blob: 5ea89fee28e88560cbeadeeaa09529ce8cdc4ca1 (
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
125
126
127
128
129
|
/*
* Copyright © 2017 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*/
#ifndef _AO_1802_H_
#define _AO_1802_H_
/* Decoded address driven by TPA/TPB signals */
extern uint16_t ADDRESS;
/* Decoded data, driven by TPB signal */
extern uint8_t DATA;
uint8_t
MRD(void);
void
MRD_set(uint8_t value);
uint8_t
MWR(void);
void
MWR_set(uint8_t value);
uint8_t
TPA(void);
void
TPA_set(uint8_t tpa);
uint8_t
TPB(void);
void
TPB_set(uint8_t tpb);
uint8_t
MA(void);
void
MA_set(uint8_t ma);
/* Tri-state data bus */
uint8_t
BUS(void);
void
BUS_set(uint8_t bus);
void
BUS_stm(void);
void
BUS_1802(void);
/* Pins controlled by 1802 */
uint8_t
SC(void);
uint8_t
Q(void);
uint8_t
N(void);
/* Pins controlled by STM */
uint8_t
EF(void);
void
EF_set(uint8_t ef);
uint8_t
DMA_IN(void);
void
DMA_IN_set(uint8_t dma_in);
uint8_t
DMA_OUT(void);
void
DMA_OUT_set(uint8_t dma_out);
uint8_t
INT(void);
void
INT_set(uint8_t dma_out);
uint8_t
CLEAR(void);
void
CLEAR_set(uint8_t dma_out);
uint8_t
WAIT(void);
void
WAIT_set(uint8_t dma_out);
#define SC_FETCH 0
#define SC_EXECUTE 1
#define SC_DMA 2
#define SC_INTERRUPT 3
void
MUX_1802(void);
void
MUX_stm(void);
void
ao_1802_init(void);
#endif /* _AO_1802_H_ */
|
