blob: 07cbcce855674dd3fb9b3bdf582d3d162622a794 (
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
|
// license:BSD-3-Clause
// copyright-holders:David Haywood
#ifndef MAME_MACHINE_GENERALPLUS_GPL_CHX_H
#define MAME_MACHINE_GENERALPLUS_GPL_CHX_H
#pragma once
class gpl_chx_device : public device_t
{
public:
gpl_chx_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
auto cha_write_callback() { return m_cha_output_cb.bind(); }
auto chb_write_callback() { return m_chb_output_cb.bind(); }
auto updateirqs_callback() { return m_updateirqs_cb.bind(); }
bool is_cha_fifo_empty_irq() { return (m_cha_ctrl & 0x8000) ? true : false; }
bool is_chb_fifo_empty_irq() { return (m_chb_ctrl & 0x8000) ? true : false; }
u16 cha_ctrl_r();
void cha_ctrl_w(u16 data);
u16 cha_data_r();
void cha_data_w(u16 data);
u16 cha_fifo_r();
void cha_fifo_w(u16 data);
u16 chb_ctrl_r();
void chb_ctrl_w(u16 data);
u16 chb_data_r();
void chb_data_w(u16 data);
u16 chb_fifo_r();
void chb_fifo_w(u16 data);
void check_cha_fifo_empty();
void check_chb_fifo_empty();
void process_cha_fifo();
void process_chb_fifo();
protected:
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
private:
u16 m_cha_ctrl;
u16 m_chb_ctrl;
u16 m_cha_fifo[16];
u16 m_chb_fifo[16];
u16 m_cha_fifo_reg;
u16 m_chb_fifo_reg;
u8 m_cha_fifo_readpos;
u8 m_cha_fifo_writepos;
u8 m_cha_fifo_entries;
u8 m_chb_fifo_readpos;
u8 m_chb_fifo_writepos;
u8 m_chb_fifo_entries;
devcb_write16 m_cha_output_cb;
devcb_write16 m_chb_output_cb;
devcb_write_line m_updateirqs_cb;
};
DECLARE_DEVICE_TYPE(GPL_CHX, gpl_chx_device)
#endif // MAME_MACHINE_GENERALPLUS_GPL_CHX_H
|