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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
#ifndef __VCS_DCP_H
#define __VCS_DCP_H
#include "rom.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// TO DO: DPC should be made a separate device!
struct df_t {
UINT8 top;
UINT8 bottom;
UINT8 low;
UINT8 high;
UINT8 flag;
UINT8 music_mode; /* Only used by data fetchers 5,6, and 7 */
UINT8 osc_clk; /* Only used by data fetchers 5,6, and 7 */
};
// m_dpc.oscillator = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(a2600_state::modeDPC_timer_callback),this));
class dpc_device : public device_t
{
public:
// construction/destruction
dpc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
df_t m_df[8];
UINT8 m_movamt;
UINT8 m_latch_62;
UINT8 m_latch_64;
UINT8 m_dlc;
UINT8 m_shift_reg;
UINT8 *m_displaydata;
void set_display_data(UINT8 *data) { m_displaydata = data; }
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
// device-level overrides
virtual void device_start();
virtual void device_reset();
virtual DECLARE_READ8_MEMBER(read);
virtual DECLARE_WRITE8_MEMBER(write);
private:
void decrement_counter(UINT8 data_fetcher);
void check_flag(UINT8 data_fetcher);
static const device_timer_id TIMER_OSC = 0;
emu_timer *m_oscillator;
};
// device type definition
extern const device_type ATARI_DPC;
// ======================> a26_rom_dpc_device
class a26_rom_dpc_device : public a26_rom_f8_device
{
public:
// construction/destruction
a26_rom_dpc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// device-level overrides
virtual void device_start();
virtual machine_config_constructor device_mconfig_additions() const;
virtual void device_reset();
required_device<dpc_device> m_dpc;
// reading and writing
virtual DECLARE_READ8_MEMBER(read_rom);
virtual DECLARE_WRITE8_MEMBER(write_bank);
virtual DECLARE_DIRECT_UPDATE_MEMBER(cart_opbase);
virtual void setup_addon_ptr(UINT8 *ptr);
protected:
// int m_reset_bank;
};
// device type definition
extern const device_type A26_ROM_DPC;
#endif
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