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annotate blastem.h @ 821:21a69dfb6ee7

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Implement half carry for a couple of the trivial cases
author Michael Pavone <pavone@retrodev.com>
date Sat, 01 Aug 2015 17:05:51 -0700
parents 092524bb2e8f
children 69a6ec208111
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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 BLASTEM_H_
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7 #define BLASTEM_H_
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9 #include <stdint.h>
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10 #include "m68k_core.h"
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11 #include "z80_to_x86.h"
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12 #include "ym2612.h"
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13 #include "vdp.h"
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14 #include "psg.h"
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15 #include "io.h"
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16 #include "config.h"
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17 #include "romdb.h"
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19 typedef struct {
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20 m68k_context *m68k;
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21 z80_context *z80;
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22 vdp_context *vdp;
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23 ym2612_context *ym;
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24 psg_context *psg;
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25 uint16_t *work_ram;
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26 uint8_t *zram;
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27 uint8_t *save_storage;
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28 eeprom_map *eeprom_map;
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29 uint32_t num_eeprom;
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30 uint32_t save_size;
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31 uint32_t save_ram_mask;
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32 uint32_t master_clock; //Current master clock value
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33 uint32_t normal_clock; //Normal master clock (used to restore master clock after turbo mode)
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34 uint32_t frame_end;
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35 uint32_t max_cycles;
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36 uint8_t bank_regs[8];
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37 uint16_t mapper_start_index;
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38 uint8_t save_type;
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39 io_port ports[3];
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40 uint8_t bus_busy;
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41 eeprom_state eeprom;
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42 } genesis_context;
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43
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44 extern genesis_context * genesis;
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45 extern int headless;
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46 extern int break_on_sync;
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47 extern int save_state;
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48 extern tern_node * config;
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50 #define RAM_WORDS 32 * 1024
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51 #define Z80_RAM_BYTES 8 * 1024
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53 extern uint16_t *cart;
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54 extern uint16_t ram[RAM_WORDS];
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55 extern uint8_t z80_ram[Z80_RAM_BYTES];
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57 uint16_t read_dma_value(uint32_t address);
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58 m68k_context * sync_components(m68k_context *context, uint32_t address);
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59 m68k_context * debugger(m68k_context * context, uint32_t address);
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60 void set_speed_percent(genesis_context * context, uint32_t percent);
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62 #endif //BLASTEM_H_
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