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
|
/* $XFree86: xc/programs/Xserver/hw/xfree86/SuperProbe/MX.c,v 3.3 1996/02/04 08:56:48 dawes Exp $ */
/*
* (c) Copyright 1993,1994 by David Wexelblat <dwex@xfree86.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* DAVID WEXELBLAT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of David Wexelblat shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from David Wexelblat.
*
*/
/* $XConsortium: MX.c /main/5 1996/02/21 17:10:36 kaleb $ */
#include "Probe.h"
static Word Ports[] = {SEQ_REG, SEQ_IDX};
#define NUMPORTS (sizeof(Ports)/sizeof(Word))
static int MemProbe_MX __STDCARGS((int));
Chip_Descriptor MX_Descriptor = {
"MX",
Probe_MX,
Ports,
NUMPORTS,
FALSE,
FALSE,
TRUE,
MemProbe_MX,
};
Bool Probe_MX(Chipset)
int *Chipset;
{
Bool result = FALSE;
Byte old;
EnableIOPorts(NUMPORTS, Ports);
old = rdinx(SEQ_IDX, 0xA7);
wrinx(SEQ_IDX, 0xA7, 0x00);
if (!testinx(SEQ_IDX, 0xC5))
{
wrinx(SEQ_IDX, 0xA7, 0x87);
if (testinx(SEQ_IDX, 0xC5))
{
result = TRUE;
if ((rdinx(SEQ_IDX, 0x26) & 0x01) == 0)
{
*Chipset = CHIP_MX68010;
}
else
{
*Chipset = CHIP_MX68000;
}
}
}
wrinx(SEQ_IDX, 0xA7, old);
DisableIOPorts(NUMPORTS, Ports);
return(result);
}
/* ARGSUSED */
static int MemProbe_MX(Chipset)
int Chipset;
{
Byte old;
int Mem = 0;
EnableIOPorts(NUMPORTS, Ports);
/*
* Unlock
*/
old = rdinx(SEQ_IDX, 0xA7);
wrinx(SEQ_IDX, 0xA7, 0x87);
/*
* Check
*/
switch ((rdinx(SEQ_IDX, 0xC2) >> 2) & 0x03)
{
case 0x00:
Mem = 256;
break;
case 0x01:
Mem = 512;
break;
case 0x02:
Mem = 1024;
break;
}
/*
* Lock
*/
wrinx(SEQ_IDX, 0xA7, old);
DisableIOPorts(NUMPORTS, Ports);
return(Mem);
}
|
