summaryrefslogtreecommitdiffstatshomepage
path: root/src/emu/imagedev/printer.h
blob: 4348cf487b4e578b83a64afdaedbfba2a8f4af37 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
/****************************************************************************

    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__ */