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
|
/*
** THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED ONLY
** PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO RIGHT
** TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX
** INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM THE
** DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC(info@3dfx.com).
** THIS PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
** EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A
** FULL TEXT OF THE NON-WARRANTY PROVISIONS.
**
** USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO
** RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS IN
** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013,
** AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR
** SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF
** THE UNITED STATES.
**
** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
**
** $Header: /cvsroot/glide/glide2x/h3/minihwc/dos_mode.c,v 1.1.1.1 1999/12/07 21:49:43 joseph Exp $
** $Log: dos_mode.c,v $
** Revision 1.1.1.1 1999/12/07 21:49:43 joseph
** Initial checkin into SourceForge.
**
**
** 3 3/17/99 6:14p Dow
** Fixes Phantom Menace, OGL, and others.
**
** 4 10/08/98 10:14a Dow
** Fixes 512x384 sometimes
**
** 3 9/02/98 1:34p Peter
** watcom warnings
**
** 2 6/25/98 7:40p Dow
** Made it compile
**
*/
#include <string.h>
#include <3dfx.h>
#include <i86.h>
#include <gdebug.h>
static FxU16 oldVidMode;
typedef struct {
int xres;
int yres;
int mode;
} ResTableEntry;
static ResTableEntry _table[] = {
{ 512, 384, 0x188 },
{ 640, 480, 0x111 },
{ 800, 600, 0x114 },
{ 1024, 768, 0x117 },
{ 0, 0, 0 }
};
static unsigned long _tableSize = sizeof( _table ) / sizeof( ResTableEntry );
FxBool
setVideoMode( unsigned long dummy, int xres, int yres, int refresh, void *hmon )
{
union REGS r, rOut;
int i;
int mode;
dummy = dummy;
r.w.ax = 0x4f03;
int386(0x10, &r, &rOut);
oldVidMode = rOut.w.bx;
mode = 0;
for( i = 0; i < _tableSize; i++ ) {
if ( ( _table[i].xres == xres ) &&
( _table[i].yres == yres ) ) {
mode = _table[i].mode;
}
}
if ( mode == 0 ) {
GDBG_INFO(80, "Setmode failed -- unimplemented resolution\n" );
return FXFALSE;
}
r.w.ax = 0x4f02;
r.w.bx = mode;
GDBG_INFO(80, "Setting mode 0x%x, 0x%x\n", r.w.ax, r.w.bx);
/* Do VGA Magic */
int386(0x10, &r, &rOut);
/* XXXTACO!! - We should check the return value */
return FXTRUE;
} /* setVideoMode */
void
resetVideo( void )
{
union REGS r;
memset(&r, 0, sizeof(r));
r.w.ax = 0x4f02;
r.w.bx = oldVidMode;
GDBG_INFO(80, "resetVideo(): Setting mode 0x%x, 0x%x\n", r.w.ax, r.w.bx);
int386( 0x10, &r, &r );
} /* resetVideo */
|
