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// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/****************************************************************************
psion_pack.h
****************************************************************************/
#ifndef __PSION_PACK_H__
#define __PSION_PACK_H__
#include "softlist_dev.h"
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> datapack_device
class datapack_device : public device_t,
public device_image_interface
{
public:
// construction/destruction
datapack_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ~datapack_device();
// image-level overrides
virtual image_init_result call_load() override;
virtual void call_unload() override;
virtual image_init_result call_create(int format_type, util::option_resolution *create_args) override;
virtual const software_list_loader &get_software_list_loader() const override { return image_software_list_loader::instance(); }
virtual iodevice_t image_type() const override { return IO_CARTSLOT; }
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 *image_interface() const override { return "psion_pack"; }
virtual const char *file_extensions() const override { return "opk"; }
virtual const util::option_guide &create_option_guide() const override;
// specific implementation
uint8_t data_r();
void data_w(uint8_t data);
uint8_t control_r();
void control_w(uint8_t data);
protected:
// internal helper
void update();
// device-level overrides
virtual void device_start() override;
virtual void device_config_complete() override;
private:
// internal device state
uint8_t m_id; //datapack ID
uint8_t m_size; //size in 8k blocks
uint8_t m_data; //data lines
uint8_t m_control; //control lines
uint16_t m_counter; //address counter
uint8_t m_page; //active page (only for paged Datapack)
uint8_t m_segment; //active segment (only for segmented Datapack)
};
// device type definition
extern const device_type PSION_DATAPACK;
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_PSION_DATAPACK_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PSION_DATAPACK, 0)
#endif /* __PSION_PACK_H__ */
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