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) | |
0e3d0279 TG |
31 | ANDI (Ml, 0x0f) |
32 | ADD (Ml, tmp) //discard tmp | |
dbf91c38 TG |
33 | Ml = (Ml >> 2) + (Ml & 0x3); |
34 | Ml = (Ml >> 2) + (Ml & 0x3); | |
35 | if (Ml > 2) Ml = Ml - 3; | |
5b1c6cc5 | 36 | #undef tmp |
e98ab46f | 37 | } |
965274e2 | 38 | void g(void) { |
46a8d83c | 39 | // g(i, x, t, o) -> t |
49137fbf | 40 | #define tmp _ |
0f219114 | 41 | ANDI (t, 0x07) |
32632e61 | 42 | MOV (tmp, i2) |
63363195 | 43 | ANDI (tmp, 3) |
09cf3949 | 44 | TST (tmp) |
49137fbf | 45 | #undef tmp |
09cf3949 TG |
46 | BREQ (skip) |
47 | SUBI (t, -8) | |
48 | skip: | |
c616f0c2 | 49 | t = data[t]; |
49137fbf TG |
50 | /*MOV X_hi==_, data_hi |
51 | MOV X_lo==t, data_lo | |
52 | ADD X_lo, t | |
49137fbf TG |
53 | ADC X_hi, zero |
54 | LD t, X */ | |
e5715654 TG |
55 | t = (((i1&0x1f)<<8|i0)*t)>>8; //TODO |
56 | t >>= o; //NOTE: o == {1, 2, 4} | |
c616f0c2 TG |
57 | AND (t, x) |
58 | ANDI (t, 3) | |
46a8d83c | 59 | RET |
61fab018 TG |
60 | }; |
61 | ||
62 | int main(void) { | |
a1631438 TG |
63 | u8 n; |
64 | u8 s; | |
ab6fe4c2 | 65 | u8 acc; |
89f35588 | 66 | //TODO: clear all vars/registers |
5dd8b8ff | 67 | for (;;) { |
7874ed03 TG |
68 | MOV (n, i2) |
69 | LSL (n) | |
70 | LSL (n) | |
bc7680e3 TG |
71 | #define tmp acc |
72 | MOV (tmp, i1) | |
5d4207f9 TG |
73 | SWAP (tmp) |
74 | ANDI (tmp, 0x0f) | |
3eef1ade TG |
75 | LSR (tmp) |
76 | LSR (tmp) | |
128ff01a | 77 | OR (n, tmp) |
bc7680e3 | 78 | #undef tmp |
df192822 | 79 | MOV (s, i3) |
27b03017 TG |
80 | ROR (s) |
81 | ROR (s) | |
82 | ANDI (s, 0x80) | |
a582bbc3 TG |
83 | #define tmp acc |
84 | MOV (tmp, i2) | |
85 | LSR (tmp) | |
e389879f | 86 | OR (s, tmp) |
df192822 | 87 | #undef tmp |
3b86ca43 TG |
88 | |
89 | //voice 1: | |
90 | LDI (x, 1) | |
91 | MOV (t, n) | |
9401049b | 92 | LDI (o, 4) |
965274e2 | 93 | RCALL g(); |
46a8d83c | 94 | MOV (acc, t) |
3b86ca43 TG |
95 | |
96 | //voice 2: | |
97 | MOV (x, s) | |
1b023e92 | 98 | #define tmp o |
94c4920f TG |
99 | MOV (tmp, i2) |
100 | LSL (tmp) | |
101 | LSL (tmp) | |
102 | LSL (tmp) | |
103 | MOV (t, i1) | |
4b0b7dc5 TG |
104 | SWAP (t) |
105 | ANDI (t, 0xf) | |
106 | LSR (t) | |
94c4920f | 107 | OR (t, tmp) |
1b023e92 | 108 | #undef tmp |
23872091 | 109 | EOR (t, n) |
9401049b | 110 | LDI (o, 2) |
965274e2 | 111 | RCALL g(); |
46a8d83c | 112 | ADD (acc, t) |
3b86ca43 TG |
113 | |
114 | //voice 3: | |
2666c079 TG |
115 | MOV (x, s) |
116 | INC (x) | |
17c5b4e9 | 117 | #define tmp o |
a7a7abba | 118 | MOV (tmp, x) |
f84bcb7f | 119 | LSR (tmp) |
546b5bab TG |
120 | LSR (tmp) |
121 | ADD (tmp, x) | |
122 | ROR (tmp) | |
546b5bab TG |
123 | LSR (tmp) |
124 | ADD (tmp, x) | |
125 | ROR (tmp) | |
546b5bab TG |
126 | LSR (tmp) |
127 | ADD (tmp, x) | |
128 | ROR (tmp) | |
546b5bab | 129 | LSR (tmp) |
2c94c801 | 130 | MOV (x, tmp) |
17c5b4e9 | 131 | #undef tmp |
e98ab46f TG |
132 | Ml = i2<<5 | i1>>3; |
133 | Mh = i3<<5 | i2>>3; | |
dbf91c38 | 134 | RCALL mod3(); |
18570947 | 135 | ADD (t, n) |
9401049b | 136 | LDI (o, 2) |
965274e2 | 137 | RCALL g(); |
46a8d83c | 138 | ADD (acc, t) |
3b86ca43 TG |
139 | |
140 | //voice 4: | |
6bc3ca83 TG |
141 | MOV (x, s) |
142 | INC (x) | |
143 | #define tmp o | |
86f35aa4 TG |
144 | MOV (tmp, x) |
145 | LSR (tmp) | |
146 | ADD (tmp, x) | |
147 | ROR (tmp) | |
86f35aa4 | 148 | LSR (tmp) |
86f35aa4 TG |
149 | LSR (tmp) |
150 | ADD (tmp, x) | |
151 | ROR (tmp) | |
152 | ADD (tmp, x) | |
153 | ROR (tmp) | |
86f35aa4 | 154 | LSR (tmp) |
86f35aa4 | 155 | LSR (tmp) |
c2693411 | 156 | MOV (x, tmp) |
6bc3ca83 | 157 | #undef tmp |
e98ab46f TG |
158 | Ml = i2<<6 | i1>>2; |
159 | Mh = i3<<6 | i2>>2; | |
dbf91c38 | 160 | RCALL mod3(); |
e4f7baf0 TG |
161 | SUB (t, n) |
162 | NEG (t) | |
902cfdea | 163 | SUBI (t, -8) |
9401049b | 164 | LDI (o, 1) |
965274e2 | 165 | RCALL g(); |
46a8d83c | 166 | ADD (acc, t) |
bfce2f8c | 167 | |
95fa231f | 168 | putchar(acc<<4); //TODO |
89f35588 | 169 | SUBI (i0, -1) |
95fa231f TG |
170 | ADC (i1, zero, !i0) |
171 | ADC (i2, zero, !i0&&!i1) | |
172 | ADC (i3, zero, !i0&&!i1&&!i2) | |
fe9a76e4 | 173 | } |
61fab018 | 174 | } |