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/****************************************************************************
printer.h
Code for handling printer devices
****************************************************************************/
#ifndef __PRINTER_H__
#define __PRINTER_H__
#include "diimage.h"
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> printer_interface
struct printer_interface
{
devcb_write_line m_online;
};
// ======================> printer_image_device
class printer_image_device : public device_t,
public printer_interface,
public device_image_interface
{
public:
// construction/destruction
printer_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
virtual ~printer_image_device();
// image-level overrides
virtual bool call_load();
virtual void call_unload();
virtual iodevice_t image_type() const { return IO_PRINTER; }
virtual bool is_readable() const { return 0; }
virtual bool is_writeable() const { return 1; }
virtual bool is_creatable() const { return 1; }
virtual bool must_be_loaded() const { return 0; }
virtual bool is_reset_on_load() const { return 0; }
virtual const char *image_interface() const { return NULL; }
virtual const char *file_extensions() const { return "prn"; }
virtual const option_guide *create_option_guide() const { return NULL; }
// specific implementation
/* checks to see if a printer is ready */
int is_ready();
/* outputs data to a printer */
void output(UINT8 data);
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
devcb_resolved_write_line m_online_func;
};
// device type definition
extern const device_type PRINTER;
#define MCFG_PRINTER_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, PRINTER, 0) \
#endif /* __PRINTER_H__ */
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