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