Revert 16bit win95 version back to original value. Fixes InstallShield
[wine] / msdos / int11.c
1 /*
2  * BIOS interrupt 11h handler
3  */
4
5 #include "config.h"
6
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10
11 #include "windef.h"
12 #include "miscemu.h"
13 #include "msdos.h"
14 #include "debugtools.h"
15 #include "options.h"
16
17 /**********************************************************************
18  *          INT_Int11Handler (WPROCS.117)
19  *
20  * Handler for int 11h (get equipment list).
21  */
22 void WINAPI INT_Int11Handler( CONTEXT86 *context )
23 {
24     int diskdrives = 0;
25     int parallelports = 0;
26     int serialports = 0;
27     int x;
28
29 /* borrowed from Ralph Brown's interrupt lists 
30
31                     bits 15-14: number of parallel devices
32                     bit     13: [Conv] Internal modem
33                     bit     12: reserved
34                     bits 11- 9: number of serial devices
35                     bit      8: reserved
36                     bits  7- 6: number of diskette drives minus one
37                     bits  5- 4: Initial video mode:
38                                     00b = EGA,VGA,PGA
39                                     01b = 40 x 25 color
40                                     10b = 80 x 25 color
41                                     11b = 80 x 25 mono
42                     bit      3: reserved
43                     bit      2: [PS] =1 if pointing device
44                                 [non-PS] reserved
45                     bit      1: =1 if math co-processor
46                     bit      0: =1 if diskette available for boot
47 */
48 /*  Currently the only of these bits correctly set are:
49                 bits 15-14              } Added by William Owen Smith, 
50                 bits 11-9               } wos@dcs.warwick.ac.uk
51                 bits 7-6
52                 bit  2                  (always set)
53 */
54
55     if (GetDriveTypeA("A:\\") == DRIVE_REMOVABLE) diskdrives++;
56     if (GetDriveTypeA("B:\\") == DRIVE_REMOVABLE) diskdrives++;
57     if (diskdrives) diskdrives--;
58         
59     for (x=0; x < 9; x++)
60     {
61         char temp[16],name[16];
62
63         sprintf(name,"COM%d",x+1);
64         PROFILE_GetWineIniString("serialports",name,"*",temp,sizeof temp);
65         if(strcmp(temp,"*"))
66             serialports++;
67
68         sprintf(name,"LPT%d",x+1);
69         PROFILE_GetWineIniString("parallelports",name,"*",temp,sizeof temp);
70         if(strcmp(temp,"*"))
71             parallelports++;
72     }
73     if (serialports > 7)                /* 3 bits -- maximum value = 7 */
74         serialports=7;
75     if (parallelports > 3)              /* 2 bits -- maximum value = 3 */
76         parallelports=3;
77     
78     AX_reg(context) = (diskdrives << 6) | (serialports << 9) | 
79                       (parallelports << 14) | 0x02;
80 }