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@@ -29,19 +29,21 @@ Uint8 peek8(Stack *s, Uint8 a) { return s->dat[s->ptr - a - 1]; }
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29
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29
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void push16(Stack *s, Uint16 a) { push8(s, a >> 8); push8(s, a); }
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30
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30
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Uint16 pop16(Stack *s) { return pop8(s) + (pop8(s) << 8); }
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31
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31
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Uint16 peek16(Stack *s, Uint8 a) { return peek8(s, a * 2) + (peek8(s, a * 2 + 1) << 8); }
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32
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-/* I/O */
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32
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+/* Core */
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33
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33
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void op_brk(Uxn *u) { setflag(&u->status, FLAG_HALT, 1); }
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34
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34
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void op_lit(Uxn *u) { u->literal += 1; }
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35
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35
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void op_nop(Uxn *u) { (void)u; }
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36
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-void op_jmp(Uxn *u) { Uint8 a = pop8(u->src); u->ram.ptr += (Sint8)a; }
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37
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-void op_jsr(Uxn *u) { Uint8 a = pop8(u->src); push16(u->dst, u->ram.ptr); u->ram.ptr += (Sint8)a; }
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38
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36
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void op_ldr(Uxn *u) { Uint16 a = pop16(u->src); push8(u->src, mempeek8(u, a)); }
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39
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37
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void op_str(Uxn *u) { Uint16 a = pop16(u->src); Uint8 b = pop8(u->src); mempoke8(u, a, b); }
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40
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38
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/* Logic */
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41
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-void op_and(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b & a); }
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42
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-void op_ora(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b | a); }
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43
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-void op_eor(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b ^ a); }
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44
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-void op_sft(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); Uint8 left = (a & 0xf0) >> 4; Uint8 right = (a & 0x0f); push8(u->src, b >> (right % 8) << (left % 8)); }
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39
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+void op_equ(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b == a); }
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40
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+void op_neq(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b != a); }
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41
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+void op_gth(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b > a); }
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42
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+void op_lth(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b < a); }
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43
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+void op_gts(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, (Sint8)b > (Sint8)a); }
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44
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+void op_lts(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, (Sint8)b < (Sint8)a); }
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45
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+void op_jmp(Uxn *u) { Uint8 a = pop8(u->src); u->ram.ptr += (Sint8)a; }
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46
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+void op_jsr(Uxn *u) { Uint8 a = pop8(u->src); push16(u->dst, u->ram.ptr); u->ram.ptr += (Sint8)a; }
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45
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47
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/* Stack */
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46
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48
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void op_pop(Uxn *u) { pop8(u->src); }
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47
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49
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void op_dup(Uxn *u) { push8(u->src, peek8(u->src, 0)); }
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...
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...
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@@ -55,24 +57,24 @@ void op_add(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b
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55
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57
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void op_sub(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b - a); }
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56
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58
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void op_mul(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b * a); }
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57
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59
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void op_div(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b / a); }
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58
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-void op_equ(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b == a); }
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59
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-void op_neq(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b != a); }
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60
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-void op_gth(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b > a); }
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61
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-void op_gts(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, (Sint8)b > (Sint8)a); }
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62
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-void op_lth(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b < a); }
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63
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-void op_lts(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, (Sint8)b < (Sint8)a); }
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64
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-/* --- */
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60
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+void op_and(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b & a); }
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61
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+void op_ora(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b | a); }
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62
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+void op_eor(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); push8(u->src, b ^ a); }
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63
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+void op_sft(Uxn *u) { Uint8 a = pop8(u->src), b = pop8(u->src); Uint8 left = (a & 0xf0) >> 4; Uint8 right = (a & 0x0f); push8(u->src, b >> (right % 8) << (left % 8)); }
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64
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+/* Core */
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65
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65
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void op_lit16(Uxn *u) { u->literal += 2; }
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66
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66
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void op_nop16(Uxn *u) { printf("%04x\n", pop16(u->src)); }
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67
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-void op_jmp16(Uxn *u) { u->ram.ptr = pop16(u->src); }
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68
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-void op_jsr16(Uxn *u) { push16(u->dst, u->ram.ptr); u->ram.ptr = pop16(u->src); }
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69
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67
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void op_ldr16(Uxn *u) { Uint16 a = pop16(u->src); push16(u->src, mempeek16(u, a)); }
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70
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68
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void op_str16(Uxn *u) { Uint16 a = pop16(u->src); Uint16 b = pop16(u->src); mempoke16(u, a, b); }
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71
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-/* Logic */
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72
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-void op_and16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b & a); }
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73
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-void op_ora16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b | a); }
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74
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-void op_eor16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b ^ a); }
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75
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-void op_sft16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); Uint8 left = (a & 0x00f0) >> 4; Uint8 right = (a & 0x000f); push16(u->src, b >> (right % 16) << (left % 16)); }
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69
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+/* Logic(16-bits) */
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70
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+void op_equ16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b == a); }
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71
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+void op_neq16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b != a); }
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72
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+void op_gth16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b > a); }
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73
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+void op_lth16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b < a); }
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74
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+void op_gts16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, (Sint16)b > (Sint16)a); }
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75
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+void op_lts16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, (Sint16)b < (Sint16)a); }
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76
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+void op_jmp16(Uxn *u) { u->ram.ptr = pop16(u->src); }
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77
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+void op_jsr16(Uxn *u) { push16(u->dst, u->ram.ptr); u->ram.ptr = pop16(u->src); }
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76
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78
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/* Stack(16-bits) */
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77
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79
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void op_pop16(Uxn *u) { pop16(u->src); }
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78
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80
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void op_dup16(Uxn *u) { push16(u->src, peek16(u->src, 0)); }
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...
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...
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@@ -86,33 +88,31 @@ void op_add16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->s
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86
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88
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void op_sub16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b - a); }
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87
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89
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void op_mul16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b * a); }
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88
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90
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void op_div16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b / a); }
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89
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-void op_equ16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b == a); }
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90
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-void op_neq16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b != a); }
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91
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-void op_gth16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b > a); }
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92
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-void op_gts16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, (Sint16)b > (Sint16)a); }
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93
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-void op_lth16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, b < a); }
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94
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-void op_lts16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push8(u->src, (Sint16)b < (Sint16)a); }
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91
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+void op_and16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b & a); }
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92
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+void op_ora16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b | a); }
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93
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+void op_eor16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); push16(u->src, b ^ a); }
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94
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+void op_sft16(Uxn *u) { Uint16 a = pop16(u->src), b = pop16(u->src); Uint8 left = (a & 0x00f0) >> 4; Uint8 right = (a & 0x000f); push16(u->src, b >> (right % 16) << (left % 16)); }
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95
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95
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96
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96
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void (*ops[])(Uxn *u) = {
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97
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- op_brk, op_nop, op_lit, op_ldr, op_str, op_nop, op_jmp, op_jsr,
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98
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- op_equ, op_neq, op_gth, op_lth, op_gts, op_lts, op_nop, op_nop,
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97
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+ op_brk, op_nop, op_lit, op_ldr, op_str, op_nop, op_nop, op_nop,
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98
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+ op_equ, op_neq, op_gth, op_lth, op_gts, op_lts, op_jmp, op_jsr,
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99
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99
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op_pop, op_dup, op_swp, op_ovr, op_rot, op_nop, op_cln, op_sth,
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100
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100
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op_add, op_sub, op_mul, op_div, op_and, op_ora, op_eor, op_sft,
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101
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101
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/* 16-bit */
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102
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- op_brk, op_nop16, op_lit16, op_ldr16, op_str16, op_nop, op_jmp16, op_jsr16,
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103
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- op_equ16, op_neq16, op_gth16, op_lth16, op_gts16, op_lts16, op_nop, op_nop,
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102
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+ op_brk, op_nop16, op_lit16, op_ldr16, op_str16, op_nop, op_nop, op_nop,
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103
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+ op_equ16, op_neq16, op_gth16, op_lth16, op_gts16, op_lts16, op_jmp16, op_jsr16,
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104
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104
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op_pop16, op_dup16, op_swp16, op_ovr16, op_rot16, op_nop, op_cln16, op_sth16,
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105
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105
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op_add16, op_sub16, op_mul16, op_div16, op_and16, op_ora16, op_eor16, op_sft16
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106
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106
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};
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107
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107
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108
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108
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Uint8 opr[][4] = { /* wstack-/+ rstack-/+ */
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109
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- {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {2,1,0,0}, {3,0,0,0}, {1,0,0,0}, {1,0,0,0}, {1,0,0,2},
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110
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- {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {0,0,0,0}, {0,0,0,0},
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109
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+ {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {2,1,0,0}, {3,0,0,0}, {1,0,0,0}, {0,0,0,0}, {0,0,0,0},
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110
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+ {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {1,0,0,0}, {1,0,0,2},
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111
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111
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{1,0,0,0}, {0,2,0,0}, {2,2,0,0}, {2,3,0,0}, {3,3,0,0}, {0,0,0,0}, {0,0,0,1}, {0,1,1,0},
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112
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112
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{2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0}, {2,1,0,0},
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113
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113
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/* 16-bit */
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114
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- {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {2,2,0,0}, {4,0,0,0}, {2,0,0,0}, {2,0,0,0}, {2,0,0,2},
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115
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- {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,1,0,0}, {4,1,0,0}, {0,0,0,0}, {0,0,0,0},
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114
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+ {0,0,0,0}, {0,0,0,0}, {0,0,0,0}, {2,2,0,0}, {4,0,0,0}, {2,0,0,0}, {0,0,0,0}, {0,0,0,0},
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115
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+ {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,1,0,0}, {4,1,0,0}, {2,0,0,0}, {2,0,0,2},
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116
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116
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{0,2,0,0}, {0,2,0,0}, {1,1,0,0}, {4,6,0,0}, {6,6,0,0}, {0,0,0,0}, {0,0,0,2}, {0,2,2,0},
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117
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117
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{4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0}, {4,2,0,0},
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118
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118
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};
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