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annotate system.h @ 1925:039553703c20

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Don't apply address and cd register changes to the 'live' registers until pending flag is cleared, but do preserve the upper address bits in the latch. Fixes regression in Overdrive 2 while preserving fix to Mona in 344 bytes
author Michael Pavone <pavone@retrodev.com>
date Mon, 13 Apr 2020 20:43:25 -0700
parents 508522f08e4d
children c3c62dbf1ceb
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1 #ifndef SYSTEM_H_
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2 #define SYSTEM_H_
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3 #include <stddef.h>
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4 #include <stdint.h>
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5
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6 typedef struct system_header system_header;
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7 typedef struct system_media system_media;
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8
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9 typedef enum {
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10 SYSTEM_UNKNOWN,
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11 SYSTEM_GENESIS,
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12 SYSTEM_SMS,
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13 SYSTEM_JAGUAR
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14 } system_type;
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15
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16 typedef enum {
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17 DEBUGGER_NATIVE,
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18 DEBUGGER_GDB
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19 } debugger_type;
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20
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21 typedef void (*system_fun)(system_header *);
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22 typedef uint16_t (*system_fun_r16)(system_header *);
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23 typedef void (*system_str_fun)(system_header *, char *);
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24 typedef uint8_t (*system_str_fun_r8)(system_header *, char *);
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25 typedef void (*system_u32_fun)(system_header *, uint32_t);
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26 typedef void (*system_u8_fun)(system_header *, uint8_t);
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27 typedef uint8_t (*system_u8_fun_r8)(system_header *, uint8_t);
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28 typedef void (*system_u8_u8_fun)(system_header *, uint8_t, uint8_t);
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29 typedef void (*system_mabs_fun)(system_header *, uint8_t, uint16_t, uint16_t);
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30 typedef void (*system_mrel_fun)(system_header *, uint8_t, int32_t, int32_t);
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31 typedef uint8_t *(*system_ptrszt_fun_rptr8)(system_header *, size_t *);
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32 typedef void (*system_ptr8_sizet_fun)(system_header *, uint8_t *, size_t);
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33
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34 #include "arena.h"
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35 #include "romdb.h"
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36
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37 struct system_header {
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38 system_header *next_context;
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39 system_str_fun start_context;
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40 system_fun resume_context;
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41 system_fun load_save;
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42 system_fun persist_save;
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43 system_u8_fun_r8 load_state;
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44 system_fun request_exit;
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45 system_fun soft_reset;
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46 system_fun free_context;
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47 system_fun_r16 get_open_bus_value;
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48 system_u32_fun set_speed_percent;
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49 system_fun inc_debug_mode;
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50 system_u8_u8_fun gamepad_down;
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51 system_u8_u8_fun gamepad_up;
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52 system_u8_u8_fun mouse_down;
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53 system_u8_u8_fun mouse_up;
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54 system_mabs_fun mouse_motion_absolute;
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55 system_mrel_fun mouse_motion_relative;
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56 system_u8_fun keyboard_down;
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57 system_u8_fun keyboard_up;
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58 system_fun config_updated;
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59 system_ptrszt_fun_rptr8 serialize;
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60 system_ptr8_sizet_fun deserialize;
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61 system_str_fun start_vgm_log;
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62 system_fun stop_vgm_log;
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63 rom_info info;
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64 arena *arena;
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65 char *next_rom;
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66 char *save_dir;
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67 uint8_t enter_debugger;
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68 uint8_t should_exit;
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69 uint8_t save_state;
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70 uint8_t delayed_load_slot;
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71 uint8_t has_keyboard;
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72 uint8_t vgm_logging;
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73 debugger_type debugger_type;
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74 system_type type;
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75 };
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76
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77 struct system_media {
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78 void *buffer;
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79 char *dir;
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80 char *name;
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81 char *extension;
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82 system_media *chain;
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83 uint32_t size;
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84 };
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85
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86 #define OPT_ADDRESS_LOG (1U << 31U)
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87
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88 system_type detect_system_type(system_media *media);
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89 system_header *alloc_config_system(system_type stype, system_media *media, uint32_t opts, uint8_t force_region);
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91 #endif //SYSTEM_H_