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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
#ifndef MAME_CPU_M6502_M5074X_H
#define MAME_CPU_M6502_M5074X_H
#pragma once
#include "m740.h"
//**************************************************************************
// CONSTANTS
//**************************************************************************
// internal ROM region
#define M5074X_INTERNAL_ROM_REGION "internal"
#define M5074X_INTERNAL_ROM(_tag) (_tag ":" M5074X_INTERNAL_ROM_REGION)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> m5074x_device
class m5074x_device : public m740_device
{
friend class m50740_device;
friend class m50741_device;
enum
{
M5074X_INT1_LINE = INPUT_LINE_IRQ0,
M5074X_SET_OVERFLOW = M740_SET_OVERFLOW
};
enum
{
TIMER_1 = 0,
TIMER_2,
TIMER_X,
NUM_TIMERS
};
public:
const address_space_config m_program_config;
template <std::size_t Bit> auto read_p() { return m_read_p[Bit].bind(); }
template <std::size_t Bit> auto write_p() { return m_write_p[Bit].bind(); }
uint8_t ports_r(offs_t offset);
void ports_w(offs_t offset, uint8_t data);
uint8_t tmrirq_r(offs_t offset);
void tmrirq_w(offs_t offset, uint8_t data);
bool are_port_bits_output(uint8_t port, uint8_t mask) { return ((m_ddrs[port] & mask) == mask) ? true : false; }
protected:
// construction/destruction
m5074x_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, address_map_constructor internal_map);
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
virtual void execute_set_input(int inputnum, int state) override;
virtual space_config_vector memory_space_config() const override;
void send_port(uint8_t offset, uint8_t data);
uint8_t read_port(uint8_t offset);
void recalc_irqs();
void recalc_timer(int timer);
devcb_read8::array<4> m_read_p;
devcb_write8::array<4> m_write_p;
uint8_t m_ports[6], m_ddrs[6];
uint8_t m_intctrl, m_tmrctrl;
uint8_t m_tmr12pre, m_tmr1, m_tmr2, m_tmrxpre, m_tmrx;
uint8_t m_tmr1latch, m_tmr2latch, m_tmrxlatch;
uint8_t m_last_all_ints;
private:
emu_timer *m_timers[NUM_TIMERS];
};
class m50740_device : public m5074x_device
{
public:
m50740_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void m50740_map(address_map &map);
protected:
m50740_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
};
class m50741_device : public m5074x_device
{
public:
m50741_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
void m50741_map(address_map &map);
protected:
m50741_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
};
DECLARE_DEVICE_TYPE(M50740, m50740_device)
DECLARE_DEVICE_TYPE(M50741, m50741_device)
#endif // MAME_CPU_M6502_M5074X_H
|