blob: a4ffa12f5b2750a76205d09acf9e08c9ec2ad9ad (
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
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
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/*************************************************************************
ldv1000.h
Pioneer LD-V1000 laserdisc emulation.
*************************************************************************/
#ifndef MAME_MACHINE_LDV1000_H
#define MAME_MACHINE_LDV1000_H
#pragma once
#include "laserdsc.h"
#include "cpu/z80/z80.h"
#include "cpu/mcs48/mcs48.h"
#include "machine/z80ctc.h"
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
// device type definition
DECLARE_DEVICE_TYPE(PIONEER_LDV1000, pioneer_ldv1000_device)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> pioneer_ldv1000_device
// base ldv1000 class
class pioneer_ldv1000_device : public laserdisc_device
{
public:
// construction/destruction
pioneer_ldv1000_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0);
auto command_strobe_callback() { return m_command_strobe_cb.bind(); }
// input and output
void data_w(uint8_t data);
void enter_w(uint8_t data);
uint8_t status_r() const { return m_status; }
uint8_t status_strobe_r() const { return (m_portc1 & 0x20) ? ASSERT_LINE : CLEAR_LINE; }
uint8_t command_strobe_r() const { return (m_portc1 & 0x10) ? ASSERT_LINE : CLEAR_LINE; }
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
virtual const tiny_rom_entry *device_rom_region() const override;
virtual void device_add_mconfig(machine_config &config) override;
// subclass overrides
virtual void player_vsync(const vbi_metadata &vbi, int fieldnum, const attotime &curtime) override;
virtual int32_t player_update(const vbi_metadata &vbi, int fieldnum, const attotime &curtime) override;
virtual void player_overlay(bitmap_yuy16 &bitmap) override { }
TIMER_CALLBACK_MEMBER(vsync_off);
TIMER_CALLBACK_MEMBER(multijump_tick);
TIMER_CALLBACK_MEMBER(process_vbi_data);
private:
// internal helpers
bool focus_on() const { return !(m_portb1 & 0x01); }
bool spdl_on() const { return !(m_portb1 & 0x02); }
bool laser_on() const { return (m_portb1 & 0x40); }
// internal read/write handlers
void z80_decoder_display_port_w(offs_t offset, uint8_t data);
uint8_t z80_decoder_display_port_r(offs_t offset);
uint8_t z80_controller_r();
void z80_controller_w(uint8_t data);
// internal read/write handlers
void ctc_interrupt(int state);
void ppi0_porta_w(uint8_t data);
uint8_t ppi0_portb_r();
uint8_t ppi0_portc_r();
void ppi0_portc_w(uint8_t data);
uint8_t ppi1_porta_r();
void ppi1_portb_w(uint8_t data);
void ppi1_portc_w(uint8_t data);
void ldv1000_map(address_map &map);
void ldv1000_portmap(address_map &map);
// internal state
required_device<z80_device> m_z80_cpu; /* CPU index of the Z80 */
required_device<z80ctc_device> m_z80_ctc; /* CTC device */
emu_timer * m_multitimer; /* multi-jump timer device */
emu_timer * m_vsync_off_timer; /* vsync-shutoff timer device */
emu_timer * m_process_vbi_timer; /* VBI processing timer device */
devcb_write_line m_command_strobe_cb;
/* communication status */
uint8_t m_command; /* command byte to the player */
uint8_t m_status; /* status byte from the player */
bool m_vsync; /* VSYNC state */
/* I/O port states */
uint8_t m_counter_start; /* starting value for counter */
uint8_t m_counter; /* current counter value */
uint8_t m_portc0; /* port C on PPI 0 */
uint8_t m_portb1; /* port B on PPI 1 */
uint8_t m_portc1; /* port C on PPI 1 */
/* display/decode circuit emulation */
uint8_t m_portselect; /* selection of which port to access */
uint8_t m_display[2][20]; /* display lines */
uint8_t m_dispindex; /* index within the display line */
uint8_t m_vbi[7*3]; /* VBI data */
bool m_vbiready; /* VBI ready flag */
uint8_t m_vbiindex; /* index within the VBI data */
};
#endif // MAME_MACHINE_LDV1000_H
|