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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
#ifndef MAME_BUS_VCS_DPC_H
#define MAME_BUS_VCS_DPC_H
#pragma once
#include "rom.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// TO DO: DPC should be made a separate device!
// 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_t clock);
void set_display_data(uint8_t *data) { m_displaydata = data; }
virtual DECLARE_READ8_MEMBER(read);
virtual DECLARE_WRITE8_MEMBER(write);
protected:
static constexpr device_timer_id TIMER_OSC = 0;
struct df_t {
uint8_t top;
uint8_t bottom;
uint8_t low;
uint8_t high;
uint8_t flag;
uint8_t music_mode; /* Only used by data fetchers 5,6, and 7 */
uint8_t osc_clk; /* Only used by data fetchers 5,6, and 7 */
};
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
df_t m_df[8];
uint8_t m_movamt;
uint8_t m_latch_62;
uint8_t m_latch_64;
uint8_t m_dlc;
uint8_t m_shift_reg;
uint8_t *m_displaydata;
private:
void decrement_counter(uint8_t data_fetcher);
void check_flag(uint8_t data_fetcher);
emu_timer *m_oscillator;
};
// device type definition
DECLARE_DEVICE_TYPE(ATARI_DPC, dpc_device)
// ======================> 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_t clock);
required_device<dpc_device> m_dpc;
// reading and writing
virtual DECLARE_READ8_MEMBER(read_rom) override;
virtual DECLARE_WRITE8_MEMBER(write_bank) override;
virtual void setup_addon_ptr(uint8_t *ptr) override;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_add_mconfig(machine_config &config) override;
virtual void device_reset() override;
};
// device type definition
DECLARE_DEVICE_TYPE(A26_ROM_DPC, a26_rom_dpc_device)
#endif // MAME_BUS_VCS_DPC_H
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