1 // license:BSD-3-Clause
2 // copyright-holders:Curt Coder
3 /**********************************************************************
4 
5     Magic Formel cartridge emulation
6 
7 **********************************************************************/
8 
9 #ifndef MAME_BUS_C64_MAGIC_FORMEL_H
10 #define MAME_BUS_C64_MAGIC_FORMEL_H
11 
12 #pragma once
13 
14 #include "exp.h"
15 #include "machine/6821pia.h"
16 
17 
18 
19 //**************************************************************************
20 //  TYPE DEFINITIONS
21 //**************************************************************************
22 
23 // ======================> c64_magic_formel_cartridge_device
24 
25 class c64_magic_formel_cartridge_device : public device_t,
26 											public device_c64_expansion_card_interface
27 {
28 public:
29 	// construction/destruction
30 	c64_magic_formel_cartridge_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
31 
32 	DECLARE_INPUT_CHANGED_MEMBER( freeze );
33 
34 protected:
35 	// device-level overrides
36 	virtual void device_start() override;
37 	virtual void device_reset() override;
38 
39 	// optional information overrides
40 	virtual void device_add_mconfig(machine_config &config) override;
41 	virtual ioport_constructor device_input_ports() const override;
42 
43 	// device_c64_expansion_card_interface overrides
44 	virtual uint8_t c64_cd_r(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2) override;
45 	virtual void c64_cd_w(offs_t offset, uint8_t data, int sphi2, int ba, int roml, int romh, int io1, int io2) override;
46 	virtual int c64_game_r(offs_t offset, int sphi2, int ba, int rw) override;
47 
48 private:
49 	void pia_pa_w(uint8_t data);
50 	void pia_pb_w(uint8_t data);
51 	DECLARE_WRITE_LINE_MEMBER( pia_cb2_w );
52 
53 	required_device<pia6821_device> m_pia;
54 	optional_shared_ptr<uint8_t> m_ram;
55 
56 	uint8_t m_rom_bank;
57 	uint8_t m_ram_bank;
58 	int m_ram_oe;
59 	int m_pb7;
60 	int m_u9a;
61 	int m_u9b;
62 };
63 
64 
65 // device type definition
66 DECLARE_DEVICE_TYPE(C64_MAGIC_FORMEL, c64_magic_formel_cartridge_device)
67 
68 
69 #endif // MAME_BUS_C64_MAGIC_FORMEL_H
70