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annotate blastem.h @ 351:2f264d2a60c2

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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
author Mike Pavone <pavone@retrodev.com>
date Tue, 21 May 2013 22:08:59 -0700
parents a8ee7934a1f8
children 15dd6418fe67
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1 #ifndef BLASTEM_H_
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2 #define BLASTEM_H_
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4 #include <stdint.h>
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5 #include "m68k_to_x86.h"
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6 #include "z80_to_x86.h"
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7 #include "ym2612.h"
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8 #include "vdp.h"
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10 typedef struct {
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11 uint32_t th_counter;
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12 uint32_t timeout_cycle;
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13 uint8_t output;
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14 uint8_t control;
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15 uint8_t input[3];
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16 } io_port;
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18 #define RAM_FLAG_ODD 0x1800
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19 #define RAM_FLAG_EVEN 0x1000
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20 #define RAM_FLAG_BOTH 0x0000
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22 typedef struct {
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23 m68k_context *m68k;
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24 z80_context *z80;
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25 vdp_context *vdp;
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26 ym2612_context *ym;
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27 uint8_t *save_ram;
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28 uint32_t save_ram_mask;
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29 uint32_t save_flags;
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30 uint8_t bank_regs[8];
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31 } genesis_context;
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33 #define GAMEPAD_TH0 0
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34 #define GAMEPAD_TH1 1
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35 #define GAMEPAD_EXTRA 2
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37 extern io_port gamepad_1;
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38 extern io_port gamepad_2;
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39
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40 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction);
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41 uint16_t read_dma_value(uint32_t address);
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42 m68k_context * debugger(m68k_context * context, uint32_t address);
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44 #endif //BLASTEM_H_
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