |
119 | LSR (tmp) |
120 | ADD (tmp, x) | |
121 | ROR (tmp) | |
546b5bab TG |
122 | LSR (tmp) |
123 | ADD (tmp, x) | |
124 | ROR (tmp) | |
546b5bab TG |
125 | LSR (tmp) |
126 | ADD (tmp, x) | |
127 | ROR (tmp) | |
546b5bab | 128 | LSR (tmp) |
2c94c801 | 129 | MOV (x, tmp) |
17c5b4e9 | 130 | #undef tmp |
e98ab46f TG |
131 | Ml = i2<<5 | i1>>3; |
132 | Mh = i3<<5 | i2>>3; | |
dbf91c38 | 133 | RCALL mod3(); |
18570947 | 134 | ADD (t, n) |
9401049b | 135 | LDI (o, 2) |
965274e2 | 136 | RCALL g(); |
46a8d83c | 137 | ADD (acc, t) |
3b86ca43 TG |
138 | |
139 | //voice 4: | |
6bc3ca83 TG |
140 | MOV (x, s) |
141 | INC (x) | |
142 | #define tmp o | |
86f35aa4 TG |
143 | MOV (tmp, x) |
144 | LSR (tmp) | |
145 | ADD (tmp, x) | |
146 | ROR (tmp) | |
86f35aa4 | 147 | LSR (tmp) |
86f35aa4 TG |
148 | LSR (tmp) |
149 | ADD (tmp, x) | |
150 | ROR (tmp) | |
151 | ADD (tmp, x) | |
152 | ROR (tmp) | |
86f35aa4 | 153 | LSR (tmp) |
86f35aa4 | 154 | LSR (tmp) |
c2693411 | 155 | MOV (x, tmp) |
6bc3ca83 | 156 | #undef tmp |
e98ab46f TG |
157 | Ml = i2<<6 | i1>>2; |
158 | Mh = i3<<6 | i2>>2; | |
dbf91c38 | 159 | RCALL mod3(); |
e4f7baf0 TG |
160 | SUB (t, n) |
161 | NEG (t) | |
902cfdea | 162 | SUBI (t, -8) |
9401049b | 163 | LDI (o, 1) |
965274e2 | 164 | RCALL g(); |
46a8d83c | 165 | ADD (acc, t) |
bfce2f8c | 166 | |
95fa231f | 167 | putchar(acc<<4); //TODO |
89f35588 | 168 | SUBI (i0, -1) |
95fa231f TG |
169 | ADC (i1, zero, !i0) |
170 | ADC (i2, zero, !i0&&!i1) | |
171 | ADC (i3, zero, !i0&&!i1&&!i2) | |
fe9a76e4 | 172 | } |
61fab018 | 173 | } |