summaryrefslogtreecommitdiffstatshomepage
path: root/src/emu/bus/a2bus/a2estd80col.h
blob: 29ce8d1dc08c9691fbf4b007ad370c6f10cfe9bf (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
/*********************************************************************

    a2estd80col.c

    Apple IIe Standard 80 Column Card

*********************************************************************/

#ifndef __A2EAUX_STD80COL__
#define __A2EAUX_STD80COL__

#include "emu.h"
#include "a2eauxslot.h"

//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

class a2eaux_std80col_device:
	public device_t,
	public device_a2eauxslot_card_interface
{
public:
	// construction/destruction
	a2eaux_std80col_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
	a2eaux_std80col_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);

protected:
	virtual void device_start();
	virtual void device_reset();

	virtual UINT8 read_auxram(UINT16 offset);
	virtual void write_auxram(UINT16 offset, UINT8 data);
	virtual UINT8 *get_vram_ptr();
	virtual UINT8 *get_auxbank_ptr();
	virtual bool allow_dhr() { return false; }  // we don't allow DHR

private:
	UINT8 m_ram[2*1024];
};

// device type definition
extern const device_type A2EAUX_STD80COL;

#endif  /* __A2EAUX_STD80COL__ */