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annotate z80inst.c @ 200:d3066ceb29d1

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Add support for EXTD group 2-byte Z80 instructions in decoder
author Mike Pavone <pavone@retrodev.com>
date Sun, 20 Jan 2013 21:32:13 -0800
parents 69585e7d474f
children 2d2fa345e1fc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
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1 #include "z80inst.h"
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2 #include <string.h>
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3 #include <stdio.h>
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4
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
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5 #define NOP {Z80_NOP, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0}
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
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6
199
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7 z80inst z80_tbl_a[256] = {
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8 //0
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
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9 NOP,
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
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10 {Z80_LD, Z80_BC, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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11 {Z80_LD, Z80_A, Z80_REG_INDIRECT | Z80_DIR, Z80_BC, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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12 {Z80_INC, Z80_BC, Z80_UNUSED, Z80_UNUSED, 0},
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13 {Z80_INC, Z80_B, Z80_UNUSED, Z80_UNUSED, 0},
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14 {Z80_DEC, Z80_B, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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15 {Z80_LD, Z80_B, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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16 {Z80_RLC, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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17 {Z80_EX, Z80_AF, Z80_REG, Z80_AF, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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18 {Z80_ADD, Z80_HL, Z80_REG, Z80_BC, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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19 {Z80_LD, Z80_A, Z80_REG_INDIRECT, Z80_BC, 0},
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20 {Z80_DEC, Z80_BC, Z80_UNUSED, Z80_UNUSED, 0},
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21 {Z80_INC, Z80_C, Z80_UNUSED, Z80_UNUSED, 0},
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22 {Z80_DEC, Z80_C, Z80_UNUSED, Z80_UNUSED, 0},
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23 {Z80_LD, Z80_C, Z80_IMMED, Z80_UNUSED, 0},
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24 {Z80_RRC, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
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25 //1
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26 {Z80_DJNZ, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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27 {Z80_LD, Z80_DE, Z80_IMMED, Z80_UNUSED, 0},
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28 {Z80_LD, Z80_A, Z80_REG_INDIRECT | Z80_DIR, Z80_DE, 0},
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29 {Z80_INC, Z80_DE, Z80_UNUSED, Z80_UNUSED, 0},
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30 {Z80_INC, Z80_D, Z80_UNUSED, Z80_UNUSED, 0},
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31 {Z80_DEC, Z80_D, Z80_UNUSED, Z80_UNUSED, 0},
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32 {Z80_LD, Z80_D, Z80_IMMED, Z80_UNUSED, 0},
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33 {Z80_RL, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
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34 {Z80_JR, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0},
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35 {Z80_ADD, Z80_HL, Z80_REG, Z80_DE, 0},
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36 {Z80_LD, Z80_A, Z80_REG_INDIRECT, Z80_DE, 0},
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37 {Z80_DEC, Z80_DE, Z80_UNUSED, Z80_UNUSED, 0},
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38 {Z80_INC, Z80_E, Z80_UNUSED, Z80_UNUSED, 0},
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39 {Z80_DEC, Z80_E, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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40 {Z80_LD, Z80_E, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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41 {Z80_RR, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
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42 //2
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43 {Z80_JRCC, Z80_CC_NZ, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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44 {Z80_LD, Z80_HL, Z80_IMMED, Z80_UNUSED, 0},
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45 {Z80_LD, Z80_HL, Z80_IMMED_INDIRECT | Z80_DIR, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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46 {Z80_INC, Z80_HL, Z80_UNUSED, Z80_UNUSED, 0},
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47 {Z80_INC, Z80_H, Z80_UNUSED, Z80_UNUSED, 0},
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48 {Z80_DEC, Z80_H, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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49 {Z80_LD, Z80_H, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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50 {Z80_DAA, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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51 {Z80_JRCC, Z80_CC_Z, Z80_IMMED, Z80_UNUSED, 0},
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52 {Z80_ADD, Z80_HL, Z80_REG, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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53 {Z80_LD, Z80_HL, Z80_IMMED_INDIRECT, Z80_IMMED, 0},
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54 {Z80_DEC, Z80_HL, Z80_UNUSED, Z80_UNUSED, 0},
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55 {Z80_INC, Z80_L, Z80_UNUSED, Z80_UNUSED, 0},
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56 {Z80_DEC, Z80_L, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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57 {Z80_LD, Z80_L, Z80_IMMED, Z80_UNUSED, 0},
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58 {Z80_CPL, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
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59 //3
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60 {Z80_JRCC, Z80_CC_NC, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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61 {Z80_LD, Z80_SP, Z80_IMMED, Z80_UNUSED, 0},
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62 {Z80_LD, Z80_A, Z80_IMMED_INDIRECT | Z80_DIR, Z80_UNUSED, 0},
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63 {Z80_INC, Z80_SP, Z80_UNUSED, Z80_UNUSED, 0},
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64 {Z80_INC, Z80_UNUSED, Z80_REG_INDIRECT, Z80_HL, 0},
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65 {Z80_DEC, Z80_UNUSED, Z80_REG_INDIRECT, Z80_HL, 0},
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66 {Z80_LD, Z80_USE_IMMED, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
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67 {Z80_SCF, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
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68 {Z80_JRCC, Z80_CC_C, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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69 {Z80_ADD, Z80_HL, Z80_REG, Z80_SP, 0},
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70 {Z80_LD, Z80_A, Z80_IMMED_INDIRECT, Z80_IMMED, 0},
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71 {Z80_DEC, Z80_SP, Z80_UNUSED, Z80_UNUSED, 0},
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72 {Z80_INC, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
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73 {Z80_DEC, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
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74 {Z80_LD, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
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75 {Z80_CCF, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
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76 //4
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77 {Z80_LD, Z80_B, Z80_REG, Z80_B, 0},
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78 {Z80_LD, Z80_B, Z80_REG, Z80_C, 0},
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79 {Z80_LD, Z80_B, Z80_REG, Z80_D, 0},
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80 {Z80_LD, Z80_B, Z80_REG, Z80_E, 0},
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81 {Z80_LD, Z80_B, Z80_REG, Z80_H, 0},
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82 {Z80_LD, Z80_B, Z80_REG, Z80_L, 0},
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83 {Z80_LD, Z80_B, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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84 {Z80_LD, Z80_B, Z80_REG, Z80_A, 0},
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85 {Z80_LD, Z80_C, Z80_REG, Z80_B, 0},
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86 {Z80_LD, Z80_C, Z80_REG, Z80_C, 0},
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87 {Z80_LD, Z80_C, Z80_REG, Z80_D, 0},
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88 {Z80_LD, Z80_C, Z80_REG, Z80_E, 0},
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89 {Z80_LD, Z80_C, Z80_REG, Z80_H, 0},
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90 {Z80_LD, Z80_C, Z80_REG, Z80_L, 0},
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91 {Z80_LD, Z80_C, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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92 {Z80_LD, Z80_C, Z80_REG, Z80_A, 0},
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93 //5
69585e7d474f Add initial stab at Z80 decoder and disassembler
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94 {Z80_LD, Z80_D, Z80_REG, Z80_B, 0},
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95 {Z80_LD, Z80_D, Z80_REG, Z80_C, 0},
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96 {Z80_LD, Z80_D, Z80_REG, Z80_D, 0},
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97 {Z80_LD, Z80_D, Z80_REG, Z80_E, 0},
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98 {Z80_LD, Z80_D, Z80_REG, Z80_H, 0},
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99 {Z80_LD, Z80_D, Z80_REG, Z80_L, 0},
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100 {Z80_LD, Z80_D, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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101 {Z80_LD, Z80_D, Z80_REG, Z80_A, 0},
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102 {Z80_LD, Z80_E, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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103 {Z80_LD, Z80_E, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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104 {Z80_LD, Z80_E, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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105 {Z80_LD, Z80_E, Z80_REG, Z80_E, 0},
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106 {Z80_LD, Z80_E, Z80_REG, Z80_H, 0},
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107 {Z80_LD, Z80_E, Z80_REG, Z80_L, 0},
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108 {Z80_LD, Z80_E, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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109 {Z80_LD, Z80_E, Z80_REG, Z80_A, 0},
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110 //6
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111 {Z80_LD, Z80_H, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
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parents:
diff changeset
112 {Z80_LD, Z80_H, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
113 {Z80_LD, Z80_H, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
114 {Z80_LD, Z80_H, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
115 {Z80_LD, Z80_H, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
116 {Z80_LD, Z80_H, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
117 {Z80_LD, Z80_H, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
118 {Z80_LD, Z80_H, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
119 {Z80_LD, Z80_L, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
120 {Z80_LD, Z80_L, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
121 {Z80_LD, Z80_L, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
122 {Z80_LD, Z80_L, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
123 {Z80_LD, Z80_L, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
124 {Z80_LD, Z80_L, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
125 {Z80_LD, Z80_L, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
126 {Z80_LD, Z80_L, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
127 //7
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
128 {Z80_LD, Z80_B, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
129 {Z80_LD, Z80_C, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
130 {Z80_LD, Z80_D, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
131 {Z80_LD, Z80_E, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
132 {Z80_LD, Z80_H, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
133 {Z80_LD, Z80_L, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
134 {Z80_HALT, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
135 {Z80_LD, Z80_A, Z80_REG_INDIRECT | Z80_DIR, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
136 {Z80_LD, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
137 {Z80_LD, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
138 {Z80_LD, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
139 {Z80_LD, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
140 {Z80_LD, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
141 {Z80_LD, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
142 {Z80_LD, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
143 {Z80_LD, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
144 //8
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
145 {Z80_ADD, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
146 {Z80_ADD, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
147 {Z80_ADD, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
148 {Z80_ADD, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
149 {Z80_ADD, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
150 {Z80_ADD, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
151 {Z80_ADD, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
152 {Z80_ADD, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
153 {Z80_ADC, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
154 {Z80_ADC, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
155 {Z80_ADC, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
156 {Z80_ADC, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
157 {Z80_ADC, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
158 {Z80_ADC, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
159 {Z80_ADC, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
160 {Z80_ADC, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
161 //9
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
162 {Z80_SUB, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
163 {Z80_SUB, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
164 {Z80_SUB, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
165 {Z80_SUB, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
166 {Z80_SUB, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
167 {Z80_SUB, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
168 {Z80_SUB, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
169 {Z80_SUB, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
170 {Z80_SBC, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
171 {Z80_SBC, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
172 {Z80_SBC, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
173 {Z80_SBC, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
174 {Z80_SBC, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
175 {Z80_SBC, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
176 {Z80_SBC, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
177 {Z80_SBC, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
178 //A
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
179 {Z80_AND, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
180 {Z80_AND, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
181 {Z80_AND, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
182 {Z80_AND, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
183 {Z80_AND, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
184 {Z80_AND, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
185 {Z80_AND, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
186 {Z80_AND, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
187 {Z80_XOR, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
188 {Z80_XOR, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
189 {Z80_XOR, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
190 {Z80_XOR, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
191 {Z80_XOR, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
192 {Z80_XOR, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
193 {Z80_XOR, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
194 {Z80_XOR, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
195 //B
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
196 {Z80_OR, Z80_A, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
197 {Z80_OR, Z80_A, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
198 {Z80_OR, Z80_A, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
199 {Z80_OR, Z80_A, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
200 {Z80_OR, Z80_A, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
201 {Z80_OR, Z80_A, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
202 {Z80_OR, Z80_A, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
203 {Z80_OR, Z80_A, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
204 {Z80_OR, Z80_CP, Z80_REG, Z80_B, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
205 {Z80_OR, Z80_CP, Z80_REG, Z80_C, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
206 {Z80_OR, Z80_CP, Z80_REG, Z80_D, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
207 {Z80_OR, Z80_CP, Z80_REG, Z80_E, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
208 {Z80_OR, Z80_CP, Z80_REG, Z80_H, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
209 {Z80_OR, Z80_CP, Z80_REG, Z80_L, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
210 {Z80_OR, Z80_CP, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
211 {Z80_OR, Z80_CP, Z80_REG, Z80_A, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
212 //C
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
213 {Z80_RETCC, Z80_CC_NZ, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
214 {Z80_POP, Z80_BC, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
215 {Z80_JPCC, Z80_CC_NZ, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
216 {Z80_JP, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
217 {Z80_CALLCC, Z80_CC_NZ, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
218 {Z80_PUSH, Z80_BC, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
219 {Z80_ADD, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
220 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
221 {Z80_RETCC, Z80_CC_Z, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
222 {Z80_RET, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
223 {Z80_JPCC, Z80_CC_Z, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
224 {0, 0, 0, 0, 0},//BITS Prefix
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
225 {Z80_CALLCC, Z80_CC_Z, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
226 {Z80_CALL, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
227 {Z80_ADC, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
228 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x8},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
229 //D
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
230 {Z80_RETCC, Z80_CC_NC, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
231 {Z80_POP, Z80_DE, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
232 {Z80_JPCC, Z80_CC_NC, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
233 {Z80_OUT, Z80_A, Z80_IMMED_INDIRECT, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
234 {Z80_CALLCC, Z80_CC_NC, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
235 {Z80_PUSH, Z80_DE, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
236 {Z80_SUB, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
237 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x10},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
238 {Z80_RETCC, Z80_CC_C, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
239 {Z80_EXX, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
240 {Z80_JPCC, Z80_CC_C, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
241 {Z80_IN, Z80_A, Z80_IMMED_INDIRECT, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
242 {Z80_CALLCC, Z80_CC_C, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
243 {0, 0, 0, 0, 0},//IX Prefix
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
244 {Z80_SBC, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
245 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x18},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
246 //E
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
247 {Z80_RETCC, Z80_CC_PO, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
248 {Z80_POP, Z80_HL, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
249 {Z80_JPCC, Z80_CC_PO, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
250 {Z80_EX, Z80_HL, Z80_REG_INDIRECT | Z80_DIR, Z80_SP, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
251 {Z80_CALLCC, Z80_CC_PO, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
252 {Z80_PUSH, Z80_HL, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
253 {Z80_AND, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
254 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x20},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
255 {Z80_RETCC, Z80_CC_PE, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
256 {Z80_JP, Z80_UNUSED, Z80_REG_INDIRECT, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
257 {Z80_JPCC, Z80_CC_PE, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
258 {Z80_EX, Z80_DE, Z80_REG, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
259 {Z80_CALLCC, Z80_CC_PE, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
260 {0, 0, 0, 0, 0},//EXTD Prefix
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
261 {Z80_XOR, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
262 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x28},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
263 //F
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
264 {Z80_RETCC, Z80_CC_P, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
265 {Z80_POP, Z80_AF, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
266 {Z80_JPCC, Z80_CC_P, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
267 {Z80_DI, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
268 {Z80_CALLCC, Z80_CC_P, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
269 {Z80_PUSH, Z80_AF, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
270 {Z80_OR, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
271 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x30},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
272 {Z80_RETCC, Z80_CC_M, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
273 {Z80_LD, Z80_SP, Z80_REG, Z80_HL, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
274 {Z80_JPCC, Z80_CC_M, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
275 {Z80_EI, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
276 {Z80_CALLCC, Z80_CC_M, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
277 {0, 0, 0, 0, 0},//IY Prefix
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
278 {Z80_CP, Z80_A, Z80_IMMED, Z80_UNUSED, 0},
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
279 {Z80_RST, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0x38}
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
280 };
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
281
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
282 z80inst z80_tbl_extd[0xC0-0x40] = {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
283 //4
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
284 {Z80_IN, Z80_B, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
285 {Z80_OUT, Z80_B, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
286 {Z80_SBC, Z80_HL, Z80_REG, Z80_BC, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
287 {Z80_LD, Z80_BC, Z80_IMMED_INDIRECT | Z80_DIR, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
288 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
289 {Z80_RETN, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
290 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
291 {Z80_LD, Z80_I, Z80_REG, Z80_A, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
292 {Z80_IN, Z80_C, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
293 {Z80_OUT, Z80_C, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
294 {Z80_ADC, Z80_HL, Z80_REG, Z80_BC, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
295 {Z80_LD, Z80_BC, Z80_IMMED_INDIRECT, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
296 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
297 {Z80_RETI, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
298 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 3},//Set undocumented mode 0/1
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
299 {Z80_LD, Z80_R, Z80_REG, Z80_A, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
300 //5
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
301 {Z80_IN, Z80_D, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
302 {Z80_OUT, Z80_D, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
303 {Z80_SBC, Z80_HL, Z80_REG, Z80_DE, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
304 {Z80_LD, Z80_DE, Z80_IMMED_INDIRECT | Z80_DIR, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
305 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
306 {Z80_RETN, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
307 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 1},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
308 {Z80_LD, Z80_A, Z80_REG, Z80_I, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
309 {Z80_IN, Z80_E, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
310 {Z80_OUT, Z80_E, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
311 {Z80_ADC, Z80_HL, Z80_REG, Z80_DE, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
312 {Z80_LD, Z80_DE, Z80_IMMED_INDIRECT, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
313 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
314 {Z80_RETN, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
315 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 2},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
316 {Z80_LD, Z80_A, Z80_REG, Z80_R, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
317 //6
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
318 {Z80_IN, Z80_H, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
319 {Z80_OUT, Z80_H, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
320 {Z80_SBC, Z80_HL, Z80_REG, Z80_HL, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
321 {Z80_LD, Z80_HL, Z80_IMMED_INDIRECT | Z80_DIR, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
322 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
323 {Z80_RETN, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
324 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
325 {Z80_RRD, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
326 {Z80_IN, Z80_L, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
327 {Z80_OUT, Z80_L, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
328 {Z80_ADC, Z80_HL, Z80_REG, Z80_HL, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
329 {Z80_LD, Z80_HL, Z80_IMMED_INDIRECT, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
330 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
331 {Z80_RETN, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
332 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 3},//Set undocumented mode 0/1
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
333 {Z80_RLD, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
334 //7
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
335 {Z80_IN, Z80_UNUSED, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
336 {Z80_OUT, Z80_USE_IMMED, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
337 {Z80_SBC, Z80_HL, Z80_REG, Z80_SP, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
338 {Z80_LD, Z80_SP, Z80_IMMED_INDIRECT | Z80_DIR, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
339 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
340 {Z80_RETN, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
341 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 1},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
342 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
343 {Z80_IN, Z80_A, Z80_REG_INDIRECT, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
344 {Z80_OUT, Z80_A, Z80_REG_INDIRECT | Z80_DIR, Z80_C, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
345 {Z80_ADC, Z80_HL, Z80_REG, Z80_SP, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
346 {Z80_LD, Z80_SP, Z80_IMMED_INDIRECT, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
347 {Z80_NEG, Z80_A, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
348 {Z80_RETN, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
349 {Z80_IM, Z80_UNUSED, Z80_IMMED, Z80_UNUSED, 2},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
350 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
351 //8
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
352 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
353 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
354 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
355 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
356 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
357 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
358 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
359 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
360 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
361 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
362 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
363 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
364 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
365 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
366 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
367 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
368 //9
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
369 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
370 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
371 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
372 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
373 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
374 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
375 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
376 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
377 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
378 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
379 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
380 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
381 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
382 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
383 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
384 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
385 //A
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
386 {Z80_LDI, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
387 {Z80_CPI, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
388 {Z80_INI, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
389 {Z80_OUTI, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
390 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
391 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
392 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
393 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
394 {Z80_LDD, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
395 {Z80_CPD, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
396 {Z80_IND, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
397 {Z80_OUTD, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
398 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
399 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
400 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
401 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
402 //B
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
403 {Z80_LDIR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
404 {Z80_CPIR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
405 {Z80_INIR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
406 {Z80_OTIR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
407 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
408 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
409 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
410 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
411 {Z80_LDDR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
412 {Z80_CPDR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
413 {Z80_INDR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
414 {Z80_OTDR, Z80_UNUSED, Z80_UNUSED, Z80_UNUSED, 0},
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
415 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
416 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
417 NOP,
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
418 NOP
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
419 };
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
420
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
421 uint8_t * z80_decode(uint8_t * istream, z80inst * decoded)
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
422 {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
423 if (*istream == 0xCB) {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
424 } else if (*istream == 0xDD) {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
425 } else if (*istream == 0xED) {
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
426 istream++;
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
427 if (*istream < 0x40 || *istream >= 0xC0) {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
428 memcpy(decoded, z80_tbl_extd + 0xBF, sizeof(z80inst));
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
429 } else {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
430 memcpy(decoded, z80_tbl_extd + *istream-0x40, sizeof(z80inst));
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
431 }
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
432 } else if (*istream == 0xFD) {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
433 } else {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
434 memcpy(decoded, z80_tbl_a + *istream, sizeof(z80inst));
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
435
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
436 }
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
437 if ((decoded->addr_mode & 0xF) == Z80_IMMED && decoded->op != Z80_RST && decoded->op != Z80_IM) {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
438 decoded->immed = *(++istream);
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
439 if (decoded->reg >= Z80_BC && decoded->reg < Z80_USE_IMMED) {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
440 decoded->immed |= *(++istream) << 8;
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
441 } else if (decoded->immed & 0x80) {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
442 decoded->immed |= 0xFF00;
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
443 }
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
444 } else if ((decoded->addr_mode & 0xF) == Z80_IMMED_INDIRECT) {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
445 decoded->immed = *(++istream);
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
446 if (decoded->op != Z80_OUT && decoded->op != Z80_IN) {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
447 decoded->immed |= *(++istream) << 8;
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
448 }
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
449 } else if (decoded->reg == Z80_USE_IMMED) {
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
450 decoded->immed = *(++istream);
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
451 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
452 return istream+1;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
453 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
454
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
455 char *z80_mnemonics[Z80_OTDR+1] = {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
456 "ld",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
457 "push",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
458 "pop",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
459 "ex",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
460 "exx",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
461 "ldi",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
462 "ldir",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
463 "ldd",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
464 "lddr",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
465 "cpi",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
466 "cpir",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
467 "cpd",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
468 "cpdr",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
469 "add",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
470 "adc",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
471 "sub",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
472 "sbc",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
473 "and",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
474 "or",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
475 "xor",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
476 "cp",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
477 "inc",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
478 "dec",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
479 "daa",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
480 "cpl",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
481 "neg",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
482 "ccf",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
483 "scf",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
484 "nop",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
485 "halt",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
486 "di",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
487 "ei",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
488 "im",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
489 "rlc",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
490 "rl",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
491 "rrc",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
492 "rr",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
493 "sl",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
494 "rld",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
495 "rrd",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
496 "bit",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
497 "set",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
498 "res",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
499 "jp",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
500 "jp",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
501 "jr",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
502 "jr",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
503 "djnz",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
504 "call",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
505 "call",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
506 "ret",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
507 "ret",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
508 "reti",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
509 "retn",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
510 "rst",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
511 "in",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
512 "ini",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
513 "inir",
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
514 "ind",
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
515 "indr",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
516 "out",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
517 "outi",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
518 "otir",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
519 "outd",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
520 "otdr"
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
521 };
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
522
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
523 char * z80_regs[Z80_USE_IMMED] = {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
524 "b",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
525 "c",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
526 "d",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
527 "e",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
528 "h",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
529 "l",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
530 "",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
531 "a",
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
532 "i",
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
533 "r",
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
534 "bc",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
535 "de",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
536 "hl",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
537 "sp",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
538 "af",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
539 };
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
540
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
541 char * z80_conditions[Z80_CC_M+1] = {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
542 "nz",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
543 "z",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
544 "nc",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
545 "c",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
546 "po",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
547 "pe",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
548 "p",
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
549 "m"
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
550 };
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
551
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
552 int z80_disasm(z80inst * decoded, char * dst)
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
553 {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
554 int len = sprintf(dst, "%s", z80_mnemonics[decoded->op]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
555 if (decoded->addr_mode & Z80_DIR) {
200
d3066ceb29d1 Add support for EXTD group 2-byte Z80 instructions in decoder
Mike Pavone <pavone@retrodev.com>
parents: 199
diff changeset
556 switch (decoded->addr_mode & 0xF)
199
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
557 {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
558 case Z80_REG:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
559 len += sprintf(dst+len, " %s", z80_regs[decoded->ea_reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
560 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
561 case Z80_REG_INDIRECT:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
562 len += sprintf(dst+len, " (%s)", z80_regs[decoded->ea_reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
563 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
564 case Z80_IMMED:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
565 len += sprintf(dst+len, " %d", decoded->immed);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
566 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
567 case Z80_IMMED_INDIRECT:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
568 len += sprintf(dst+len, " (%d)", decoded->immed);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
569 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
570 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
571 if (decoded->reg != Z80_UNUSED) {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
572 if (decoded->op == Z80_JRCC || decoded->op == Z80_JPCC || decoded->op == Z80_CALLCC || decoded->op == Z80_RETCC) {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
573 len += sprintf(dst+len, "%s %s", decoded->reg == Z80_UNUSED ? "" : "," , z80_conditions[decoded->reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
574 } else {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
575 len += sprintf(dst+len, "%s %s", decoded->reg == Z80_UNUSED ? "" : "," , z80_regs[decoded->reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
576 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
577 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
578 } else {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
579 if (decoded->reg != Z80_UNUSED) {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
580 if (decoded->op == Z80_JRCC || decoded->op == Z80_JPCC || decoded->op == Z80_CALLCC || decoded->op == Z80_RETCC) {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
581 len += sprintf(dst+len, " %s", z80_conditions[decoded->reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
582 } else {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
583 len += sprintf(dst+len, " %s", z80_regs[decoded->reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
584 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
585 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
586 switch (decoded->addr_mode)
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
587 {
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
588 case Z80_REG:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
589 len += sprintf(dst+len, "%s %s", decoded->reg == Z80_UNUSED ? "" : "," , z80_regs[decoded->ea_reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
590 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
591 case Z80_REG_INDIRECT:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
592 len += sprintf(dst+len, "%s (%s)", decoded->reg == Z80_UNUSED ? "" : "," , z80_regs[decoded->ea_reg]);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
593 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
594 case Z80_IMMED:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
595 len += sprintf(dst+len, "%s %d", decoded->reg == Z80_UNUSED ? "" : "," , decoded->immed);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
596 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
597 case Z80_IMMED_INDIRECT:
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
598 len += sprintf(dst+len, "%s (%d)", decoded->reg == Z80_UNUSED ? "" : "," , decoded->immed);
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
599 break;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
600 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
601 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
602 return len;
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
603 }
69585e7d474f Add initial stab at Z80 decoder and disassembler
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
604