blob: 4b9df8bd8183888d6160a4028054b64e9d1a2133 (
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
|
/**********************************************************************
Mostek MK3801 Serial Timer Interrupt Controller (Z80-STI) emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************
_____ _____
TAO 1 |* \_/ | 40 Vcc
TBO 2 | | 39 RC
TCO 3 | | 38 SI
TDO 4 | | 37 SO
TCK 5 | | 36 TC
_M1 6 | | 35 A0
_RES 7 | | 34 A1
I0 8 | | 33 A2
I1 9 | | 32 A3
I2 10 | MK3801 | 31 _WR
I3 11 | Z80-STI | 30 _CE
I4 12 | | 29 _RD
I5 13 | | 28 D7
I6 14 | | 27 D6
I7 15 | | 26 D5
IEI 16 | | 25 D4
_INT 17 | | 24 D3
IEO 18 | | 23 D2
_IORQ 19 | | 22 D1
Vss 20 |_____________| 21 D0
**********************************************************************/
#ifndef __Z80STI__
#define __Z80STI__
#include "emu.h"
#include "devcb.h"
/***************************************************************************
MACROS / CONSTANTS
***************************************************************************/
#define Z80STI DEVICE_GET_INFO_NAME( z80sti )
#define MDRV_Z80STI_ADD(_tag, _clock, _config) \
MDRV_DEVICE_ADD((_tag), Z80STI, _clock) \
MDRV_DEVICE_CONFIG(_config)
#define Z80STI_INTERFACE(name) const z80sti_interface (name) =
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef struct _z80sti_interface z80sti_interface;
struct _z80sti_interface
{
int rx_clock; /* serial receive clock */
int tx_clock; /* serial transmit clock */
/* this gets called on each change of the _INT pin (pin 17) */
devcb_write_line out_int_func;
/* this is called on each read of the GPIO pins */
devcb_read8 in_gpio_func;
/* this is called on each write of the GPIO pins */
devcb_write8 out_gpio_func;
/* this gets called for each read of the SI pin (pin 38) */
devcb_read_line in_si_func;
/* this gets called for each change of the SO pin (pin 37) */
devcb_write_line out_so_func;
/* this gets called for each change of the TAO pin (pin 1) */
devcb_write_line out_tao_func;
/* this gets called for each change of the TBO pin (pin 2) */
devcb_write_line out_tbo_func;
/* this gets called for each change of the TCO pin (pin 3) */
devcb_write_line out_tco_func;
/* this gets called for each change of the TDO pin (pin 4) */
devcb_write_line out_tdo_func;
};
/***************************************************************************
PROTOTYPES
***************************************************************************/
/* device interface */
DEVICE_GET_INFO( z80sti );
/* register access */
READ8_DEVICE_HANDLER( z80sti_r );
WRITE8_DEVICE_HANDLER( z80sti_w );
/* receive clock */
WRITE_LINE_DEVICE_HANDLER( z80sti_rc_w );
/* transmit clock */
WRITE_LINE_DEVICE_HANDLER( z80sti_tc_w );
/* GPIP input lines */
WRITE_LINE_DEVICE_HANDLER( z80sti_i0_w );
WRITE_LINE_DEVICE_HANDLER( z80sti_i1_w );
WRITE_LINE_DEVICE_HANDLER( z80sti_i2_w );
WRITE_LINE_DEVICE_HANDLER( z80sti_i3_w );
WRITE_LINE_DEVICE_HANDLER( z80sti_i4_w );
WRITE_LINE_DEVICE_HANDLER( z80sti_i5_w );
WRITE_LINE_DEVICE_HANDLER( z80sti_i6_w );
WRITE_LINE_DEVICE_HANDLER( z80sti_i7_w );
#endif
|