blob: 588ead99b4024e7e92eaa0d206e715b5dd744db6 (
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
|
// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
* magicsound.h
*
* Magic Sound Board for the Aleste 520EX
*
* DMA-based 4-channel sound board
*
* 1x K1810WT37 DMA controller (i8237/AM9517A)
* 2x K1810WT54 programmable timers (i8254)
* 1x K1118PA1 DAC (MC10318)
*
* I/O Ports:
* FxDx: selects the board
* F8Dx: DMA controller (R/w)
* F9Dx: PIT timers (A2 active for channels 0-2, A3 active for channels 3-5) (W/O)
* FADx: Volume control (A1-A0 = channel) (W/O, 6-bit)
* FBDx: Mapper (A1-A0 = mapper page number, A3-A2 = channel, D5-D0 = inverted page number) (W/O)
*
* Further info available here: http://cpcwiki.eu/index.php/Magic_Sound_Board
*
*/
#ifndef MAGICSOUND_H_
#define MAGICSOUND_H_
#include "emu.h"
#include "cpcexp.h"
#include "sound/dmadac.h"
#include "sound/dac.h"
#include "machine/am9517a.h"
#include "machine/pit8253.h"
#include "machine/ram.h"
class al_magicsound_device : public device_t,
public device_cpc_expansion_card_interface
{
public:
// construction/destruction
al_magicsound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const;
DECLARE_READ8_MEMBER(dmac_r);
DECLARE_WRITE8_MEMBER(dmac_w);
DECLARE_WRITE8_MEMBER(timer_w);
DECLARE_WRITE8_MEMBER(volume_w);
DECLARE_WRITE8_MEMBER(mapper_w);
DECLARE_WRITE_LINE_MEMBER(da0_w);
DECLARE_READ8_MEMBER(dma_read_byte);
DECLARE_WRITE8_MEMBER(dma_write_byte);
DECLARE_WRITE_LINE_MEMBER(dack0_w);
DECLARE_WRITE_LINE_MEMBER(dack1_w);
DECLARE_WRITE_LINE_MEMBER(dack2_w);
DECLARE_WRITE_LINE_MEMBER(dack3_w);
DECLARE_WRITE_LINE_MEMBER(sam0_w);
DECLARE_WRITE_LINE_MEMBER(sam1_w);
DECLARE_WRITE_LINE_MEMBER(sam2_w);
DECLARE_WRITE_LINE_MEMBER(sam3_w);
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
private:
cpc_expansion_slot_device *m_slot;
required_device<dac_device> m_dac1;
required_device<am9517a_device> m_dmac;
required_device<pit8254_device> m_timer1;
required_device<pit8254_device> m_timer2;
void set_timer_gate(bool state);
UINT8 m_volume[4];
UINT32 m_page[4][4];
UINT8 m_output[4];
bool m_dack[4];
INT8 m_current_channel;
ram_device* m_ramptr;
UINT8 m_current_output;
};
// device type definition
extern const device_type AL_MAGICSOUND;
#endif /* MAGICSOUND_H_ */
|