view blastem.h @ 288:a8ee7934a1f8

Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
author Mike Pavone <pavone@retrodev.com>
date Sun, 05 May 2013 22:56:42 -0700
parents 209a37eed3e7
children 2f264d2a60c2
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#ifndef BLASTEM_H_
#define BLASTEM_H_

#include <stdint.h>
#include "m68k_to_x86.h"
#include "z80_to_x86.h"
#include "ym2612.h"
#include "vdp.h"

typedef struct {
	uint32_t th_counter;
	uint32_t timeout_cycle;
	uint8_t output;
	uint8_t control;
	uint8_t input[3];
} io_port;

typedef struct {
	m68k_context   *m68k;
	z80_context    *z80;
	vdp_context    *vdp;
	ym2612_context *ym;
} genesis_context;

#define GAMEPAD_TH0 0
#define GAMEPAD_TH1 1
#define GAMEPAD_EXTRA 2

extern io_port gamepad_1;
extern io_port gamepad_2;

void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction);
uint16_t read_dma_value(uint32_t address);
m68k_context * debugger(m68k_context * context, uint32_t address);

#endif //BLASTEM_H_