1 // license:BSD-3-Clause
2 // copyright-holders:Aaron Giles
3 /***************************************************************************
4
5 Atari CAGE Audio Board
6
7 ****************************************************************************/
8
9 #ifndef MAME_AUDIO_CAGE_H
10 #define MAME_AUDIO_CAGE_H
11
12 #pragma once
13
14 #include "cpu/tms32031/tms32031.h"
15 #include "machine/gen_latch.h"
16 #include "machine/timer.h"
17 #include "sound/dmadac.h"
18
19
20 class atari_cage_device : public device_t
21 {
22 public:
23 enum
24 {
25 CAGE_IRQ_REASON_DATA_READY = 0x01,
26 CAGE_IRQ_REASON_BUFFER_EMPTY = 0x02
27 };
28
29 // construction/destruction
30 atari_cage_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
31
set_speedup(offs_t speedup)32 void set_speedup(offs_t speedup) { m_speedup = speedup; }
irq_handler()33 auto irq_handler() { return m_irqhandler.bind(); }
34
35 void reset_w(int state);
36
37 uint16_t main_r();
38 void main_w(uint16_t data);
39
40 uint16_t control_r();
41 void control_w(uint16_t data);
42
43 TIMER_CALLBACK_MEMBER( cage_deferred_w );
44
45 void cage_map(address_map &map);
46 protected:
47 atari_cage_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
48
49 // device-level overrides
50 virtual void device_start() override;
51 virtual void device_add_mconfig(machine_config &config) override;
52
53 TIMER_DEVICE_CALLBACK_MEMBER( dma_timer_callback );
54 TIMER_DEVICE_CALLBACK_MEMBER( cage_timer_callback );
55
56 required_device<tms32031_device> m_cpu;
57
58 void update_dma_state();
59 void update_timer(int which);
60 void update_serial();
61 uint32_t tms32031_io_r(offs_t offset);
62 void tms32031_io_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0);
63 void update_control_lines();
64 uint32_t cage_from_main_r();
65 void cage_from_main_ack_w(uint32_t data);
66 void cage_to_main_w(uint32_t data);
67 uint32_t cage_io_status_r();
68 void speedup_w(offs_t offset, uint32_t data, uint32_t mem_mask = ~0);
69
70 private:
71 required_shared_ptr<uint32_t> m_cageram;
72 required_device<generic_latch_16_device> m_soundlatch;
73 required_device<timer_device> m_dma_timer;
74 required_device_array<timer_device, 2> m_timer;
75 optional_device_array<dmadac_sound_device, 4> m_dmadac;
76
77 required_memory_bank m_bootbank;
78 required_memory_bank m_mainbank;
79
80 required_memory_region m_bootrom;
81 required_memory_region m_mainrom;
82
83 attotime m_cpu_h1_clock_period;
84
85 uint8_t m_cpu_to_cage_ready;
86 uint8_t m_cage_to_cpu_ready;
87
88 devcb_write8 m_irqhandler;
89
90 attotime m_serial_period_per_word;
91
92 uint8_t m_dma_enabled;
93 uint8_t m_dma_timer_enabled;
94
95 uint8_t m_timer_enabled[2];
96
97 uint32_t m_tms32031_io_regs[0x100];
98 uint16_t m_from_main;
99 uint16_t m_control;
100
101 uint32_t *m_speedup_ram;
102
103 offs_t m_speedup;
104 };
105
106
107 // device type definition
DECLARE_DEVICE_TYPE(ATARI_CAGE,atari_cage_device)108 DECLARE_DEVICE_TYPE(ATARI_CAGE, atari_cage_device)
109
110 class atari_cage_seattle_device : public atari_cage_device
111 {
112 public:
113 // construction/destruction
114 atari_cage_seattle_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
115
116 void cage_map_seattle(address_map &map);
117 protected:
118 // optional information overrides
119 virtual void device_add_mconfig(machine_config &config) override;
120
121 };
122
123 // device type definition
124 DECLARE_DEVICE_TYPE(ATARI_CAGE_SEATTLE, atari_cage_seattle_device)
125
126 #endif // MAME_AUDIO_CAGE_H
127