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annotate jagcpu.h @ 1860:bdca98187c9f

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Reorder controllers based on which one receives player input first
author Michael Pavone <pavone@retrodev.com>
date Fri, 03 May 2019 18:40:13 -0700
parents c48d5191ddc9
children
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1 #ifndef JAGCPU_H_
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2 #define JAGCPU_H_
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3
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4 enum {
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5 JAG_ADD,
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6 JAG_ADDC,
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7 JAG_ADDQ,
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8 JAG_ADDQT,
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9 JAG_SUB,
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10 JAG_SUBC,
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11 JAG_SUBQ,
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12 JAG_SUBQT,
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13 JAG_NEG,
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14 JAG_AND,
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15 JAG_OR,
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16 JAG_XOR,
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17 JAG_NOT,
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18 JAG_BTST,
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19 JAG_BSET,
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20 JAG_BCLR,
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21 JAG_MULT,
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22 JAG_IMULT,
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23 JAG_IMULTN,
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24 JAG_RESMAC,
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25 JAG_IMACN,
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26 JAG_DIV,
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27 JAG_ABS,
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28 JAG_SH,
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29 JAG_SHLQ,
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30 JAG_SHRQ,
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31 JAG_SHA,
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32 JAG_SHARQ,
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33 JAG_ROR,
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34 JAG_RORQ,
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35 JAG_CMP,
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36 JAG_CMPQ,
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37 GPU_SAT8,
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38 DSP_SUBQMOD = GPU_SAT8,
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39 GPU_SAT16,
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40 DSP_SAT16S = GPU_SAT16,
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41 JAG_MOVE,
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42 JAG_MOVEQ,
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43 JAG_MOVETA,
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44 JAG_MOVEFA,
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45 JAG_MOVEI,
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46 JAG_LOADB,
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47 JAG_LOADW,
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48 JAG_LOAD,
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49 GPU_LOADP,
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50 DSP_SAT32S = GPU_LOADP,
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51 JAG_LOAD_R14_REL,
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52 JAG_LOAD_R15_REL,
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53 JAG_STOREB,
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54 JAG_STOREW,
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55 JAG_STORE,
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56 GPU_STOREP,
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57 DSP_MIRROR = GPU_STOREP,
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58 JAG_STORE_R14_REL,
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59 JAG_STORE_R15_REL,
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60 JAG_MOVE_PC,
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61 JAG_JUMP,
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62 JAG_JR,
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63 JAG_MMULT,
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64 JAG_MTOI,
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65 JAG_NORMI,
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66 JAG_NOP,
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67 JAG_LOAD_R14_INDEXED,
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68 JAG_LOAD_R15_INDEXED,
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69 JAG_STORE_R14_INDEXED,
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70 JAG_STORE_R15_INDEXED,
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71 GPU_SAT24,
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72 GPU_PACK,
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73 DSP_ADDQMOD = GPU_PACK,
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74 GPU_UNPACK //virtual opcode, UNPACK is PACK with a reg1 field set to 1
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75 };
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76
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77 #define JAGCPU_NOREG -1
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78
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79
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80 typedef struct {
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81 cpu_options gen;
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82 int8_t regs[32];
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83 int8_t result;
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84 int8_t resultreg;
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85 int8_t bankptr;
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86 uint8_t is_gpu;
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87 } jag_cpu_options;
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88
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89 typedef struct {
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90 uint32_t read_high;
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91 } jag_gpu;
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92
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93 typedef struct {
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94 uint8_t mac_high;
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95 uint8_t modulo;
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96 } jag_dsp;
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97
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98 typedef struct {
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99 uint32_t cycles;
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100 uint32_t regs[64];
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101 uint32_t *main;
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102 uint32_t *alt;
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103 uint32_t pc;
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104 uint32_t result;
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105 uint32_t flags;
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106 uint32_t flags_pending;
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107 uint32_t remainder;
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108 union {
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109 jag_gpu gpu;
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110 jag_dsp dsp;
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111 };
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112 int8_t writeback;
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113 int8_t resultreg;
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114 uint8_t is_gpu;
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115 } jag_cpu;
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116
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117 uint16_t jag_opcode(uint16_t inst, uint8_t is_gpu);
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118 char * jag_cc(uint16_t inst);
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119 uint16_t jag_reg2(uint16_t inst);
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120 uint32_t jag_jr_dest(uint16_t inst, uint32_t address);
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121 int jag_cpu_disasm(uint16_t **stream, uint32_t address, char *dst, uint8_t is_gpu, uint8_t labels);
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122
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123 #endif