unused/bios/mouse.asm

   1 ; THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   2 ; SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   3 ; END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   4 ; ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   5 ; IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   6 ; SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   7 ; FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   8 ; CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
   9 ; AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  10 ; COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  11 ;***************************************************************************
  12 ;***************************************************************************
  13 ;*****                                                                 *****
  14 ;*****                      M O U S E . A S M                          *****
  15 ;*****                                                                 *****
  16 ;***** Contains routines for a mouse interface.                        *****
  17 ;*****                                                                 *****
  18 ;*****                                                                 *****
  19 ;***** PROCEDURES                                                      *****
  20 ;*****                                                                 *****
  21 ;***** VARIABLES                                                       *****
  22 ;*****                                                                 *****
  23 ;*****                                                                 *****
  24 ;***** CONSTANTS                                                       *****
  25 ;*****                                                                 *****
  26 ;*****                                                                 *****
  27 ;***************************************************************************
  28 ;***************************************************************************
  29
  30 .386
  31
  32 ;************************************************************************
  33 ;**************** FLAT MODEL DATA SEGMENT STUFF *************************
  34 ;************************************************************************
  35
  36 _DATA   SEGMENT BYTE PUBLIC USE32 'DATA'
  37
  38                 MOUSE_EVENT STRUCT 2
  39                         MouseDX         dw  ?
  40                         MouseDY         dw  ?
  41                         MouseButtons    dw  ?
  42                         MouseFlags      dw  ?
  43                 MOUSE_EVENT ENDS
  44
  45                 NumberOfButtons dw ?
  46
  47                 MyEvent             MOUSE_EVENT < >
  48                 MyEventHandler      dd  0
  49
  50
  51
  52 _DATA   ENDS
  53
  54 DGROUP  GROUP _DATA
  55
  56
  57 ;************************************************************************
  58 ;**************** FLAT MODEL CODE SEGMENT STUFF *************************
  59 ;************************************************************************
  60
  61 _TEXT   SEGMENT BYTE PUBLIC USE32 'CODE'
  62
  63                 ASSUME  ds:_DATA
  64                 ASSUME  cs:_TEXT
  65
  66 PUBLIC  mouse_init_
  67
  68 mouse_init_:
  69
  70                 push    bx
  71                 xor     ax, ax      ; Reset mouse
  72                 int     33h
  73                 mov     NumberOfButtons, bx
  74                 pop     bx
  75                 or      ax, ax
  76                 jnz     present
  77                 jmp     absent
  78
  79
  80 present:
  81                 mov     ax, 0020h   ; Enable driver
  82                 int     33h
  83
  84                 mov     ax, 1
  85                 ret
  86
  87 absent:
  88                 mov     ax, 0
  89                 ret
  90
  91
  92
  93 PUBLIC  mouse_get_pos_
  94
  95 mouse_get_pos_:
  96
  97                 push    eax
  98                 push    ebx
  99                 push    ecx
 100                 push    edx
 101
 102                 push    eax
 103
 104                 mov     ax, 03h     ; Get Mouse Position and Button Status
 105                 int     33h
 106                 ; bx = buttons, cx = x, dx = y
 107
 108                 pop     eax
 109                 mov     [eax], cx
 110                 pop     eax
 111                 mov     [eax], dx
 112                 mov     edx, eax
 113
 114                 pop     ecx
 115                 pop     ebx
 116                 pop     eax
 117
 118                 ret
 119
 120 PUBLIC  mouse_get_delta_
 121
 122 mouse_get_delta_:
 123
 124                 push    eax
 125                 push    ebx
 126                 push    ecx
 127                 push    edx
 128
 129
 130                 push    eax
 131
 132                 mov     eax, 0bh    ; Read Mouse Motion Counters
 133                 int     33h
 134
 135                 pop     eax
 136                 mov     [eax], cx
 137                 pop     eax
 138                 mov     [eax], dx
 139                 mov     edx, eax
 140
 141                 pop     ecx
 142                 pop     ebx
 143                 pop     eax
 144                 ret
 145
 146
 147 PUBLIC  mouse_get_btns_
 148
 149 mouse_get_btns_:
 150
 151                 push    ebx
 152                 push    ecx
 153                 push    edx
 154
 155                 mov     ax, 03h     ; Get Mouse Position and Button Status
 156                 int     33h
 157                 ; bx = buttons, cx = x, dx = y
 158
 159                 movzx   eax, bx
 160
 161                 pop     edx
 162                 pop     ecx
 163                 pop     ebx
 164
 165                 ret
 166
 167
 168 PUBLIC  mouse_close_
 169
 170 mouse_close_:
 171
 172                 push    eax
 173                 push    ebx
 174                 push    es
 175
 176                 mov     ax, 01fh    ; Disable mouse driver
 177                 int     33h
 178
 179                 pop     es
 180                 pop     ebx
 181                 pop     eax
 182
 183                 ret
 184
 185 MyHandler:
 186
 187                 pushad
 188                 push    ds
 189
 190                 push    ax
 191                 mov     ax, DGROUP
 192                 mov     ds, ax
 193                 pop     ax
 194
 195                 mov     MyEvent.MouseDX, cx
 196                 mov     MyEvent.MouseDY, dx
 197                 mov     MyEvent.MouseButtons, bx
 198                 mov     MyEvent.MouseFlags, ax
 199
 200                 mov     eax, offset MyEvent
 201
 202                 call    MyEventHandler
 203
 204                 pop     ds
 205                 popad
 206
 207                 retf
 208
 209 PUBLIC  mouse_set_handler_
 210
 211 mouse_set_handler_:
 212
 213                 push    eax
 214                 push    ebx
 215                 push    ecx
 216                 push    edx
 217                 push    es
 218
 219                 mov     MyEventHandler, edx
 220
 221                 mov     ecx, eax    ; Event flags
 222                 mov     edx, MyHandler
 223                 mov     ax, cs
 224                 mov     es, ax
 225                 mov     ax, 0Ch     ; Set User-defined Mouse Event Handler
 226                 int     33h
 227
 228                 pop     es
 229                 pop     edx
 230                 pop     ecx
 231                 pop     edx
 232                 pop     eax
 233
 234                 ret
 235
 236 PUBLIC  mouse_clear_handler_
 237
 238 mouse_clear_handler_:
 239
 240                 push    eax
 241                 push    ebx
 242                 push    ecx
 243                 push    edx
 244                 push    es
 245
 246                 mov     MyEventHandler, 0
 247
 248                 mov     ecx, 0    ; Event flags
 249                 mov     edx, MyHandler
 250                 mov     ax, cs
 251                 mov     es, ax
 252                 mov     ax, 0Ch     ; Set User-defined Mouse Event Handler
 253                 int     33h
 254
 255                 pop     es
 256                 pop     edx
 257                 pop     ecx
 258                 pop     edx
 259                 pop     eax
 260
 261                 ret
 262
 263
 264 PUBLIC  mouse_set_limits_
 265
 266 mouse_set_limits_:
 267
 268                 ; EAX = minx
 269                 ; EDX = miny
 270                 ; EBX = maxx
 271                 ; ECX = maxy
 272
 273                 push    edx     ; Save Vertical stuff
 274                 push    ecx
 275
 276                 mov     cx, ax
 277                 mov     dx, bx
 278                 mov     ax, 7
 279                 int     33h
 280
 281                 pop     edx
 282                 pop     ecx
 283                 mov     ax, 8
 284                 int     33h
 285
 286                 ret
 287
 288
 289 ;extern void mouse_set_pos( short x, short y);
 290
 291
 292 PUBLIC  mouse_set_pos_
 293
 294 mouse_set_pos_:
 295
 296                 ; EAX = x
 297                 ; EDX = y
 298
 299                 push    ecx
 300
 301                 mov     ecx, eax
 302                 mov     eax, 04h
 303                 int     33h
 304                 pop     ecx
 305
 306
 307                 ret
 308
 309
 310
 311 _TEXT   ENDS
 312
 313
 314                 END