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,&joypadenabled,sizeof(joypadenabled));\r
 175                 read(file,&joystickprogressive,sizeof(joystickprogressive));\r
 176                 read(file,&joystickport,sizeof(joystickport));\r
 177 \r
 178                 read(file,&dirscan,sizeof(dirscan));\r
 179                 read(file,&buttonscan,sizeof(buttonscan));\r
 180                 read(file,&buttonmouse,sizeof(buttonmouse));\r
 181                 read(file,&buttonjoy,sizeof(buttonjoy));\r
 182 \r
 183                 read(file,&viewsize,sizeof(viewsize));\r
 184                 read(file,&mouseadjustment,sizeof(mouseadjustment));\r
 185 \r
 186                 close(file);\r
 187 \r
 188                 /*if (sd == sdm_AdLib && !AdLibPresent && !SoundBlasterPresent)\r
 189                 {\r
 190                         sd = sdm_PC;\r
 191                         sd = smm_Off;\r
 192                 }\r
 193 \r
 194                 if ((sds == sds_SoundBlaster && !SoundBlasterPresent) ||\r
 195                         (sds == sds_SoundSource && !SoundSourcePresent))\r
 196                         sds = sds_Off;*/\r
 197 \r
 198                 if (!MousePresent)\r
 199                         mouseenabled = false;\r
 200                 if (!JoysPresent[joystickport])\r
 201                         joystickenabled = false;\r
 202 \r
 203                 MainMenu[6].active=1;\r
 204                 MainItems.curpos=0;\r
 205         }\r
 206         else\r
 207         {\r
 208         //\r
 209         // no config file, so select by hardware\r
 210         //\r
 211 /*              if (SoundBlasterPresent || AdLibPresent)\r
 212                 {\r
 213                         sd = sdm_AdLib;\r
 214                         sm = smm_AdLib;\r
 215                 }\r
 216                 else\r
 217                 {\r
 218                         sd = sdm_PC;\r
 219                         sm = smm_Off;\r
 220                 }\r
 221 \r
 222                 if (SoundBlasterPresent)\r
 223                         sds = sds_SoundBlaster;\r
 224                 else if (SoundSourcePresent)\r
 225                         sds = sds_SoundSource;\r
 226                 else\r
 227                         sds = sds_Off;*/\r
 228 \r
 229                 if (MousePresent)\r
 230                         mouseenabled = true;\r
 231 \r
 232                 joystickenabled = false;\r
 233                 joypadenabled = false;\r
 234                 joystickport = 0;\r
 235                 joystickprogressive = false;\r
 236 \r
 237                 viewsize = 15;\r
 238                 mouseadjustment=5;\r
 239         }\r
 240 \r
 241         SD_SetMusicMode (sm);\r
 242         SD_SetSoundMode (sd);\r
 243         SD_SetDigiDevice (sds);\r
 244 }\r
 245 \r
 246 \r
 247 /*\r
 248 ====================\r
 249 =\r
 250 = WriteConfig\r
 251 =\r
 252 ====================\r
 253 */\r
 254 \r
 255 void WriteConfig(void)\r
 256 {\r
 257         int                                      file;\r
 258 \r
 259         file = open(CONFIGNAME,O_CREAT | O_BINARY | O_WRONLY,\r
 260                                 S_IREAD | S_IWRITE | S_IFREG);\r
 261 \r
 262         if (file != -1)\r
 263         {\r
 264 //              write(file,Scores,sizeof(HighScore) * MaxScores);\r
 265 \r
 266 //              write(file,&SoundMode,sizeof(SoundMode));\r
 267 //              write(file,&MusicMode,sizeof(MusicMode));\r
 268 //              write(file,&DigiMode,sizeof(DigiMode));\r
 269 \r
 270                 write(file,&mouseenabled,sizeof(mouseenabled));\r
 271                 write(file,&joystickenabled,sizeof(joystickenabled));\r
 272                 write(file,&joypadenabled,sizeof(joypadenabled));\r
 273                 write(file,&joystickprogressive,sizeof(joystickprogressive));\r
 274                 write(file,&joystickport,sizeof(joystickport));\r
 275 \r
 276                 write(file,&dirscan,sizeof(dirscan));\r
 277                 write(file,&buttonscan,sizeof(buttonscan));\r
 278                 write(file,&buttonmouse,sizeof(buttonmouse));\r
 279                 write(file,&buttonjoy,sizeof(buttonjoy));\r
 280 \r
 281 //              write(file,&viewsize,sizeof(viewsize));\r
 282                 write(file,&mouseadjustment,sizeof(mouseadjustment));\r
 283 \r
 284                 close(file);\r
 285         }\r
 286 }\r
 287 #endif\r
 288 //===========================================================================\r
 289 \r
 290 /*\r
 291 ===================\r
 292 =\r
 293 = FizzleFade\r
 294 =\r
 295 ===================\r
 296 */\r
 297 \r
 298 boolean FizzleFade (unsigned source, unsigned dest, unsigned width, unsigned height, unsigned frames, boolean abortable, global_game_variables_t *gvar)\r
 299 {\r
 300         word            p,pixperframe;\r
 301         unsigned        drawofs,pagedelta;\r
 302         byte            mask,maskb[8] = {1,2,4,8};\r
 303         unsigned        x,y,frame;\r
 304         long            rndval;\r
 305         word            screenseg;\r
 306 #ifdef __WATCOMC__\r
 307         unsigned        esorig;//,q;\r
 308 #endif\r
 309 \r
 310         pagedelta = dest-source;\r
 311         rndval = 1;\r
 312 #ifdef __WATCOMC__\r
 313         esorig = 0;// q = 16;\r
 314 #endif\r
 315         x = y = 0;\r
 316         pixperframe = (dword)(gvar->video.page[0].width*gvar->video.page[0].height)/frames;\r
 317         screenseg = SCREENSEG;\r
 318 \r
 319         IN_StartAck (gvar);\r
 320 \r
 321 //      modexClearRegion(&(gvar->video.page[0]), 0, 0, gvar->video.page[0].width, gvar->video.page[0].height, 0);\r
 322 //      modexClearRegion(&(gvar->video.page[1]), 0, 0, gvar->video.page[0].width, gvar->video.page[0].height, 15);\r
 323 \r
 324 #ifdef __WATCOMC__\r
 325         __asm {\r
 326                 mov     [esorig],es\r
 327         }\r
 328 #endif\r
 329 //      TimeCount=\r
 330         frame=0;\r
 331         do      // while (1)\r
 332         {\r
 333                 if (abortable && IN_CheckAck (gvar) )\r
 334                         return true;\r
 335 \r
 336                 __asm {\r
 337                         mov     es,[screenseg]\r
 338                 }\r
 339 \r
 340                 for (p=0;p<pixperframe;p++)\r
 341                 {\r
 342                         __asm {\r
 343                                 //\r
 344                                 // seperate random value into x/y pair\r
 345                                 //\r
 346                                 mov     ax,[WORD PTR rndval]\r
 347                                 mov     dx,[WORD PTR rndval+2]\r
 348                                 mov     bx,ax\r
 349                                 dec     bl\r
 350                                 mov     [BYTE PTR y],bl                 // low 8 bits - 1 = y xoordinate\r
 351                                 mov     bx,ax\r
 352                                 mov     cx,dx\r
 353                                 mov     [BYTE PTR x],ah                 // next 9 bits = x xoordinate\r
 354                                 mov     [BYTE PTR x+1],dl\r
 355                                 //\r
 356                                 // advance to next random element\r
 357                                 //\r
 358                                 shr     dx,1\r
 359                                 rcr     ax,1\r
 360                                 jnc     noxor\r
 361                                 xor     dx,0x0001\r
 362                                 xor     ax,0x2000\r
 363 #ifdef __BORLANDC__\r
 364                         }\r
 365 #endif\r
 366 noxor:\r
 367 #ifdef __BORLANDC__\r
 368                         __asm {\r
 369 #endif\r
 370                                 mov     [WORD PTR rndval],ax\r
 371                                 mov     [WORD PTR rndval+2],dx\r
 372                         }\r
 373 \r
 374                         if (x>width || y>height)\r
 375 //                      if ((x>width || y>height) && (x<width*2 && y<height*2))\r
 376                                 continue;\r
 377 //                      drawofs = source+(gvar->video.ofs.ylookup[y]) + (x>>2);\r
 378                         drawofs = source+(y*gvar->video.page[0].stridew) + (x>>2);\r
 379 \r
 380                         //\r
 381                         // copy one pixel\r
 382                         //\r
 383                         mask = x&3;\r
 384                         VGAREADMAP(mask);\r
 385                         mask = maskb[mask];\r
 386                         VGAMAPMASK(mask);\r
 387 \r
 388                         __asm {\r
 389                                 mov     di,[drawofs]\r
 390                                 mov     al,[es:di]\r
 391                                 add     di,[pagedelta]\r
 392                                 mov     [es:di],al\r
 393                         }\r
 394 \r
 395                         if (rndval == 1)                // entire sequence has been completed\r
 396                                 return false;\r
 397                 }\r
 398                 frame++;\r
 399 //--            while (TimeCount<frame){}//;            // don't go too fast\r
 400                 delay(1);\r
 401         } while (1);\r
 402 #ifdef __WATCOMC__\r
 403         __asm {\r
 404                 mov     es,[esorig]\r
 405         }\r
 406         return false;\r
 407 #endif\r
 408 }\r
 409 \r
 410 //===========================================================================\r
 411 \r
 412 /*\r
 413 ==================\r
 414 =\r
 415 = DebugMemory\r
 416 =\r
 417 ==================\r
 418 */\r
 419 \r
 420 void DebugMemory_(global_game_variables_t *gvar, boolean q)\r
 421 {\r
 422         /*VW_FixRefreshBuffer ();\r
 423         US_CenterWindow (16,7);\r
 424 \r
 425         US_CPrint ("Memory Usage");\r
 426         US_CPrint ("------------");\r
 427         US_Print ("Total         :");\r
 428         US_PrintUnsigned (mminfo.mainmem/1024);\r
 429         US_Print ("k\nFree        :");\r
 430         US_PrintUnsigned (MM_UnusedMemory()/1024);\r
 431         US_Print ("k\nWith purge:");\r
 432         US_PrintUnsigned (MM_TotalFree()/1024);\r
 433         US_Print ("k\n");\r
 434         VW_UpdateScreen();*/\r
 435         if(q){\r
 436         printf("========================================\n");\r
 437         printf("                DebugMemory_\n");\r
 438         printf("========================================\n");}\r
 439         if(q) { printf("Memory Usage\n");\r
 440         printf("------------\n"); }else printf("        %c%c", 0xD3, 0xC4);\r
 441         printf("Total:  "); if(q) printf("      "); printf("%uk", gvar->mmi.mainmem/1024);\r
 442         if(q) printf("\n"); else printf("       ");\r
 443         printf("Free:   "); if(q) printf("      "); printf("%uk", MM_UnusedMemory(gvar)/1024);\r
 444         if(q) printf("\n"); else printf("       ");\r
 445         printf("With purge:"); if(q) printf("   "); printf("%uk\n", MM_TotalFree(gvar)/1024);\r
 446         if(q) printf("------------\n");\r
 447 #ifdef __WATCOMC__\r
 448         //IN_Ack ();\r
 449 #endif\r
 450 //      if(q) MM_ShowMemory (gvar);\r
 451 }\r
 452 \r
 453 /*\r
 454 ===================\r
 455 =\r
 456 = TestSprites\r
 457 =\r
 458 ===================\r
 459 */\r
 460 \r
 461 #if 0\r
 462 #define DISPWIDTH       110\r
 463 #define TEXTWIDTH   40\r
 464 void TestSprites(void)\r
 465 {\r
 466         int hx,hy,sprite,oldsprite,bottomy,topx,shift;\r
 467         spritetabletype far *spr;\r
 468         spritetype _seg *block;\r
 469         unsigned        mem,scan;\r
 470 \r
 471 \r
 472         VW_FixRefreshBuffer ();\r
 473         US_CenterWindow (30,17);\r
 474 \r
 475         US_CPrint ("Sprite Test");\r
 476         US_CPrint ("-----------");\r
 477 \r
 478         hy=PrintY;\r
 479         hx=(PrintX+56)&(~7);\r
 480         topx = hx+TEXTWIDTH;\r
 481 \r
 482         US_Print ("Chunk:\nWidth:\nHeight:\nOrgx:\nOrgy:\nXl:\nYl:\nXh:\nYh:\n"\r
 483                           "Shifts:\nMem:\n");\r
 484 \r
 485         bottomy = PrintY;\r
 486 \r
 487         sprite = STARTSPRITES;\r
 488         shift = 0;\r
 489 \r
 490         do\r
 491         {\r
 492                 if (sprite>=STARTTILE8)\r
 493                         sprite = STARTTILE8-1;\r
 494                 else if (sprite<STARTSPRITES)\r
 495                         sprite = STARTSPRITES;\r
 496 \r
 497                 spr = &spritetable[sprite-STARTSPRITES];\r
 498                 block = (spritetype _seg *)grsegs[sprite];\r
 499 \r
 500                 VWB_Bar (hx,hy,TEXTWIDTH,bottomy-hy,WHITE);\r
 501 \r
 502                 PrintX=hx;\r
 503                 PrintY=hy;\r
 504                 US_PrintUnsigned (sprite);US_Print ("\n");PrintX=hx;\r
 505                 US_PrintUnsigned (spr->width);US_Print ("\n");PrintX=hx;\r
 506                 US_PrintUnsigned (spr->height);US_Print ("\n");PrintX=hx;\r
 507                 US_PrintSigned (spr->orgx);US_Print ("\n");PrintX=hx;\r
 508                 US_PrintSigned (spr->orgy);US_Print ("\n");PrintX=hx;\r
 509                 US_PrintSigned (spr->xl);US_Print ("\n");PrintX=hx;\r
 510                 US_PrintSigned (spr->yl);US_Print ("\n");PrintX=hx;\r
 511                 US_PrintSigned (spr->xh);US_Print ("\n");PrintX=hx;\r
 512                 US_PrintSigned (spr->yh);US_Print ("\n");PrintX=hx;\r
 513                 US_PrintSigned (spr->shifts);US_Print ("\n");PrintX=hx;\r
 514                 if (!block)\r
 515                 {\r
 516                         US_Print ("-----");\r
 517                 }\r
 518                 else\r
 519                 {\r
 520                         mem = block->sourceoffset[3]+5*block->planesize[3];\r
 521                         mem = (mem+15)&(~15);           // round to paragraphs\r
 522                         US_PrintUnsigned (mem);\r
 523                 }\r
 524 \r
 525                 oldsprite = sprite;\r
 526                 do\r
 527                 {\r
 528                 //\r
 529                 // draw the current shift, then wait for key\r
 530                 //\r
 531                         VWB_Bar(topx,hy,DISPWIDTH,bottomy-hy,WHITE);\r
 532                         if (block)\r
 533                         {\r
 534                                 PrintX = topx;\r
 535                                 PrintY = hy;\r
 536                                 US_Print ("Shift:");\r
 537                                 US_PrintUnsigned (shift);\r
 538                                 US_Print ("\n");\r
 539                                 VWB_DrawSprite (topx+16+shift*2,PrintY,sprite);\r
 540                         }\r
 541 \r
 542                         VW_UpdateScreen();\r
 543 \r
 544                         scan = IN_WaitForKey ();\r
 545 \r
 546                         switch (scan)\r
 547                         {\r
 548                         case sc_UpArrow:\r
 549                                 sprite++;\r
 550                                 break;\r
 551                         case sc_DownArrow:\r
 552                                 sprite--;\r
 553                                 break;\r
 554                         case sc_LeftArrow:\r
 555                                 if (--shift == -1)\r
 556                                         shift = 3;\r
 557                                 break;\r
 558                         case sc_RightArrow:\r
 559                                 if (++shift == 4)\r
 560                                         shift = 0;\r
 561                                 break;\r
 562                         case sc_Escape:\r
 563                                 return;\r
 564                         }\r
 565 \r
 566                 } while (sprite == oldsprite);\r
 567 \r
 568   } while (1);\r
 569 \r
 570 \r
 571 }\r
 572 \r
 573 #endif\r
 574 \r
 575 /*\r
 576 ==========================\r
 577 =\r
 578 = ClearMemory\r
 579 =\r
 580 ==========================\r
 581 */\r
 582 \r
 583 void ClearMemory (global_game_variables_t *gvar)\r
 584 {\r
 585 #ifdef __16_PM__\r
 586         PM_UnlockMainMem(gvar);\r
 587 #endif\r
 588         //sd\r
 589         MM_SortMem (gvar);\r
 590 }\r
 591 \r
 592 /*\r
 593 ==========================\r
 594 =\r
 595 = Quit\r
 596 =\r
 597 ==========================\r
 598 */\r
 599 \r
 600 void Quit (global_game_variables_t *gvar, char *error)\r
 601 {\r
 602         //unsigned              finscreen;\r
 603         memptr  screen=0;\r
 604 \r
 605         ClearMemory (gvar);\r
 606         if (!*error)\r
 607         {\r
 608 // #ifndef JAPAN\r
 609 //              CA_CacheGrChunk (ORDERSCREEN);\r
 610 //              screen = grsegs[ORDERSCREEN];\r
 611 // #endif\r
 612 //              WriteConfig ();\r
 613         }\r
 614         else\r
 615         {\r
 616 //              CA_CacheGrChunk (ERRORSCREEN);\r
 617 //              screen = grsegs[ERRORSCREEN];\r
 618         }\r
 619         Shutdown16(gvar);\r
 620 \r
 621         if (error && *error)\r
 622         {\r
 623                 //movedata((unsigned)screen,7,0xb800,0,7*160);\r
 624                 gotoxy (10,4);\r
 625                 fprintf(stderr, "%s\n", error);\r
 626                 gotoxy (1,8);\r
 627                 exit(1);\r
 628         }\r
 629         else\r
 630         if (!error || !(*error))\r
 631         {\r
 632                 clrscr();\r
 633 #ifndef JAPAN\r
 634                 movedata ((unsigned)screen,7,0xb800,0,4000);\r
 635                 gotoxy(1,24);\r
 636 #endif\r
 637 //asm   mov     bh,0\r
 638 //asm   mov     dh,23   // row\r
 639 //asm   mov     dl,0    // collumn\r
 640 //asm   mov ah,2\r
 641 //asm   int     0x10\r
 642         }\r
 643 \r
 644         exit(0);\r
 645 }\r
 646 \r
 647 //===========================================================================\r
 648 \r
 649 #ifdef __WATCOMC__\r
 650 //\r
 651 // for mary4 (XT)\r
 652 // this is from my XT's BIOS\r
 653 // http://www.phatcode.net/downloads.php?id=101\r
 654 //\r
 655 void turboXT(byte bakapee)\r
 656 {\r
 657         __asm {\r
 658                 push    ax\r
 659                 push    bx\r
 660                 push    cx\r
 661                 in      al, 61h                         //; Read equipment flags\r
 662                 xor     al, bakapee                     //;   toggle speed\r
 663                 out     61h, al                         //; Write new flags back\r
 664 \r
 665                 mov     bx, 0F89h                       //; low pitch blip\r
 666                 and     al, 4                           //; Is turbo mode set?\r
 667                 jz      @@do_beep\r
 668                 mov     bx, 52Eh                        //; high pitch blip\r
 669 \r
 670         @@do_beep:\r
 671                 mov     al, 10110110b           //; Timer IC 8253 square waves\r
 672                 out     43h, al                         //;   channel 2, speaker\r
 673                 mov     ax, bx\r
 674                 out     42h, al                         //;   send low order\r
 675                 mov     al, ah                          //;   load high order\r
 676                 out     42h, al                         //;   send high order\r
 677                 in      al, 61h                         //; Read IC 8255 machine status\r
 678                 push    ax\r
 679                 or      al, 00000011b\r
 680                 out     61h, al                         //; Turn speaker on\r
 681                 mov     cx, 2000h\r
 682         @@delay:\r
 683                 loop    @@delay\r
 684                 pop     ax\r
 685                 out     61h, al                         //; Turn speaker off\r
 686                 pop     cx\r
 687                 pop     bx\r
 688                 pop     ax\r
 689         }\r
 690 }\r
 691 #endif\r
 692 \r
 693 const char *word_to_binary(word x)\r
 694 {\r
 695         static char b[17];\r
 696         int z;\r
 697 \r
 698         b[0] = '\0';\r
 699         for (z = 16; z > 0; z >>= 1)\r
 700         {\r
 701                 strcat(b, ((x & z) == z) ? "1" : "0");\r
 702         }\r
 703         return b;\r
 704 }\r
 705 \r
 706 const char *nibble_to_binary(nibble x)\r
 707 {\r
 708         static char b[9];\r
 709         int z;\r
 710 \r
 711         b[0] = '\0';\r
 712         for (z = 8; z > 0; z >>= 1)\r
 713         {\r
 714                 strcat(b, ((x & z) == z) ? "1" : "0");\r
 715         }\r
 716         return b;\r
 717 }\r
 718 \r
 719 const char *boolean_to_binary(boolean x)\r
 720 {\r
 721         static char b[9];\r
 722         int z;\r
 723 \r
 724         b[0] = '\0';\r
 725         for (z = 1; z > 0; z >>= 1)\r
 726         {\r
 727                 strcat(b, ((x & z) == z) ? "1" : "0");\r
 728         }\r
 729         return b;\r
 730 }\r
 731 \r
 732 void nibbletest()\r
 733 {\r
 734         nibble pee;\r
 735         printf("nibbletest\n");\r
 736         /* nibble to binary string */\r
 737         for(pee=0;pee<18;pee++)\r
 738                 printf("        %u %s\n", pee, nibble_to_binary(pee));\r
 739         printf("        sizeof(nibble)=%s\n", nibble_to_binary(sizeof(nibble)));\r
 740         printf("end of nibble test\n");\r
 741 }\r
 742 \r
 743 void booleantest()\r
 744 {\r
 745         boolean pee;\r
 746         printf("booleantest\n");\r
 747         /* boolean to binary string */\r
 748         for(pee=0;pee<4;pee++)\r
 749                 printf("        %u %s\n", pee, boolean_to_binary(pee));\r
 750         printf("        sizeof(boolean)=%s\n", boolean_to_binary(sizeof(boolean)));\r
 751         printf("end of boolean test\n");\r
 752 }\r