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
|
// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
#ifndef MAME_BUS_NES_GGENIE_H
#define MAME_BUS_NES_GGENIE_H
#pragma once
#include "nxrom.h"
// ======================> nes_ggenie_device
class nes_ggenie_device : public nes_nrom_device
{
public:
// construction/destruction
nes_ggenie_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
virtual u8 read_l(offs_t offset) override;
virtual u8 read_m(offs_t offset) override;
virtual u8 read_h(offs_t offset) override;
virtual void write_l(offs_t offset, u8 data) override;
virtual void write_m(offs_t offset, u8 data) override;
virtual void write_h(offs_t offset, u8 data) override;
virtual u8 chr_r(offs_t offset) override;
virtual void chr_w(offs_t offset, u8 data) override;
virtual u8 nt_r(offs_t offset) override;
virtual void nt_w(offs_t offset, u8 data) override;
void hblank_irq(int scanline, bool vblank, bool blanked) override { if (m_gg_bypass && m_ggslot->m_cart) m_ggslot->m_cart->hblank_irq(scanline, vblank, blanked); }
void scanline_irq(int scanline, bool vblank, bool blanked) override { if (m_gg_bypass && m_ggslot->m_cart) m_ggslot->m_cart->scanline_irq(scanline, vblank, blanked); }
void ppu_latch(offs_t offset) override { if (m_gg_bypass && m_ggslot->m_cart) m_ggslot->m_cart->ppu_latch(offset); }
virtual void pcb_reset() override;
virtual void pcb_start(running_machine &machine, u8 *ciram_ptr, bool cart_mounted) override;
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_add_mconfig(machine_config &config) override;
private:
// passthrough cart slot
required_device<nes_cart_slot_device> m_ggslot;
bool m_gg_bypass;
// GG codes
u16 m_gg_addr[3];
u8 m_gg_repl[3];
u8 m_gg_comp[3];
bool m_gg_enable[3];
bool m_gg_is_comp[3];
};
// device type definition
DECLARE_DEVICE_TYPE(NES_GGENIE, nes_ggenie_device)
#endif // MAME_BUS_NES_GGENIE_H
|