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annotate z80_to_x86.h @ 1971:80920c21bb52

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Add an event log soft flush and call it twice per frame in between hard flushes to netplay latency when there are insufficient hardware updates to flush packets in the middle of a frame
author Michael Pavone <pavone@retrodev.com>
date Fri, 08 May 2020 11:40:30 -0700
parents 2e6320d261ff
children f6d5bde4d07f
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1 /*
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2 Copyright 2013 Michael Pavone
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3 This file is part of BlastEm.
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4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
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5 */
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6 #ifndef Z80_TO_X86_H_
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7 #define Z80_TO_X86_H_
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8 #include "z80inst.h"
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9 #include "backend.h"
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10 #include "serialize.h"
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11
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12 #define ZNUM_MEM_AREAS 4
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13 #ifdef Z80_LOG_ADDRESS
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14 #define ZMAX_NATIVE_SIZE 255
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15 #else
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16 #define ZMAX_NATIVE_SIZE 160
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17 #endif
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18
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19 enum {
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20 ZF_C = 0,
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21 ZF_N,
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22 ZF_PV,
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23 ZF_H,
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24 ZF_Z,
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25 ZF_S,
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26 ZF_XY,
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27 ZF_NUM
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28 };
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29
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30 typedef struct z80_context z80_context;
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31 typedef void (*z80_ctx_fun)(z80_context * context);
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32
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33 typedef struct {
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34 cpu_options gen;
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35 code_ptr save_context_scratch;
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36 code_ptr load_context_scratch;
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37 code_ptr native_addr;
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38 code_ptr retrans_stub;
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39 code_ptr do_sync;
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40 code_ptr read_8;
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41 code_ptr write_8;
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42 code_ptr read_8_noinc;
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43 code_ptr write_8_noinc;
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44 code_ptr read_16;
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45 code_ptr write_16_highfirst;
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46 code_ptr write_16_lowfirst;
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47 code_ptr read_io;
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48 code_ptr write_io;
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49
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50 uint32_t flags;
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51 int8_t regs[Z80_UNUSED];
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52 z80_ctx_fun run;
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53 } z80_options;
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54
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55 struct z80_context {
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56 void * native_pc;
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57 uint16_t sp;
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58 uint8_t flags[ZF_NUM];
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59 uint16_t bank_reg;
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60 uint8_t regs[Z80_A+1];
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61 uint8_t im;
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62 uint8_t alt_regs[Z80_A+1];
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63 uint32_t target_cycle;
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64 uint32_t current_cycle;
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65 uint8_t alt_flags[ZF_NUM];
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66 uint8_t * mem_pointers[ZNUM_MEM_AREAS];
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67 uint8_t iff1;
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68 uint8_t iff2;
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69 uint16_t scratch1;
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70 uint16_t scratch2;
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71 void * extra_pc;
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72 uint32_t sync_cycle;
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73 uint32_t int_cycle;
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74 z80_options * options;
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75 void * system;
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76 uint32_t int_enable_cycle;
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77 uint16_t pc;
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78 uint32_t int_pulse_start;
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79 uint32_t int_pulse_end;
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80 uint32_t nmi_start;
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81 uint8_t breakpoint_flags[(16 * 1024)/sizeof(uint8_t)];
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82 uint8_t * bp_handler;
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83 uint8_t * bp_stub;
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84 uint8_t * interp_code[256];
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85 z80_ctx_fun next_int_pulse;
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86 uint8_t reset;
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87 uint8_t busreq;
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88 uint8_t busack;
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89 uint8_t int_is_nmi;
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90 uint8_t im2_vector;
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91 uint8_t ram_code_flags[];
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92 };
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93
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94 void translate_z80_stream(z80_context * context, uint32_t address);
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95 void init_z80_opts(z80_options * options, memmap_chunk const * chunks, uint32_t num_chunks, memmap_chunk const * io_chunks, uint32_t num_io_chunks, uint32_t clock_divider, uint32_t io_address_mask);
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96 void z80_options_free(z80_options *opts);
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97 z80_context * init_z80_context(z80_options * options);
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98 code_ptr z80_get_native_address(z80_context * context, uint32_t address);
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99 code_ptr z80_get_native_address_trans(z80_context * context, uint32_t address);
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100 z80_context * z80_handle_code_write(uint32_t address, z80_context * context);
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101 void z80_invalidate_code_range(z80_context *context, uint32_t start, uint32_t end);
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102 void z80_reset(z80_context * context);
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103 void zinsert_breakpoint(z80_context * context, uint16_t address, uint8_t * bp_handler);
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104 void zremove_breakpoint(z80_context * context, uint16_t address);
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105 void z80_run(z80_context * context, uint32_t target_cycle);
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106 void z80_assert_reset(z80_context * context, uint32_t cycle);
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107 void z80_clear_reset(z80_context * context, uint32_t cycle);
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108 void z80_assert_busreq(z80_context * context, uint32_t cycle);
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109 void z80_clear_busreq(z80_context * context, uint32_t cycle);
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110 void z80_assert_nmi(z80_context *context, uint32_t cycle);
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111 uint8_t z80_get_busack(z80_context * context, uint32_t cycle);
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112 void z80_adjust_cycles(z80_context * context, uint32_t deduction);
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113 void z80_serialize(z80_context *context, serialize_buffer *buf);
4e5797b3935a WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
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114 void z80_deserialize(deserialize_buffer *buf, void *vcontext);
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4d4559b04c59 Make reset trigger debug exit to make it easier to test the same cases in blastem and musashi. Fix asl #1 overflow flag.
Mike Pavone <pavone@retrodev.com>
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4d4559b04c59 Make reset trigger debug exit to make it easier to test the same cases in blastem and musashi. Fix asl #1 overflow flag.
Mike Pavone <pavone@retrodev.com>
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116 #endif //Z80_TO_X86_H_
4d4559b04c59 Make reset trigger debug exit to make it easier to test the same cases in blastem and musashi. Fix asl #1 overflow flag.
Mike Pavone <pavone@retrodev.com>
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117