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// license:BSD-3-Clause
// copyright-holders:Nathan Woods, Miodrag Milanovic
/****************************************************************************
printer.h
Code for handling printer devices
****************************************************************************/
#ifndef __PRINTER_H__
#define __PRINTER_H__
#define MCFG_PRINTER_ONLINE_CB(_devcb) \
devcb = &printer_image_device::set_online_callback(*device, DEVCB_##_devcb);
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
// ======================> printer_image_device
class printer_image_device : public device_t,
public device_image_interface
{
public:
// construction/destruction
printer_image_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
template<class _Object> static devcb_base &set_online_callback(device_t &device, _Object object) { return downcast<printer_image_device &>(device).m_online_cb.set_callback(object); }
// image-level overrides
virtual image_init_result call_load() override;
virtual image_init_result call_create(int format_type, util::option_resolution *format_options) override;
virtual void call_unload() override;
// image device
virtual iodevice_t image_type() const override { return IO_PRINTER; }
virtual bool is_readable() const override { return 0; }
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 "prn"; }
// 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_start() override;
virtual void device_config_complete() override;
devcb_write_line m_online_cb;
};
// device type definition
extern const device_type PRINTER;
#endif /* __PRINTER_H__ */
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