src/lib/16_tail.c

   1 /* Project 16 Source Code~\r
   2  * Copyright (C) 2012-2017 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover\r
   3  *\r
   4  * This file is part of Project 16.\r
   5  *\r
   6  * Project 16 is free software; you can redistribute it and/or modify\r
   7  * it under the terms of the GNU General Public License as published by\r
   8  * the Free Software Foundation; either version 3 of the License, or\r
   9  * (at your option) any later version.\r
  10  *\r
  11  * Project 16 is distributed in the hope that it will be useful,\r
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the\r
  14  * GNU General Public License for more details.\r
  15  *\r
  16  * You should have received a copy of the GNU General Public License\r
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>, or\r
  18  * write to the Free Software Foundation, Inc., 51 Franklin Street,\r
  19  * Fifth Floor, Boston, MA 02110-1301 USA.\r
  20  *\r
  21  */\r
  22 /*\r
  23  * 16 tail library\r
  24  */\r
  25 \r
  26 #include "src/lib/16_tail.h"\r
  27 #include "src/lib/16text.h"\r
  28 \r
  29 /*\r
  30 ==========================\r
  31 =\r
  32 = Startup16\r
  33 =\r
  34 = Load a few things right away\r
  35 =\r
  36 ==========================\r
  37 */\r
  38 \r
  39 void Startup16 (global_game_variables_t *gvar)\r
  40 {\r
  41         gvar->video.VL_Started=0;\r
  42         TL_VidInit(gvar);\r
  43         gvar->mm.mmstarted=0;\r
  44         gvar->pm.PMStarted=0;\r
  45         StartupCAMMPM(gvar);\r
  46 #ifdef __WATCOMC__\r
  47 #ifdef __DEBUG_InputMgr__\r
  48         if(!dbg_nointest)\r
  49 #endif\r
  50         IN_Startup(gvar);\r
  51 #endif\r
  52 }\r
  53 \r
  54 //===========================================================================\r
  55 \r
  56 /*\r
  57 ==========================\r
  58 =\r
  59 = Shutdown16\r
  60 =\r
  61 = Shuts down all ID_?? managers\r
  62 =\r
  63 ==========================\r
  64 */\r
  65 \r
  66 void Shutdown16 (global_game_variables_t *gvar)\r
  67 {\r
  68 #ifdef __WATCOMC__\r
  69 #ifdef __DEBUG_InputMgr__\r
  70         if(!dbg_nointest)\r
  71 #endif\r
  72         IN_Shutdown(gvar);\r
  73 #endif\r
  74         ShutdownCAMMPM(gvar);\r
  75 #ifdef __WATCOMC__\r
  76         if(gvar->video.VL_Started)\r
  77                 VL_Shutdown (gvar);//VGAmodeX(0, 1, gvar);\r
  78 #endif\r
  79 }\r
  80 \r
  81 //===========================================================================\r
  82 \r
  83 /*\r
  84 ==========================\r
  85 =\r
  86 = StartupCAMMPM\r
  87 =\r
  88 ==========================\r
  89 */\r
  90 \r
  91 void StartupCAMMPM (global_game_variables_t *gvar)\r
  92 {\r
  93 /*\r
  94         MM_Startup ();                  // so the signon screen can be freed\r
  95 \r
  96         SignonScreen ();\r
  97 \r
  98         VW_Startup ();\r
  99         IN_Startup ();\r
 100         PM_Startup ();\r
 101         PM_UnlockMainMem ();\r
 102         SD_Startup ();\r
 103         CA_Startup ();\r
 104         US_Startup ();\r
 105 */\r
 106         MM_Startup(gvar);\r
 107 #ifdef __16_PM__\r
 108         PM_Startup(gvar);\r
 109 //????  PM_CheckMainMem(gvar);\r
 110         PM_UnlockMainMem(gvar);\r
 111 #endif\r
 112         CA_Startup(gvar);\r
 113 }\r
 114 \r
 115 //===========================================================================\r
 116 \r
 117 /*\r
 118 ==========================\r
 119 =\r
 120 = ShutdownCAMMPM\r
 121 =\r
 122 ==========================\r
 123 */\r
 124 \r
 125 void ShutdownCAMMPM (global_game_variables_t *gvar)\r
 126 {\r
 127 /*\r
 128         US_Shutdown ();\r
 129         SD_Shutdown ();\r
 130         PM_Shutdown ();\r
 131         IN_Shutdown ();\r
 132         VW_Shutdown ();\r
 133         CA_Shutdown ();\r
 134         MM_Shutdown ()\r
 135 */\r
 136 #ifdef __16_PM__\r
 137         PM_Shutdown(gvar);\r
 138 #endif\r
 139         CA_Shutdown(gvar);\r
 140         MM_Shutdown(gvar);\r
 141 }\r
 142 \r
 143 //===========================================================================\r
 144 \r
 145 /*\r
 146 ====================\r
 147 =\r
 148 = ReadConfig\r
 149 =\r
 150 ====================\r
 151 */\r
 152 #if 0\r
 153 void ReadConfig(void)\r
 154 {\r
 155         int                                      file;\r
 156 //      SDMode            sd;\r
 157 //      SMMode            sm;\r
 158 //      SDSMode          sds;\r
 159 \r
 160 \r
 161         if ( (file = open(CONFIGNAME,O_BINARY | O_RDONLY)) != -1)\r
 162         {\r
 163         //\r
 164         // valid config file\r
 165         //\r
 166 //              read(file,Scores,sizeof(HighScore) * MaxScores);\r
 167 \r
 168 //              read(file,&sd,sizeof(sd));\r
 169 //              read(file,&sm,sizeof(sm));\r
 170 //              read(file,&sds,sizeof(sds));\r
 171 \r
 172                 read(file,&mouseenabled,sizeof(mouseenabled));\r
 173                 read(file,&joystickenabled,sizeof(joystickenabled));\r
 174                 read(file,&joystickprogressive,sizeof(joystickprogressive));\r
 175                 read(file,&joystickport,sizeof(joystickport));\r
 176 \r
 177                 read(file,&dirscan,sizeof(dirscan));\r
 178                 read(file,&buttonscan,sizeof(buttonscan));\r
 179                 read(file,&buttonmouse,sizeof(buttonmouse));\r
 180                 read(file,&buttonjoy,sizeof(buttonjoy));\r
 181 \r
 182                 read(file,&viewsize,sizeof(viewsize));\r
 183                 read(file,&mouseadjustment,sizeof(mouseadjustment));\r
 184 \r
 185                 close(file);\r
 186 \r
 187                 /*if (sd == sdm_AdLib && !AdLibPresent && !SoundBlasterPresent)\r
 188                 {\r
 189                         sd = sdm_PC;\r
 190                         sd = smm_Off;\r
 191                 }\r
 192 \r
 193                 if ((sds == sds_SoundBlaster && !SoundBlasterPresent) ||\r
 194                         (sds == sds_SoundSource && !SoundSourcePresent))\r
 195                         sds = sds_Off;*/\r
 196 \r
 197                 if (!MousePresent)\r
 198                         mouseenabled = false;\r
 199                 if (!JoysPresent[joystickport])\r
 200                         joystickenabled = false;\r
 201 \r
 202                 MainMenu[6].active=1;\r
 203                 MainItems.curpos=0;\r
 204         }\r
 205         else\r
 206         {\r
 207         //\r
 208         // no config file, so select by hardware\r
 209         //\r
 210 /*              if (SoundBlasterPresent || AdLibPresent)\r
 211                 {\r
 212                         sd = sdm_AdLib;\r
 213                         sm = smm_AdLib;\r
 214                 }\r
 215                 else\r
 216                 {\r
 217                         sd = sdm_PC;\r
 218                         sm = smm_Off;\r
 219                 }\r
 220 \r
 221                 if (SoundBlasterPresent)\r
 222                         sds = sds_SoundBlaster;\r
 223                 else if (SoundSourcePresent)\r
 224                         sds = sds_SoundSource;\r
 225                 else\r
 226                         sds = sds_Off;*/\r
 227 \r
 228                 if (MousePresent)\r
 229                         mouseenabled = true;\r
 230 \r
 231                 joystickenabled = false;\r
 232                 joystickport = 0;\r
 233                 joystickprogressive = false;\r
 234 \r
 235                 viewsize = 15;\r
 236                 mouseadjustment=5;\r
 237         }\r
 238 \r
 239         SD_SetMusicMode (sm);\r
 240         SD_SetSoundMode (sd);\r
 241         SD_SetDigiDevice (sds);\r
 242 }\r
 243 \r
 244 \r
 245 /*\r
 246 ====================\r
 247 =\r
 248 = WriteConfig\r
 249 =\r
 250 ====================\r
 251 */\r
 252 \r
 253 void WriteConfig(void)\r
 254 {\r
 255         int                                      file;\r
 256 \r
 257         file = open(CONFIGNAME,O_CREAT | O_BINARY | O_WRONLY,\r
 258                                 S_IREAD | S_IWRITE | S_IFREG);\r
 259 \r
 260         if (file != -1)\r
 261         {\r
 262 //              write(file,Scores,sizeof(HighScore) * MaxScores);\r
 263 \r
 264 //              write(file,&SoundMode,sizeof(SoundMode));\r
 265 //              write(file,&MusicMode,sizeof(MusicMode));\r
 266 //              write(file,&DigiMode,sizeof(DigiMode));\r
 267 \r
 268                 write(file,&mouseenabled,sizeof(mouseenabled));\r
 269                 write(file,&joystickenabled,sizeof(joystickenabled));\r
 270                 write(file,&joystickprogressive,sizeof(joystickprogressive));\r
 271                 write(file,&joystickport,sizeof(joystickport));\r
 272 \r
 273                 write(file,&dirscan,sizeof(dirscan));\r
 274                 write(file,&buttonscan,sizeof(buttonscan));\r
 275                 write(file,&buttonmouse,sizeof(buttonmouse));\r
 276                 write(file,&buttonjoy,sizeof(buttonjoy));\r
 277 \r
 278 //              write(file,&viewsize,sizeof(viewsize));\r
 279                 write(file,&mouseadjustment,sizeof(mouseadjustment));\r
 280 \r
 281                 close(file);\r
 282         }\r
 283 }\r
 284 #endif\r
 285 //===========================================================================\r
 286 \r
 287 /*\r
 288 ===================\r
 289 =\r
 290 = FizzleFade\r
 291 =\r
 292 ===================\r
 293 */\r
 294 \r
 295 boolean FizzleFade (unsigned source, unsigned dest, unsigned width, unsigned height, unsigned frames, boolean abortable, global_game_variables_t *gvar)\r
 296 {\r
 297         word            p,pixperframe;\r
 298         unsigned        drawofs,pagedelta;\r
 299         byte            mask,maskb[8] = {1,2,4,8};\r
 300         unsigned        x,y,frame;\r
 301         long            rndval;\r
 302         word            screenseg;\r
 303 #ifdef __WATCOMC__\r
 304         unsigned        esorig;//,q;\r
 305 #endif\r
 306 \r
 307         pagedelta = dest-source;\r
 308         rndval = 1;\r
 309 #ifdef __WATCOMC__\r
 310         esorig = 0;// q = 16;\r
 311 #endif\r
 312         x = y = 0;\r
 313         pixperframe = (dword)(gvar->video.page[0].width*gvar->video.page[0].height)/frames;\r
 314         screenseg = SCREENSEG;\r
 315 \r
 316         IN_StartAck (gvar);\r
 317 \r
 318 //      modexClearRegion(&(gvar->video.page[0]), 0, 0, gvar->video.page[0].width, gvar->video.page[0].height, 0);\r
 319 //      modexClearRegion(&(gvar->video.page[1]), 0, 0, gvar->video.page[0].width, gvar->video.page[0].height, 15);\r
 320 \r
 321 #ifdef __WATCOMC__\r
 322         __asm {\r
 323                 mov     [esorig],es\r
 324         }\r
 325 #endif\r
 326 //      TimeCount=\r
 327         frame=0;\r
 328         do      // while (1)\r
 329         {\r
 330                 if (abortable && IN_CheckAck (gvar) )\r
 331                         return true;\r
 332 \r
 333                 __asm {\r
 334                         mov     es,[screenseg]\r
 335                 }\r
 336 \r
 337                 for (p=0;p<pixperframe;p++)\r
 338                 {\r
 339                         __asm {\r
 340                                 //\r
 341                                 // seperate random value into x/y pair\r
 342                                 //\r
 343                                 mov     ax,[WORD PTR rndval]\r
 344                                 mov     dx,[WORD PTR rndval+2]\r
 345                                 mov     bx,ax\r
 346                                 dec     bl\r
 347                                 mov     [BYTE PTR y],bl                 // low 8 bits - 1 = y xoordinate\r
 348                                 mov     bx,ax\r
 349                                 mov     cx,dx\r
 350                                 mov     [BYTE PTR x],ah                 // next 9 bits = x xoordinate\r
 351                                 mov     [BYTE PTR x+1],dl\r
 352                                 //\r
 353                                 // advance to next random element\r
 354                                 //\r
 355                                 shr     dx,1\r
 356                                 rcr     ax,1\r
 357                                 jnc     noxor\r
 358                                 xor     dx,0x0001\r
 359                                 xor     ax,0x2000\r
 360 #ifdef __BORLANDC__\r
 361                         }\r
 362 #endif\r
 363 noxor:\r
 364 #ifdef __BORLANDC__\r
 365                         __asm {\r
 366 #endif\r
 367                                 mov     [WORD PTR rndval],ax\r
 368                                 mov     [WORD PTR rndval+2],dx\r
 369                         }\r
 370 \r
 371                         if (x>width || y>height)\r
 372 //                      if ((x>width || y>height) && (x<width*2 && y<height*2))\r
 373                                 continue;\r
 374 //                      drawofs = source+(gvar->video.ofs.ylookup[y]) + (x>>2);\r
 375                         drawofs = source+(y*gvar->video.page[0].stridew) + (x>>2);\r
 376 \r
 377                         //\r
 378                         // copy one pixel\r
 379                         //\r
 380                         mask = x&3;\r
 381                         VGAREADMAP(mask);\r
 382                         mask = maskb[mask];\r
 383                         VGAMAPMASK(mask);\r
 384 \r
 385                         __asm {\r
 386                                 mov     di,[drawofs]\r
 387                                 mov     al,[es:di]\r
 388                                 add     di,[pagedelta]\r
 389                                 mov     [es:di],al\r
 390                         }\r
 391 \r
 392                         if (rndval == 1)                // entire sequence has been completed\r
 393                                 return false;\r
 394                 }\r
 395                 frame++;\r
 396 //--            while (TimeCount<frame){}//;            // don't go too fast\r
 397                 delay(1);\r
 398         } while (1);\r
 399 #ifdef __WATCOMC__\r
 400         __asm {\r
 401                 mov     es,[esorig]\r
 402         }\r
 403         return false;\r
 404 #endif\r
 405 }\r
 406 \r
 407 //===========================================================================\r
 408 \r
 409 /*\r
 410 ==================\r
 411 =\r
 412 = DebugMemory\r
 413 =\r
 414 ==================\r
 415 */\r
 416 \r
 417 void DebugMemory_(global_game_variables_t *gvar, boolean q)\r
 418 {\r
 419         /*VW_FixRefreshBuffer ();\r
 420         US_CenterWindow (16,7);\r
 421 \r
 422         US_CPrint ("Memory Usage");\r
 423         US_CPrint ("------------");\r
 424         US_Print ("Total         :");\r
 425         US_PrintUnsigned (mminfo.mainmem/1024);\r
 426         US_Print ("k\nFree        :");\r
 427         US_PrintUnsigned (MM_UnusedMemory()/1024);\r
 428         US_Print ("k\nWith purge:");\r
 429         US_PrintUnsigned (MM_TotalFree()/1024);\r
 430         US_Print ("k\n");\r
 431         VW_UpdateScreen();*/\r
 432         if(q){\r
 433         printf("========================================\n");\r
 434         printf("                DebugMemory_\n");\r
 435         printf("========================================\n");}\r
 436         if(q) { printf("Memory Usage\n");\r
 437         printf("------------\n"); }else printf("        %c%c", 0xD3, 0xC4);\r
 438         printf("Total:  "); if(q) printf("      "); printf("%uk", gvar->mmi.mainmem/1024);\r
 439         if(q) printf("\n"); else printf("       ");\r
 440         printf("Free:   "); if(q) printf("      "); printf("%uk", MM_UnusedMemory(gvar)/1024);\r
 441         if(q) printf("\n"); else printf("       ");\r
 442         printf("With purge:"); if(q) printf("   "); printf("%uk\n", MM_TotalFree(gvar)/1024);\r
 443         if(q) printf("------------\n");\r
 444 #ifdef __WATCOMC__\r
 445         //IN_Ack ();\r
 446 #endif\r
 447 //      if(q) MM_ShowMemory (gvar);\r
 448 }\r
 449 \r
 450 /*\r
 451 ===================\r
 452 =\r
 453 = TestSprites\r
 454 =\r
 455 ===================\r
 456 */\r
 457 \r
 458 #if 0\r
 459 #define DISPWIDTH       110\r
 460 #define TEXTWIDTH   40\r
 461 void TestSprites(void)\r
 462 {\r
 463         int hx,hy,sprite,oldsprite,bottomy,topx,shift;\r
 464         spritetabletype far *spr;\r
 465         spritetype _seg *block;\r
 466         unsigned        mem,scan;\r
 467 \r
 468 \r
 469         VW_FixRefreshBuffer ();\r
 470         US_CenterWindow (30,17);\r
 471 \r
 472         US_CPrint ("Sprite Test");\r
 473         US_CPrint ("-----------");\r
 474 \r
 475         hy=PrintY;\r
 476         hx=(PrintX+56)&(~7);\r
 477         topx = hx+TEXTWIDTH;\r
 478 \r
 479         US_Print ("Chunk:\nWidth:\nHeight:\nOrgx:\nOrgy:\nXl:\nYl:\nXh:\nYh:\n"\r
 480                           "Shifts:\nMem:\n");\r
 481 \r
 482         bottomy = PrintY;\r
 483 \r
 484         sprite = STARTSPRITES;\r
 485         shift = 0;\r
 486 \r
 487         do\r
 488         {\r
 489                 if (sprite>=STARTTILE8)\r
 490                         sprite = STARTTILE8-1;\r
 491                 else if (sprite<STARTSPRITES)\r
 492                         sprite = STARTSPRITES;\r
 493 \r
 494                 spr = &spritetable[sprite-STARTSPRITES];\r
 495                 block = (spritetype _seg *)grsegs[sprite];\r
 496 \r
 497                 VWB_Bar (hx,hy,TEXTWIDTH,bottomy-hy,WHITE);\r
 498 \r
 499                 PrintX=hx;\r
 500                 PrintY=hy;\r
 501                 US_PrintUnsigned (sprite);US_Print ("\n");PrintX=hx;\r
 502                 US_PrintUnsigned (spr->width);US_Print ("\n");PrintX=hx;\r
 503                 US_PrintUnsigned (spr->height);US_Print ("\n");PrintX=hx;\r
 504                 US_PrintSigned (spr->orgx);US_Print ("\n");PrintX=hx;\r
 505                 US_PrintSigned (spr->orgy);US_Print ("\n");PrintX=hx;\r
 506                 US_PrintSigned (spr->xl);US_Print ("\n");PrintX=hx;\r
 507                 US_PrintSigned (spr->yl);US_Print ("\n");PrintX=hx;\r
 508                 US_PrintSigned (spr->xh);US_Print ("\n");PrintX=hx;\r
 509                 US_PrintSigned (spr->yh);US_Print ("\n");PrintX=hx;\r
 510                 US_PrintSigned (spr->shifts);US_Print ("\n");PrintX=hx;\r
 511                 if (!block)\r
 512                 {\r
 513                         US_Print ("-----");\r
 514                 }\r
 515                 else\r
 516                 {\r
 517                         mem = block->sourceoffset[3]+5*block->planesize[3];\r
 518                         mem = (mem+15)&(~15);           // round to paragraphs\r
 519                         US_PrintUnsigned (mem);\r
 520                 }\r
 521 \r
 522                 oldsprite = sprite;\r
 523                 do\r
 524                 {\r
 525                 //\r
 526                 // draw the current shift, then wait for key\r
 527                 //\r
 528                         VWB_Bar(topx,hy,DISPWIDTH,bottomy-hy,WHITE);\r
 529                         if (block)\r
 530                         {\r
 531                                 PrintX = topx;\r
 532                                 PrintY = hy;\r
 533                                 US_Print ("Shift:");\r
 534                                 US_PrintUnsigned (shift);\r
 535                                 US_Print ("\n");\r
 536                                 VWB_DrawSprite (topx+16+shift*2,PrintY,sprite);\r
 537                         }\r
 538 \r
 539                         VW_UpdateScreen();\r
 540 \r
 541                         scan = IN_WaitForKey ();\r
 542 \r
 543                         switch (scan)\r
 544                         {\r
 545                         case sc_UpArrow:\r
 546                                 sprite++;\r
 547                                 break;\r
 548                         case sc_DownArrow:\r
 549                                 sprite--;\r
 550                                 break;\r
 551                         case sc_LeftArrow:\r
 552                                 if (--shift == -1)\r
 553                                         shift = 3;\r
 554                                 break;\r
 555                         case sc_RightArrow:\r
 556                                 if (++shift == 4)\r
 557                                         shift = 0;\r
 558                                 break;\r
 559                         case sc_Escape:\r
 560                                 return;\r
 561                         }\r
 562 \r
 563                 } while (sprite == oldsprite);\r
 564 \r
 565   } while (1);\r
 566 \r
 567 \r
 568 }\r
 569 \r
 570 #endif\r
 571 \r
 572 /*\r
 573 ==========================\r
 574 =\r
 575 = ClearMemory\r
 576 =\r
 577 ==========================\r
 578 */\r
 579 \r
 580 void ClearMemory (global_game_variables_t *gvar)\r
 581 {\r
 582 #ifdef __16_PM__\r
 583         PM_UnlockMainMem(gvar);\r
 584 #endif\r
 585         //sd\r
 586         MM_SortMem (gvar);\r
 587 }\r
 588 \r
 589 /*\r
 590 ==========================\r
 591 =\r
 592 = Quit\r
 593 =\r
 594 ==========================\r
 595 */\r
 596 \r
 597 void Quit (global_game_variables_t *gvar, char *error)\r
 598 {\r
 599         //unsigned              finscreen;\r
 600         memptr  screen=0;\r
 601 \r
 602         ClearMemory (gvar);\r
 603         if (!*error)\r
 604         {\r
 605 // #ifndef JAPAN\r
 606 //              CA_CacheGrChunk (ORDERSCREEN);\r
 607 //              screen = grsegs[ORDERSCREEN];\r
 608 // #endif\r
 609 //              WriteConfig ();\r
 610         }\r
 611         else\r
 612         {\r
 613 //              CA_CacheGrChunk (ERRORSCREEN);\r
 614 //              screen = grsegs[ERRORSCREEN];\r
 615         }\r
 616         Shutdown16(gvar);\r
 617 \r
 618         if (error && *error)\r
 619         {\r
 620                 //movedata((unsigned)screen,7,0xb800,0,7*160);\r
 621                 gotoxy (10,4);\r
 622                 fprintf(stderr, "%s\n", error);\r
 623                 gotoxy (1,8);\r
 624                 exit(1);\r
 625         }\r
 626         else\r
 627         if (!error || !(*error))\r
 628         {\r
 629                 clrscr();\r
 630 #ifndef JAPAN\r
 631                 movedata ((unsigned)screen,7,0xb800,0,4000);\r
 632                 gotoxy(1,24);\r
 633 #endif\r
 634 //asm   mov     bh,0\r
 635 //asm   mov     dh,23   // row\r
 636 //asm   mov     dl,0    // collumn\r
 637 //asm   mov ah,2\r
 638 //asm   int     0x10\r
 639         }\r
 640 \r
 641         exit(0);\r
 642 }\r
 643 \r
 644 //===========================================================================\r
 645 \r
 646 #ifdef __WATCOMC__\r
 647 //\r
 648 // for mary4 (XT)\r
 649 // this is from my XT's BIOS\r
 650 // http://www.phatcode.net/downloads.php?id=101\r
 651 //\r
 652 void turboXT(byte bakapee)\r
 653 {\r
 654         __asm {\r
 655                 push    ax\r
 656                 push    bx\r
 657                 push    cx\r
 658                 in      al, 61h                         //; Read equipment flags\r
 659                 xor     al, bakapee                     //;   toggle speed\r
 660                 out     61h, al                         //; Write new flags back\r
 661 \r
 662                 mov     bx, 0F89h                       //; low pitch blip\r
 663                 and     al, 4                           //; Is turbo mode set?\r
 664                 jz      @@do_beep\r
 665                 mov     bx, 52Eh                        //; high pitch blip\r
 666 \r
 667         @@do_beep:\r
 668                 mov     al, 10110110b           //; Timer IC 8253 square waves\r
 669                 out     43h, al                         //;   channel 2, speaker\r
 670                 mov     ax, bx\r
 671                 out     42h, al                         //;   send low order\r
 672                 mov     al, ah                          //;   load high order\r
 673                 out     42h, al                         //;   send high order\r
 674                 in      al, 61h                         //; Read IC 8255 machine status\r
 675                 push    ax\r
 676                 or      al, 00000011b\r
 677                 out     61h, al                         //; Turn speaker on\r
 678                 mov     cx, 2000h\r
 679         @@delay:\r
 680                 loop    @@delay\r
 681                 pop     ax\r
 682                 out     61h, al                         //; Turn speaker off\r
 683                 pop     cx\r
 684                 pop     bx\r
 685                 pop     ax\r
 686         }\r
 687 }\r
 688 #endif\r
 689 \r
 690 const char *word_to_binary(word x)\r
 691 {\r
 692         static char b[17];\r
 693         int z;\r
 694 \r
 695         b[0] = '\0';\r
 696         for (z = 16; z > 0; z >>= 1)\r
 697         {\r
 698                 strcat(b, ((x & z) == z) ? "1" : "0");\r
 699         }\r
 700         return b;\r
 701 }\r
 702 \r
 703 const char *nibble_to_binary(nibble x)\r
 704 {\r
 705         static char b[9];\r
 706         int z;\r
 707 \r
 708         b[0] = '\0';\r
 709         for (z = 8; z > 0; z >>= 1)\r
 710         {\r
 711                 strcat(b, ((x & z) == z) ? "1" : "0");\r
 712         }\r
 713         return b;\r
 714 }\r
 715 \r
 716 const char *boolean_to_binary(boolean x)\r
 717 {\r
 718         static char b[9];\r
 719         int z;\r
 720 \r
 721         b[0] = '\0';\r
 722         for (z = 1; z > 0; z >>= 1)\r
 723         {\r
 724                 strcat(b, ((x & z) == z) ? "1" : "0");\r
 725         }\r
 726         return b;\r
 727 }\r
 728 \r
 729 void nibbletest()\r
 730 {\r
 731         nibble pee;\r
 732         printf("nibbletest\n");\r
 733         /* nibble to binary string */\r
 734         for(pee=0;pee<18;pee++)\r
 735                 printf("        %u %s\n", pee, nibble_to_binary(pee));\r
 736         printf("        sizeof(nibble)=%s\n", nibble_to_binary(sizeof(nibble)));\r
 737         printf("end of nibble test\n");\r
 738 }\r
 739 \r
 740 void booleantest()\r
 741 {\r
 742         boolean pee;\r
 743         printf("booleantest\n");\r
 744         /* boolean to binary string */\r
 745         for(pee=0;pee<4;pee++)\r
 746                 printf("        %u %s\n", pee, boolean_to_binary(pee));\r
 747         printf("        sizeof(boolean)=%s\n", boolean_to_binary(sizeof(boolean)));\r
 748         printf("end of boolean test\n");\r
 749 }\r