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
|
/*
* Copyright (C) 2002-2004 The DOSBox Team
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#define IO_MAX (64*1024+3)
#define IO_MB 0x1
#define IO_MW 0x2
#define IO_MD 0x4
#define IO_MA (IO_MB | IO_MW | IO_MD )
typedef Bitu IO_ReadHandler(Bitu port,Bitu iolen);
typedef void IO_WriteHandler(Bitu port,Bitu val,Bitu iolen);
extern IO_WriteHandler * io_writehandlers[3][IO_MAX];
extern IO_ReadHandler * io_readhandlers[3][IO_MAX];
void IO_RegisterReadHandler(Bitu port,IO_ReadHandler * handler,Bitu mask,Bitu range=1);
void IO_RegisterWriteHandler(Bitu port,IO_WriteHandler * handler,Bitu mask,Bitu range=1);
void IO_FreeReadHandler(Bitu port,Bitu mask,Bitu range=0);
void IO_FreeWriteHandler(Bitu port,Bitu mask,Bitu range=0);
INLINE void IO_WriteB(Bitu port,Bitu val) {
io_writehandlers[0][port](port,val,1);
};
INLINE void IO_WriteW(Bitu port,Bitu val) {
io_writehandlers[1][port](port,val,2);
};
INLINE void IO_WriteD(Bitu port,Bitu val) {
io_writehandlers[2][port](port,val,4);
};
INLINE Bitu IO_ReadB(Bitu port) {
return io_readhandlers[0][port](port,1);
}
INLINE Bitu IO_ReadW(Bitu port) {
return io_readhandlers[1][port](port,2);
}
INLINE Bitu IO_ReadD(Bitu port) {
return io_readhandlers[2][port](port,4);
}
INLINE void IO_Write(Bitu port,Bit8u val) {
IO_WriteB(port,val);
}
INLINE Bit8u IO_Read(Bitu port){
return IO_ReadB(port);
}
|
