blob: 086be3fa66a19a29f763613cc148c224673e498c (
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
|
/*********************************************************************
6850acia.h
6850 ACIA code
*********************************************************************/
#ifndef __ACIA6850_H__
#define __ACIA6850_H__
/***************************************************************************
MACROS
***************************************************************************/
#define ACIA6850 DEVICE_GET_INFO_NAME(acia6850)
#define ACIA6850_STATUS_RDRF 0x01
#define ACIA6850_STATUS_TDRE 0x02
#define ACIA6850_STATUS_DCD 0x04
#define ACIA6850_STATUS_CTS 0x08
#define ACIA6850_STATUS_FE 0x10
#define ACIA6850_STATUS_OVRN 0x20
#define ACIA6850_STATUS_PE 0x40
#define ACIA6850_STATUS_IRQ 0x80
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
typedef struct _acia6850_interface acia6850_interface;
struct _acia6850_interface
{
int tx_clock;
int rx_clock;
UINT8 *rx_pin;
UINT8 *tx_pin;
UINT8 *cts_pin;
UINT8 *rts_pin;
UINT8 *dcd_pin;
void (*int_callback)(const device_config *device, int state);
};
/***************************************************************************
FUNCTION PROTOTYPES
***************************************************************************/
DEVICE_GET_INFO( acia6850 );
void acia_tx_clock_in(const device_config *device) ATTR_NONNULL;
void acia_rx_clock_in(const device_config *device) ATTR_NONNULL;
void acia6850_set_rx_clock(const device_config *device, int clock) ATTR_NONNULL;
void acia6850_set_tx_clock(const device_config *device, int clock) ATTR_NONNULL;
WRITE8_DEVICE_HANDLER( acia6850_ctrl_w );
READ8_DEVICE_HANDLER( acia6850_stat_r );
WRITE8_DEVICE_HANDLER( acia6850_data_w );
READ8_DEVICE_HANDLER( acia6850_data_r );
READ16_DEVICE_HANDLER( acia6850_stat_lsb_r );
READ16_DEVICE_HANDLER( acia6850_stat_msb_r );
READ16_DEVICE_HANDLER( acia6850_data_lsb_r );
READ16_DEVICE_HANDLER( acia6850_data_msb_r );
WRITE16_DEVICE_HANDLER( acia6850_ctrl_msb_w );
WRITE16_DEVICE_HANDLER( acia6850_ctrl_lsb_w );
WRITE16_DEVICE_HANDLER( acia6850_data_msb_w );
WRITE16_DEVICE_HANDLER( acia6850_data_lsb_w );
#endif /* __ACIA6850_H__ */
|