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// license:BSD-3-Clause
// copyright-holders:Carl,psxAuthor,R. Belmont
#pragma once
#ifndef _PSXCARD_
#define _PSXCARD_
#include "emu.h"
class psx_controller_port_device;
#define MCFG_PSXCARD_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PSXCARD, 0)
class psxcard_device : public device_t,
public device_image_interface
{
public:
psxcard_device(const machine_config &mconfig, std::string tag, device_t *owner, UINT32 clock);
virtual iodevice_t image_type() const override { return IO_MEMCARD; }
virtual bool is_readable() const override { return 1; }
virtual bool is_writeable() const override { return 1; }
virtual bool is_creatable() const override { return 1; }
virtual bool must_be_loaded() const override { return 0; }
virtual bool is_reset_on_load() const override { return 0; }
virtual const char *file_extensions() const override { return "mc"; }
virtual const option_guide *create_option_guide() const override { return nullptr; }
virtual bool call_load() override;
virtual bool call_create(int format_type, option_resolution *format_options) override;
void disable(bool state) { m_disabled = state; if(state) unload(); }
private:
unsigned char pkt[0x8b], pkt_ptr, pkt_sz, cmd;
unsigned short addr;
int state;
bool m_disabled;
UINT8 m_odata;
UINT8 m_idata;
int m_bit;
int m_count;
bool m_pad;
bool m_clock;
bool m_sel;
bool m_ack;
bool m_rx;
emu_timer *m_ack_timer;
psx_controller_port_device *m_owner;
void read_card(const unsigned short addr, unsigned char *buf);
void write_card(const unsigned short addr, unsigned char *buf);
unsigned char checksum_data(const unsigned char *buf, const unsigned int sz);
void do_card();
bool transfer(UINT8 to, UINT8 *from);
void ack_timer(void *ptr, int param);
public:
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_config_complete() override;
void clock_w(bool state) { if(!m_clock && !m_sel && state && !m_pad) do_card(); m_clock = state; }
void sel_w(bool state);
bool rx_r() { return m_rx; }
bool ack_r() { return m_ack; }
};
// device type definition
extern const device_type PSXCARD;
#endif
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