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annotate m68k_core.h @ 1025:01a91df5b87c

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Add missing dependency for font.tiles in Makefile
author Michael Pavone <pavone@retrodev.com>
date Fri, 06 May 2016 19:19:42 -0700
parents 784bc1e45e80
children 2ec5e6eaf81d
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140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING
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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 M68K_CORE_H_
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7 #define M68K_CORE_H_
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8 #include <stdint.h>
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9 #include <stdio.h>
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10 #include "backend.h"
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11 //#include "68kinst.h"
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12 struct m68kinst;
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cbf97d335444 Full support for Sega mapper when it comes to data. Code in remapped sections may not work reliably. SSF2 now works.
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14 #define NUM_MEM_AREAS 8
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15 #define NATIVE_MAP_CHUNKS (64*1024)
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16 #define NATIVE_CHUNK_SIZE ((16 * 1024 * 1024 / NATIVE_MAP_CHUNKS))
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c66e4636f991 Implement support for self-modifying code
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17 #define MAX_NATIVE_SIZE 255
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19 #define M68K_OPT_BROKEN_READ_MODIFY 1
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20
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21 #define INT_PENDING_SR_CHANGE 8
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22
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23 typedef void (*start_fun)(uint8_t * addr, void * context);
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24
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25 typedef struct {
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26 cpu_options gen;
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27
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28 int8_t dregs[8];
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29 int8_t aregs[8];
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30 int8_t flag_regs[5];
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31 FILE *address_log;
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32 code_ptr read_16;
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33 code_ptr write_16;
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34 code_ptr read_8;
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35 code_ptr write_8;
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36 code_ptr read_32;
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37 code_ptr write_32_lowfirst;
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38 code_ptr write_32_highfirst;
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39 code_ptr do_sync;
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40 code_ptr trap;
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41 start_fun start_context;
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42 code_ptr retrans_stub;
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43 code_ptr native_addr;
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44 code_ptr native_addr_and_sync;
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45 code_ptr get_sr;
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46 code_ptr set_sr;
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47 code_ptr set_ccr;
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48 } m68k_options;
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50 typedef struct {
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51 uint8_t flags[5];
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52 uint8_t status;
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53 uint16_t int_ack;
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54 uint32_t dregs[8];
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55 uint32_t aregs[9];
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56 uint32_t target_cycle; //cycle at which the next synchronization or interrupt occurs
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57 uint32_t current_cycle;
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58 uint32_t sync_cycle;
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59 uint32_t int_cycle;
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60 uint32_t int_num;
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902c53d9c16f Half assed, prefetch based open bus value emulation. Gets BlastEm up to 119/122 in VDP FIFO Testing
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61 uint32_t last_prefetch_address;
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62 uint16_t *mem_pointers[NUM_MEM_AREAS];
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9f149f0e98b7 It is now possible to switch back and forth between the menu ROM and the game
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63 code_ptr resume_pc;
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64 native_map_slot *native_code_map;
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a18e3923481e Remove some of the hard coded assumptions about the memory map from the CPU cores
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65 m68k_options *options;
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a8ee7934a1f8 Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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66 void *system;
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98d7b6073163 Implement interrupt latency. Fixes Sesame Street: Counting Cafe and gives accurate results in my test ROM
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67 uint8_t int_pending;
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7022ba865cfd Initial work for allowing loading a ROM from menu
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68 uint8_t should_return;
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fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
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69 uint8_t ram_code_flags[];
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70 } m68k_context;
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72 void translate_m68k(m68k_options * opts, struct m68kinst * inst);
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8e395210f50f Refactor gen_x86 to use an interface more like gen_arm and to remove the need for the caller to decide whether an 8-bit or 32-bit displacement is needed in the rdisp functions. Update m68k_to_x86 to use the new version of the gen_x86 functions and do some minor refactoring there in the process
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73 void translate_m68k_stream(uint32_t address, m68k_context * context);
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74 void start_68k_context(m68k_context * context, uint32_t address);
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75 void resume_68k(m68k_context *context);
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30ccf56842d6 All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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76 void init_m68k_opts(m68k_options * opts, memmap_chunk * memmap, uint32_t num_chunks, uint32_t clock_divider);
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fc04781f4d28 Removed hardcoded assumptions in M68K core about which parts of the memory map are RAM
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77 m68k_context * init_68k_context(m68k_options * opts);
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78 void m68k_reset(m68k_context * context);
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252dfd29831d Selecting a second game from the menu now works
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79 void m68k_options_free(m68k_options *opts);
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ebcbdd1c4cc8 Fix a bunch of bugs in the CPU core, add a 68K debugger
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80 void insert_breakpoint(m68k_context * context, uint32_t address, uint8_t * bp_handler);
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81 void remove_breakpoint(m68k_context * context, uint32_t address);
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82 m68k_context * m68k_handle_code_write(uint32_t address, m68k_context * context);
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751280fb4494 Fix interrupt latency from STOP instruction status reg changes. Fix modified code patching when non-standard aliases are used. This fixes the demo MDEM's First
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83 uint32_t get_instruction_start(m68k_options *opts, native_map_slot * native_code_map, uint32_t address);
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d70000fdff0b Implemented IR and undefined bits of info word for address error exception frames
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84 uint16_t m68k_get_ir(m68k_context *context);
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86 #endif //M68K_CORE_H_
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209a37eed3e7 Add support for breaking into the debugger while game is running
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