1 /* Catacomb Apocalypse Source Code
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2 * Copyright (C) 1993-2014 Flat Rock Software
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; either version 2 of the License, or
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7 * (at your option) any later version.
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9 * This program is distributed in the hope that it will be useful,
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10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 * GNU General Public License for more details.
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14 * You should have received a copy of the GNU General Public License along
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15 * with this program; if not, write to the Free Software Foundation, Inc.,
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16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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22 =============================================================================
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24 ID software memory manager
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25 --------------------------
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27 Primary coder: John Carmack
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31 Quit (global_game_variables_t *gvar, char *error) function
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36 MM_SizePtr to change the size of a given pointer
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38 Multiple purge levels utilized
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40 EMS / XMS unmanaged routines
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42 =============================================================================
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46 Open Watcom port by sparky4
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49 #include "src/lib/16_mm.h"
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50 #include "src/lib/16_ca.h"
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58 =============================================================================
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62 =============================================================================
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65 void (* beforesort) (void);
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66 void (* aftersort) (void);
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67 void (* XMSaddr) (void); // far pointer to XMS driver
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70 =============================================================================
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74 =============================================================================
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78 static char *ParmStringsexmm[] = {"noems","noxms",""};
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82 ======================
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86 = Routine from p36 of Extending DOS
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88 =======================
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91 boolean MML_CheckForEMS(void)
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93 boolean emmcfems = false;
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94 word EMSPageFrame = 0;
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95 byte err=0, str[64];
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96 static char emmname[] = "EMMXXXX0"; //fix by andrius4669
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98 mov dx,OFFSET emmname //fix by andrius4669
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100 int EMM_INT // try to open EMMXXXX0 device
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106 int EMM_INT // get device info
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114 int EMM_INT // get status
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120 int EMM_INT // close handle
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126 mov ah,EMS_GETFRAME
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127 int EMS_INT // find the page frame address
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130 mov [EMSPageFrame],bx
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137 #ifdef __BORLANDC__
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141 #ifdef __BORLANDC__
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149 #ifdef __BORLANDC__
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158 // Pageframe switch to determine if there is one!
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163 #if defined(__DEBUG_PM__) || defined(__DEBUG_MM__)
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164 printf("MML_CheckForEMS: EMS error No Pageframe!\nAddress detected to be %04x\n", EMSPageFrame);
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166 }else if(!emmcfems)// if there is an error and page frame is not 0000
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168 strcpy(str,"MML_CheckForEMS: EMS error ");
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169 MM_EMSerr(str, err);
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170 printf("%s\n",str);
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179 ======================
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183 =======================
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186 byte MML_SetupEMS(global_game_variables_t *gvar)
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190 boolean errorflag=false;
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192 unsigned int EMSVer = 0;
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194 unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSpagesmapped,EMSHandle;
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195 totalEMSpages = freeEMSpages = EMSPageFrame = EMSpagesmapped = 0;
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199 int EMS_INT // make sure EMS hardware is present
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201 //mov [EMS_status],ah
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208 mov [EMSVer],ax // set EMSVer
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209 cmp al,0x32 // only work on ems 3.2 or greater
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212 mov ah,EMS_GETFRAME
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213 int EMS_INT // find the page frame address
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216 mov [EMSPageFrame],bx
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218 mov ah,EMS_GETPAGES
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219 int EMS_INT // find out how much EMS is there
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222 mov [totalEMSpages],dx
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223 mov [freeEMSpages],bx
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225 jz noEMS // no EMS at all to allocate
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229 cmp bx,[freeEMSpages]
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231 mov bx,[freeEMSpages]
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233 #ifdef __BORLANDC__
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237 #ifdef __BORLANDC__
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241 jle getpages // there is only 1,2,3,or 4 pages
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242 mov bx,4 // we can't use more than 4 pages
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243 #ifdef __BORLANDC__
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247 #ifdef __BORLANDC__
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250 mov [EMSpagesmapped],bx
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251 mov ah,EMS_ALLOCPAGES // allocate up to 64k of EMS
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257 #ifdef __BORLANDC__
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261 #ifdef __BORLANDC__
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267 #ifdef __BORLANDC__
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275 if(errorflag==true)
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277 strcpy(str,"MM_SetupEMS: EMS error ");
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278 MM_EMSerr(str, err);
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279 printf("%s\n",str);
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282 gvar->mm.totalEMSpages=totalEMSpages;
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283 gvar->mm.freeEMSpages=freeEMSpages;
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284 gvar->mm.EMSPageFrame=EMSPageFrame;
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285 gvar->mm.EMSpagesmapped=EMSpagesmapped;
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286 gvar->mm.EMSHandle=EMSHandle;
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287 gvar->mm.EMSVer=EMSVer;
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293 ======================
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297 =======================
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300 void MML_ShutdownEMS(global_game_variables_t *gvar)
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302 boolean errorflag=false;
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303 unsigned EMSHandle=gvar->mm.EMSHandle;
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308 mov ah,EMS_FREEPAGES
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314 #ifdef __BORLANDC__
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321 if(errorflag==true)
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322 Quit (gvar, "MML_ShutdownEMS: Error freeing EMS!\n"); //++++ add something
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326 ====================
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330 = Maps the 64k of EMS used by memory manager into the page frame
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331 = for general use. This only needs to be called if you are keeping
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332 = other things in EMS.
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334 ====================
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337 byte MM_MapEMS(global_game_variables_t *gvar)
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340 unsigned EMSHandle;
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342 boolean errorflag=false;
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344 EMSHandle=gvar->mm.EMSHandle;
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346 for (i=0;i<4/*MAPPAGES*/;i++)
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350 mov bx,[i] // logical page
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351 mov al,bl // physical page
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352 mov dx,[EMSHandle] // handle
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357 #ifdef __BORLANDC__
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361 #ifdef __BORLANDC__
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366 #ifdef __BORLANDC__
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373 if(errorflag==true)
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375 strcpy(str,"MM_MapEMS: EMS error ");
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376 MM_EMSerr(str, err);
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377 printf("%s\n",str);
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381 gvar->mmi.EMSmem = (i)*0x4000lu;
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385 byte MM_MapXEMS(global_game_variables_t *gvar)
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387 //SUB EMS.MapXPages (PhysicalStart, LogicalStart, NumPages, Handle)
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389 //Maps up to 4 logical EMS pages to physical pages in the page frame, where:
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390 //PhysicalStart = Physical page first logical page is mapped to
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391 //LogicalStart = First logical page to map
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392 //NumPages = Number of pages to map (1 to 4)
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393 //Handle = EMS handle logical pages are allocated to
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395 /*//Create a buffer containing the page information
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396 // FOR x = 0 TO NumPages - 1
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397 // MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x)
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400 // Regs.ax = 0x5000 //Map the pages in the buffer
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401 // Regs.cx = NumPages //to the pageframe
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402 // Regs.dx = Handle
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403 // Regs.ds = VARSEG(MapInfo$)
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404 // Regs.si = SADD(MapInfo$)
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405 // InterruptX 0x67, Regs, Regs
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406 // EMS.Error = (Regs.ax AND 0xFF00&) \ 0x100 //Store the status code
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412 boolean errorflag=false;
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414 EMSHandle=gvar->mm.EMSHandle;
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416 if(gvar->mm.EMSVer<0x40)
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419 for (i=0;i<MAPPAGES;i++)
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422 mov ah,EMS_MAPXPAGE
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423 mov cx,[i] // logical page
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424 mov al,bl // physical page
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425 mov dx,[EMSHandle] // handle
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430 #ifdef __BORLANDC__
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434 #ifdef __BORLANDC__
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439 #ifdef __BORLANDC__
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446 if(errorflag==true)
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448 //strcpy(str,"MM_MapXEMS: EMS error 0x");
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449 strcpy(str,"MM_MapXEMS: EMS error ");
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450 //itoa(err,str2,16);
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451 MM_EMSerr(str, err);
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452 printf("%s\n",str);
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453 //printf("%s%x\n",str, err);
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454 //printf("FACK! %x\n", err);
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458 gvar->mmi.EMSmem = (i)*0x4000lu;
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463 //==========================================================================
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466 ======================
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470 = Check for XMM driver
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472 =======================
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475 boolean MML_CheckForXMS(void)
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478 boolean errorflag=false;
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482 int 0x2f // query status of installed diver
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486 #ifdef __BORLANDC__
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493 if(errorflag==true) return false;
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500 ======================
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504 = Try to allocate all upper memory block
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506 =======================
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509 void MML_SetupXMS(global_game_variables_t *gvar)
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517 mov [WORD PTR XMSaddr],bx
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518 mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver
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522 mov ah,XMS_ALLOCUMB
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523 mov dx,0xffff // try for largest block possible
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524 //mov ax,dx // Set available Kbytes.
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525 call [DWORD PTR XMSaddr]
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529 cmp bl,0xb0 // error: smaller UMB is available
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532 mov ah,XMS_ALLOCUMB
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533 call [DWORD PTR XMSaddr] // DX holds largest available UMB
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535 jz done // another error...
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536 #ifdef __BORLANDC__
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540 #ifdef __BORLANDC__
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545 #ifdef __BORLANDC__
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552 // printf("base=%u ", base); printf("size=%u\n", size);
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553 MML_UseSpace(base,size, gvar);
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554 gvar->mmi.XMSmem += size*16;
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555 gvar->mm.UMBbase[gvar->mm.numUMBs] = base;
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556 gvar->mm.numUMBs++;
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557 if(gvar->mm.numUMBs < MAXUMBS)
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563 ======================
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567 ======================
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570 void MML_ShutdownXMS(global_game_variables_t *gvar)
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575 for (i=0;i<gvar->mm.numUMBs;i++)
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577 base = gvar->mm.UMBbase[i];
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581 call [DWORD PTR XMSaddr]
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587 //==========================================================================
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590 ======================
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594 = Marks a range of paragraphs as usable by the memory manager
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595 = This is used to mark space for the near heap, far heap, ems page frame,
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596 = and upper memory blocks
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598 ======================
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602 extra = oldend - (segstart+seglength);
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606 //++++emsver stuff!
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607 if(segm>1)/// || extra>=0x10000lu)
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608 //if(extra>0xfffflu)
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612 //MML_UseSpace(segstart, seglength, gvar);
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614 printf("MML_UseSpace: Segment spans two blocks!\n");
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616 printf("segm=%u ", segm);
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617 printf("ex=%lu ", extra);
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618 printf("old=%u ", oldend);
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619 printf("start+seglen=%lu\n", segstart+seglength);
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620 printf("segsta=%x ", segstart);
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621 printf("len=%lu ", scan->length);
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622 printf("seglen=%lu ", seglength);
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623 printf("segmlen=%lu\n", segmlen);
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625 //++++todo: linked list of segment!
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627 void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
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629 mmblocktype far *scan,far *last;
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634 scan = last = gvar->mm.mmhead;
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635 gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory
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638 // search for the block that contains the range of segments
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640 while (scan->start+scan->length < segstart)
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647 // find out how many blocks it spans!
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649 /*for(;seglength>=0x10000;seglength-=0xFFFF)
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651 //printf(" seglen=%lu\n", segmlen);
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656 // take the given range out of the block
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658 oldend = scan->start + scan->length;
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659 extra = oldend - (segstart+((unsigned)seglength));
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662 printf("========================================\n");
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663 printf("start=%x ", scan->start);
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664 printf("old=%u ", oldend);
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665 printf("start+seglen=%lu\n", segstart+seglength);
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666 printf("segsta=%x ", segstart);
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667 printf("len=%lu ", scan->length);
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668 printf("seglen=%lu ", seglength);
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670 printf("MML_UseSpace: Segment spans two blocks! %d\n", extra);
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671 printf("========================================\n");
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675 if (segstart == scan->start)
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677 last->next = scan->next; // unlink block
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682 scan->length = segstart-scan->start; // shorten block
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687 gvar->mm.mmnew->useptr = NULL;
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689 gvar->mm.mmnew->next = scan->next;
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690 scan->next = gvar->mm.mmnew;
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691 gvar->mm.mmnew->start = segstart+seglength;
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692 gvar->mm.mmnew->length = extra;
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693 gvar->mm.mmnew->attributes = LOCKBIT;
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694 }//else if(segm>0) goto segu;
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698 //==========================================================================
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701 ====================
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705 = We are out of blocks, so free a purgable block
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707 ====================
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710 void MML_ClearBlock(global_game_variables_t *gvar)
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712 mmblocktype far *scan;//,far *last;
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714 scan = gvar->mm.mmhead->next;
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718 if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS))
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720 MM_FreePtr(scan->useptr, gvar);
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726 printf("MM_ClearBlock: No purgable blocks!\n");
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730 //==========================================================================
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733 ===================
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737 = Grabs all space from turbo with malloc/farmalloc
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738 = Allocates bufferseg misc buffer
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740 ===================
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743 void MM_Startup(global_game_variables_t *gvar)
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746 //dword length,seglength;
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747 dword length; word seglength;
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749 word segstart;//,endfree;
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751 if(gvar->mm.mmstarted)
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754 gvar->mm.mmstarted = true;
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755 gvar->mm.bombonerror = true;
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758 // set up the linked list (everything in the free list;
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760 gvar->mm.mmhead = NULL;
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761 gvar->mm.mmfree = &(gvar->mm.mmblocks[0]);
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762 for(i=0;i<MAXBLOCKS-1;i++)
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763 gvar->mm.mmblocks[i].next = &(gvar->mm.mmblocks[i+1]);
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764 gvar->mm.mmblocks[i].next = NULL;
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767 // locked block of all memory until we punch out free space
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770 gvar->mm.mmhead = gvar->mm.mmnew; // this will allways be the first node
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771 gvar->mm.mmnew->start = 0;
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772 gvar->mm.mmnew->length = 0xffff;
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773 gvar->mm.mmnew->attributes = LOCKBIT;
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774 gvar->mm.mmnew->next = NULL;
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775 gvar->mm.mmrover = gvar->mm.mmhead;
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778 // get all available near conventional memory segments
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783 length=(word)_memavl();//(word)coreleft();
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784 //start = gvar->mm.nearheap = _fmalloc(length);
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786 start = (void __far *)(gvar->mm.nearheap = _nmalloc(length));
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788 #ifdef __BORLANDC__
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789 start = (void far *)(gvar->mm.nearheap = malloc(length));
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792 length -= 16-(FP_OFF(start)&15);
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793 length -= SAVENEARHEAP;
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794 seglength = length / 16; // now in paragraphs
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795 segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
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796 MML_UseSpace(segstart,seglength, gvar);
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797 gvar->mmi.nearheap = length;
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798 //0000printf("near: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);
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801 // get all available far conventional memory segments
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806 #ifdef __BORLANDC__
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807 // printf("farcoreleft() %lu\n", farcoreleft());
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808 // printf("(farcoreleft()+32)-_FCORELEFT %d\n", (sword)((farcoreleft()+32)-_FCORELEFT));
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811 start = gvar->mm.farheap = _fmalloc(length);//start = gvar->mm.farheap = halloc(length, 1);
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813 length -= 16-(FP_OFF(start)&15);
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814 length -= SAVEFARHEAP;
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815 seglength = length / 16; // now in paragraphs
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816 segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
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817 MML_UseSpace(segstart,seglength, gvar);
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818 gvar->mmi.farheap = length;
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819 //0000printf("far: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);
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821 gvar->mmi.mainmem = gvar->mmi.nearheap + gvar->mmi.farheap;
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823 #if !defined(__16_PM__)// && defined(__WATCOMC__)
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827 // detect EMS and allocate up to 64K at page frame
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829 gvar->mmi.EMSmem = 0;
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830 //goto emsskip; //0000
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831 for(i = 1;i < _argc;i++)
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833 if(US_CheckParm(_argv[i],ParmStringsexmm) == 0)
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834 goto emsskip; // param NOEMS
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836 if(MML_CheckForEMS())
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838 MML_SetupEMS(gvar); // allocate space
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839 //16_PM: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT!
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840 MML_UseSpace(gvar->mm.EMSPageFrame,(MAPPAGES)*0x4000lu, gvar);
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841 //if(gvar->pm.emm.EMSVer<0x40)
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842 MM_MapEMS(gvar); // map in used pages
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844 //MM_MapXEMS(gvar); // map in used pages
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848 // detect XMS and get upper memory blocks
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851 gvar->mmi.XMSmem = 0;
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852 goto xmsskip;//0000
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853 for(i = 1;i < _argc;i++)
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855 if(US_CheckParm( _argv[i],ParmStringsexmm) == 0)
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856 goto xmsskip; // param NOXMS
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858 if(MML_CheckForXMS())
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860 MML_SetupXMS(gvar); // allocate as many UMBs as possible
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868 // allocate the misc buffer
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870 gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block
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872 MM_GetPtr(&(gvar->mm.bufferseg),BUFFERSIZE, gvar);
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875 //==========================================================================
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878 ====================
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882 = Frees all conventional, EMS, and XMS allocated
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884 ====================
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887 void MM_Shutdown(global_game_variables_t *gvar)
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889 if(!(gvar->mm.mmstarted))
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892 _ffree(gvar->mm.farheap);// printf(" far freed\n");
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894 _nfree(gvar->mm.nearheap);// printf(" near freed\n");
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896 #ifdef __BORLANDC__
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897 free(gvar->mm.nearheap);// printf(" near freed\n");
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904 if(MML_CheckForEMS()){ MML_ShutdownEMS(gvar); }//printf(" EMS freed\n"); }
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905 if(MML_CheckForXMS()){ MML_ShutdownXMS(gvar); }//printf(" XMS freed\n"); }
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913 //==========================================================================
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916 ====================
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920 = Allocates an unlocked, unpurgable block
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922 ====================
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925 void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
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927 mmblocktype far *scan,far *lastscan,far *endscan
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928 ,far *purge,far *next;
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930 unsigned needed,startseg;
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932 needed = (size+15)/16; // convert size from bytes to paragraphs
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934 GETNEWBLOCK; // fill in start and next after a spot is found
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935 gvar->mm.mmnew->length = needed;
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936 gvar->mm.mmnew->useptr = baseptr;
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937 //if(gvar->mm.mmnew->useptr==NULL){
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938 #ifdef __DEBUG_MM__
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940 printf("MM_GetPtr\n");
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942 printf(" baseptr=%Fp ", baseptr); printf("useptr=%Fp\n", gvar->mm.mmnew->useptr);
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943 printf(" *baseptr=%Fp ", *baseptr); printf("*useptr=%Fp\n", *(gvar->mm.mmnew->useptr));
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944 printf(" &baseptr=%Fp ", &baseptr); printf("&useptr=%Fp\n", &(gvar->mm.mmnew->useptr));
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947 //Quit(gvar, "gvar->mm.mmnew->useptr==NULL"); }
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948 gvar->mm.mmnew->attributes = BASEATTRIBUTES;
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951 for (search = 0; search<3; search++)
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954 // first search: try to allocate right after the rover, then on up
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955 // second search: search from the head pointer up to the rover
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956 // third search: compress memory, then scan from start
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957 if (search == 1 && gvar->mm.mmrover == gvar->mm.mmhead)
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963 lastscan = gvar->mm.mmrover;
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964 scan = gvar->mm.mmrover->next;
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968 lastscan = gvar->mm.mmhead;
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969 scan = gvar->mm.mmhead->next;
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970 endscan = gvar->mm.mmrover;
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974 lastscan = gvar->mm.mmhead;
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975 scan = gvar->mm.mmhead->next;
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980 startseg = lastscan->start + lastscan->length;
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982 while (scan != endscan)
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984 if (scan->start - startseg >= needed)
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987 // got enough space between the end of lastscan and
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988 // the start of scan, so throw out anything in the middle
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989 // and allocate the new block
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991 purge = lastscan->next;
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992 lastscan->next = gvar->mm.mmnew;
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993 gvar->mm.mmnew->start = *(unsigned *)baseptr = startseg;
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994 gvar->mm.mmnew->next = scan;
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995 while ( purge != scan)
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996 { // free the purgable block
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997 next = purge->next;
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999 purge = next; // purge another if not at scan
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1001 gvar->mm.mmrover = gvar->mm.mmnew;
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1002 return; // good allocation!
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1006 // if this block is purge level zero or locked, skip past it
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1008 if ( (scan->attributes & LOCKBIT)
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1009 || !(scan->attributes & PURGEBITS) )
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1012 startseg = lastscan->start + lastscan->length;
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1016 scan=scan->next; // look at next line
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1020 if (gvar->mm.bombonerror)
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1022 #ifdef __WATCOMC__
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1025 printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap));
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1026 Quit(gvar, "for stability reasons the program will shut down! wwww\n");
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1029 gvar->mm.mmerror = true;
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1032 //==========================================================================
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1035 ====================
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1039 = Deallocates an unlocked, purgable block
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1041 ====================
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1044 void MM_FreePtr (memptr *baseptr, global_game_variables_t *gvar)
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1046 mmblocktype far *scan,far *last;
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1048 last = gvar->mm.mmhead;
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1049 scan = last->next;
\r
1051 if (baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block
\r
1052 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1054 while(scan->useptr != baseptr && scan)
\r
1057 scan = scan->next;
\r
1061 Quit (gvar, "MM_FreePtr: Block not found!");
\r
1063 last->next = scan->next;
\r
1067 //==========================================================================
\r
1070 =====================
\r
1074 = Sets the purge level for a block (locked blocks cannot be made purgable)
\r
1076 =====================
\r
1079 void MM_SetPurge (memptr *baseptr, int purge, global_game_variables_t *gvar)
\r
1081 mmblocktype far *start;
\r
1083 start = gvar->mm.mmrover;
\r
1087 if (gvar->mm.mmrover->useptr == baseptr)
\r
1090 gvar->mm.mmrover = gvar->mm.mmrover->next;
\r
1092 if (!gvar->mm.mmrover)
\r
1093 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1094 else if (gvar->mm.mmrover == start)
\r
1095 Quit (gvar, "MM_SetPurge: Block not found!");
\r
1099 gvar->mm.mmrover->attributes &= ~PURGEBITS;
\r
1100 gvar->mm.mmrover->attributes |= purge;
\r
1103 //==========================================================================
\r
1106 =====================
\r
1110 = Locks / unlocks the block
\r
1112 =====================
\r
1115 void MM_SetLock (memptr *baseptr, boolean locked, global_game_variables_t *gvar)
\r
1117 mmblocktype far *start;
\r
1119 start = gvar->mm.mmrover;
\r
1123 if (gvar->mm.mmrover->useptr == baseptr)
\r
1126 gvar->mm.mmrover = gvar->mm.mmrover->next;
\r
1128 if (!gvar->mm.mmrover)
\r
1129 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1130 else if (gvar->mm.mmrover == start)
\r
1131 Quit (gvar, "MM_SetLock: Block not found!");
\r
1135 gvar->mm.mmrover->attributes &= ~LOCKBIT;
\r
1136 gvar->mm.mmrover->attributes |= locked*LOCKBIT;
\r
1139 //==========================================================================
\r
1142 =====================
\r
1146 = Throws out all purgable stuff and compresses movable blocks
\r
1148 =====================
\r
1151 void MM_SortMem (global_game_variables_t *gvar)
\r
1153 mmblocktype far *scan,far *last,far *next;
\r
1154 unsigned start,length,source,dest,oldborder;
\r
1155 //++++int playing;
\r
1158 // lock down a currently playing sound
\r
1160 /*++++ playing = SD_SoundPlaying ();
\r
1163 switch (SoundMode)
\r
1166 playing += STARTPCSOUNDS;
\r
1169 playing += STARTADLIBSOUNDS;
\r
1172 MM_SetLock((memptr *)&audiosegs[playing],true);
\r
1177 oldborder = gvar->video.bordercolor;
\r
1178 gvar->video.bordercolor = modexPalOverscan(15);
\r
1183 scan = gvar->mm.mmhead;
\r
1185 last = NULL; // shut up compiler warning
\r
1189 if(scan->attributes & LOCKBIT)
\r
1192 // block is locked, so try to pile later blocks right after it
\r
1194 start = scan->start + scan->length;
\r
1198 if(scan->attributes & PURGEBITS)
\r
1201 // throw out the purgable block
\r
1203 next = scan->next;
\r
1204 FREEBLOCK(scan); //MM_FreeBlock(scan, gvar);
\r
1205 last->next = next;
\r
1212 // push the non purgable block on top of the last moved block
\r
1214 if(scan->start != start)
\r
1216 length = scan->length;
\r
1217 source = scan->start;
\r
1219 while(length > 0xf00)
\r
1221 movedata(source,0,dest,0,0xf00*16);
\r
1226 movedata(source,0,dest,0,length*16);
\r
1228 scan->start = start;
\r
1229 *(unsigned *)scan->useptr = start;
\r
1231 start = scan->start + scan->length;
\r
1236 scan = scan->next; // go to next block
\r
1239 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1244 VL_ColorBorder (oldborder, &gvar->video);
\r
1246 /*++++ if(playing)
\r
1247 MM_SetLock((memptr *)&audiosegs[playing],false);*/
\r
1250 //==========================================================================
\r
1253 =====================
\r
1257 =====================
\r
1260 #ifdef __WATCOMC__
\r
1261 //#define MMSMPANVID
\r
1262 #define MMSMSCANINFO
\r
1265 void MM_ShowMemory (global_game_variables_t *gvar)
\r
1267 mmblocktype far *scan;
\r
1268 unsigned color,temp,x,y ,w,q,width;
\r
1270 byte scratch[160],scratch0[4096],str[16];
\r
1271 mmshowmemoryinfo_t scaninfo[MAXBLOCKS];
\r
1273 if(!gvar->video.page[0].width) gvar->video.page[0].sw = gvar->video.page[0].width = 320; //to prevent division by 0
\r
1274 //-- VL_SetLineWidth(40, gvar);
\r
1275 //temp = gvar->video.ofs.bufferofs;
\r
1276 //gvar->video.ofs.bufferofs = gvar->video.ofs.displayofs;
\r
1277 temp = BDOFSCONV gvar->video.BOFS;
\r
1278 gvar->video.BOFS = gvar->video.DOFS;
\r
1279 scan = gvar->mm.mmhead;
\r
1283 width = gvar->video.page[0].width; q = 0;
\r
1285 CA_OpenDebug (gvar);
\r
1288 scaninfo[q].scan = scan;
\r
1289 strcpy(scratch, AARESET);
\r
1290 if(scan->attributes & PURGEBITS)
\r
1292 color = 6; // dark purple = purgable
\r
1293 strcpy(scratch0, AAMAGENTA); // dark purple = purgable
\r
1295 color = 2; // medium blue = non purgable
\r
1296 strcpy(scratch0, AABLUE); // medium blue = non purgable
\r
1298 if(scan->attributes & LOCKBIT)
\r
1300 color = 1; // red = locked
\r
1301 strcpy(scratch0, AARED); // red = locked
\r
1303 if (scan->start<=end)
\r
1305 printf("\nend==%d\n\n", end);
\r
1306 strcat(scratch, "MM_ShowMemory: Memory block order currupted!\n");
\r
1307 strcat(scratch, "End's Size: ");
\r
1308 ultoa (end,str,10);
\r
1309 strcat (scratch,str);
\r
1310 strcat(scratch, "\nscan->start's Size: ");
\r
1311 ultoa (scan->start,str,10);
\r
1312 strcat (scratch,str);
\r
1313 write(gvar->handle.debughandle,scratch,strlen(scratch));
\r
1314 Quit (gvar, "MM_ShowMemory: Memory block order currupted!");
\r
1316 end = scan->length-1;
\r
1317 y = scan->start/width;
\r
1318 x = scan->start%width;
\r
1319 scaninfo[q].x = x;
\r
1320 scaninfo[q].y = y;
\r
1321 VW_Hlin(x,x+end,y,color,gvar);
\r
1322 VL_Plot(x,y,5,gvar);
\r
1323 //++==++==optional strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_");
\r
1324 for(w=(scan->start)/80;w<=end/80;w++)
\r
1326 //printf("+ %u %lu\n", w, scan->length);
\r
1327 strcat(scratch0, "+");
\r
1330 if (scan->next && scan->next->start > end+1)
\r
1332 VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,3,gvar); // black = free//now green
\r
1333 strcat(scratch0, AARESET);
\r
1334 //++==++==optional strcat(scratch0, "\n");
\r
1335 strcat(scratch0,AAGREEN);
\r
1336 for(w=(end+1)/80;w<=((scan->next->start-scan->start)/80);w++)
\r
1338 //printf("0 %x %u %lu\n", scan->next->start, w, scan->length);
\r
1339 strcat(scratch0,"0");
\r
1341 //printf("==================\n");
\r
1342 //printf("w=%u start=%04x next=%04x end=%lu\n", w/80, scan->start, (scan->next->start), end+1);
\r
1343 //printf("==================\n");
\r
1344 strcat(scratch0, "\n");
\r
1347 else {//if(scan->next->start <= scan->start){
\r
1348 scan->next->start=scan->start+0x1000;
\r
1349 strcat(scratch0, AARESET);
\r
1350 strcat(scratch0, "\n");
\r
1351 strcat(scratch0,AAGREEN);
\r
1352 for(w=(end+1);w<=(0x1000/80);w++)
\r
1354 //printf("0 %x %x %u\n", scan->start, w);
\r
1355 strcat(scratch0,"0");
\r
1357 printf("================\n");
\r
1358 printf("w=%x start=%x next=%x end=%u\n", w, scan->start, (scan->next->start), end+1);
\r
1359 printf("================\n");
\r
1363 strcat(scratch0, AARESET);
\r
1364 //strcat(scratch0,"\n");
\r
1365 strcat(scratch,"Seg:");
\r
1366 ultoa (scan->start,str,16);
\r
1367 strcat (scratch,str);
\r
1368 // strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);
\r
1369 strcat (scratch,"\tSize:");
\r
1370 ultoa ((unsigned)scan->length,str,10);
\r
1371 strcat (scratch,str);
\r
1372 // strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);
\r
1373 strcat (scratch,"\tOwner:0x");
\r
1374 owner = (unsigned)scan->useptr;
\r
1375 ultoa (owner,str,16);
\r
1376 strcat (scratch,str);
\r
1377 strcat (scratch,"\n");
\r
1378 write(gvar->handle.debughandle,scratch,strlen(scratch));
\r
1379 write(gvar->handle.debughandle,scratch0,strlen(scratch0));
\r
1380 //fprintf(stdout, "%s", scratch);
\r
1382 scan = scan->next;
\r
1384 //if(color!=6) IN_Ack(gvar);
\r
1387 CA_CloseDebug (gvar);
\r
1391 int dx,dy,odx,ody;
\r
1392 odx = gvar->video.page[0].dx;
\r
1393 ody = gvar->video.page[0].dy;
\r
1395 while(!gvar->in.inst->Keyboard[sc_Escape])
\r
1397 if(gvar->in.inst->Keyboard[sc_UpArrow])
\r
1402 else if(gvar->in.inst->Keyboard[sc_DownArrow])
\r
1404 if(dy<gvar->video.page[0].height-gvar->video.page[0].sh)
\r
1407 if(gvar->in.inst->Keyboard[sc_LeftArrow])
\r
1412 else if(gvar->in.inst->Keyboard[sc_RightArrow])
\r
1414 if(dx<gvar->video.page[0].width-gvar->video.page[0].sw)
\r
1418 modexPanPage(&gvar->video.page[0], dx, dy);
\r
1419 VL_ShowPage(&gvar->video.page[0], 1, 1);
\r
1422 gvar->video.page[0].dx = odx;
\r
1423 gvar->video.page[0].dy = ody;
\r
1426 #ifdef MMSMSCANINFO
\r
1429 unsigned maxq = q;
\r
1431 ScanCode scancode;
\r
1433 word qq, ccolor = 3;
\r
1435 // VL_ClearVideo (8);
\r
1436 for (qq = 0,done = false;!done;)
\r
1438 if(scaninfo[qq].scan->attributes & PURGEBITS)
\r
1440 ccolor = 6; // dark purple = purgable
\r
1441 strcpy(scratch1, AAMAGENTA); // dark purple = purgable
\r
1442 //printf("%s", AAMAGENTA);
\r
1444 ccolor = 2; // medium blue = non purgable
\r
1445 strcpy(scratch1, AABLUE); // medium blue = non purgable
\r
1446 //printf("%s", AABLUE);
\r
1448 if(scaninfo[qq].scan->attributes & LOCKBIT)
\r
1450 ccolor = 1; // red = locked
\r
1451 strcpy(scratch1, AARED); // red = locked
\r
1452 //printf("%s", AARED);
\r
1454 end = scaninfo[qq].scan->length-1;
\r
1455 /*typedef struct mmblockstruct{
\r
1456 word start,length;
\r
1457 unsigned attributes;
\r
1458 memptr *useptr; // pointer to the segment start
\r
1459 struct mmblockstruct far *next;
\r
1461 //modexprint(page, x, y, t, tlsw, color, bgcolor, vidsw, const byte *str);
\r
1462 #define MMSMPRINTMEMINFO modexprint(&(gvar->video.page[0]), xpos, ypos, 1, 0, ccolor, 8, gvar->video.VL_Started, global_temp_status_text); ypos+=8;
\r
1463 if(!gvar->video.VL_Started) clrscr(); else
\r
1465 VL_ShowPage(&gvar->video.page[0], 1, 0);
\r
1466 modexClearRegion(&gvar->video.page[0], 0, 0, gvar->video.page[0].width, gvar->video.page[0].height, 8);
\r
1468 sprintf(global_temp_status_text, "block #%04u", qq); MMSMPRINTMEMINFO
\r
1469 // sprintf(global_temp_status_text, "%Fp", scaninfo[qq].scan->useptr); MMSMPRINTMEMINFO
\r
1470 sprintf(global_temp_status_text, "%04x", (unsigned)scaninfo[qq].scan->useptr); MMSMPRINTMEMINFO
\r
1471 sprintf(global_temp_status_text, "size: %05u", (unsigned)scaninfo[qq].scan->length); MMSMPRINTMEMINFO
\r
1472 if (scaninfo[qq].scan->next && scaninfo[qq].scan->next->start > end+1)
\r
1474 sprintf(global_temp_status_text, "free: %05u", (unsigned)(scaninfo[qq].scan->next->start-scaninfo[qq].scan->start)); MMSMPRINTMEMINFO
\r
1476 if(gvar->video.VL_Started)
\r
1478 y = ypos;//scaninfo[qq].scan->start/width;
\r
1479 x = xpos;//scaninfo[qq].scan->start%width;
\r
1480 VW_Hlin(x,x+end,y,ccolor,gvar);
\r
1481 VL_Plot(x,y,5,gvar);
\r
1485 printf("%s", scratch1);
\r
1486 printf("%s", AAGREY); printf("_");
\r
1487 for(w=(scaninfo[qq].scan->start)/80;w<=end/80;w++)
\r
1489 //strcat(scratch1, "+");
\r
1495 if (scaninfo[qq].scan->next && scaninfo[qq].scan->next->start > end+1) if(!gvar->video.VL_Started)
\r
1497 //strcat(scratch1, AARESET);
\r
1498 printf("%s", AARESET);
\r
1499 //strcat(scratch1,AAGREEN);
\r
1500 printf("%s", AAGREEN);
\r
1501 for(w=(end+1)/80;w<=((scaninfo[qq].scan->next->start-scaninfo[qq].scan->start)/80);w++)
\r
1503 //strcat(scratch1,"0");
\r
1506 }else VW_Hlin(x+end+1,x+(scaninfo[qq].scan->next->start-scaninfo[qq].scan->start),y,3,gvar); // black = free//now green
\r
1509 if(gvar->video.VL_Started)
\r
1511 //if (scan->next && scan->next->start > end+1) free
\r
1513 ypos = 16;//(gvar->video.page[0].sh-(32));//8*4
\r
1517 //printf("%s\n", scratch1);
\r
1518 printf("%s", AARESET);
\r
1521 while (!(scancode = gvar->in.inst->LastScan)){}
\r
1523 IN_ClearKey(scancode);
\r
1526 case sc_LeftArrow:
\r
1530 case sc_RightArrow:
\r
1542 if(gvar->video.VL_Started) IN_Ack(gvar);
\r
1544 gvar->video.BOFS = (byte __far *)temp;
\r
1547 //==========================================================================
\r
1550 =====================
\r
1554 =====================
\r
1557 void MM_DumpData (global_game_variables_t *gvar)
\r
1559 mmblocktype far *scan,far *best;
\r
1560 long lowest,oldlowest;
\r
1565 #ifdef __WATCOMC__
\r
1566 _nfree(gvar->mm.nearheap);
\r
1568 #ifdef __BORLANDC__
\r
1569 free(gvar->mm.nearheap);
\r
1571 #ifdef __BORLANDC__
\r
1572 dumpfile = fopen ("mmdump.16b","w");
\r
1574 #ifdef __WATCOMC__
\r
1575 dumpfile = fopen ("mmdump.16w","w");
\r
1578 printf("MM_DumpData: Couldn't open MMDUMP.16!\n");
\r
1585 oldlowest = lowest;
\r
1588 scan = gvar->mm.mmhead;
\r
1591 owner = (unsigned)scan->useptr;
\r
1593 if (owner && owner<lowest && owner > oldlowest)
\r
1599 scan = scan->next;
\r
1602 if (lowest != 0xffff)
\r
1604 if (best->attributes & PURGEBITS)
\r
1608 if (best->attributes & LOCKBIT)
\r
1612 fprintf (dumpfile,"0x%p (%c%c) = %u\n"
\r
1613 ,(unsigned)lowest,lock,purge,best->length);
\r
1616 } while (lowest != 0xffff);
\r
1619 printf("MMDUMP.16 created.\n");
\r
1622 //==========================================================================
\r
1626 ======================
\r
1630 = Returns the total free space without purging
\r
1632 ======================
\r
1635 dword MM_UnusedMemory (global_game_variables_t *gvar)
\r
1638 mmblocktype far *scan;
\r
1641 scan = gvar->mm.mmhead;
\r
1645 free += scan->next->start - (scan->start + scan->length);
\r
1646 scan = scan->next;
\r
1652 //==========================================================================
\r
1656 ======================
\r
1660 = Returns the total free space with purging
\r
1662 ======================
\r
1665 dword MM_TotalFree (global_game_variables_t *gvar)
\r
1668 mmblocktype far *scan;
\r
1671 scan = gvar->mm.mmhead;
\r
1675 if((scan->attributes&PURGEBITS) && !(scan->attributes&LOCKBIT))
\r
1676 free += scan->length;
\r
1677 free += scan->next->start - (scan->start + scan->length);
\r
1678 scan = scan->next;
\r
1684 //==========================================================================
\r
1687 =====================
\r
1691 =====================
\r
1694 void MM_Report_ (global_game_variables_t *gvar)
\r
1696 printf("========================================\n");
\r
1697 printf(" MM_Report_\n");
\r
1698 printf("========================================\n");
\r
1699 if(MML_CheckForEMS())
\r
1701 printf(" %cLIMEMS %u\n", 0xC9, gvar->pm.emm.EMSPresent);
\r
1702 printf(" %c%cEMM v%x.%x available\n", 0xC7, 0xC4, gvar->pm.emm.EMSVer>>4,gvar->pm.emm.EMSVer&0x0F);
\r
1703 printf(" %c%ctotalEMSpages: %u ", 0xC7, 0xC4, gvar->pm.emm.totalEMSpages); printf("freeEMSpages: %u\n", gvar->pm.emm.freeEMSpages);
\r
1704 printf(" %c%cEMSPageFrame: %04x\n", 0xC7, 0xC4, gvar->pm.emm.EMSPageFrame);
\r
1705 printf(" %c%cEMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.EMSmem);
\r
1707 if(MML_CheckForXMS())
\r
1709 printf(" %cXMS %u\n", 0xC9, gvar->pm.xmm.XMSPresent);
\r
1710 printf(" %c%cXMS v%x.%x available\n", 0xC7, 0xC4, XMSVer>>8,XMSVer&0x0F);
\r
1711 printf(" %c%cXMSDriver: %Fp\n", 0xC7, 0xC4, XMSDriver);
\r
1712 printf(" %c%cXMSHandle: %04x\n", 0xC7, 0xC4, gvar->pm.xmm.XMSHandle);
\r
1713 printf(" %c%cXMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.XMSmem);
\r
1715 printf(" %cConv. %u\n", 0xC9, gvar->pm.mm.MainPresent); DebugMemory_(gvar, 0);
\r
1716 //printf("mainmem: %lu\n", gvar->mmi.mainmem);
\r
1717 //printf("Total convmem: %lu ", gvar->mmi.mainmem); printf("TotalFree: %lu ", MM_TotalFree(gvar)+gvar->mmi.EMSmem+gvar->mmi.XMSmem+gvar->mmi.XMSmem); printf("TotalUsed: %lu\n", gvar->mmi.mainmem);
\r
1718 //printf(" UnusedMemory: %lu\n", MM_UnusedMemory(gvar));
\r
1719 printf("nearheap: %lu ", gvar->mmi.nearheap); printf("farheap: %lu\n", gvar->mmi.farheap);
\r
1722 //==========================================================================
\r
1725 =====================
\r
1729 =====================
\r
1732 void MM_EMSerr(byte *stri, byte err)
\r
1734 //Returns a text string describing the error code in EMS.Error.
\r
1738 strcat(stri, "successful");
\r
1741 strcat(stri, "internal error");
\r
1744 strcat(stri, "hardware malfunction");
\r
1747 strcat(stri, "busy .. retry later");
\r
1750 strcat(stri, "invalid handle");
\r
1753 strcat(stri, "undefined function requested by application");
\r
1756 strcat(stri, "no more handles available");
\r
1759 strcat(stri, "error in save or restore of mapping context");
\r
1762 strcat(stri, "insufficient memory pages in system");
\r
1765 strcat(stri, "insufficient memory pages available");
\r
1768 strcat(stri, "zero pages requested");
\r
1771 strcat(stri, "invalid logical page number encountered");
\r
1774 strcat(stri, "invalid physical page number encountered");
\r
1777 strcat(stri, "page-mapping hardware state save area is full");
\r
1780 strcat(stri, "save of mapping context failed");
\r
1783 strcat(stri, "restore of mapping context failed");
\r
1786 strcat(stri, "undefined subfunction");
\r
1789 strcat(stri, "undefined attribute type");
\r
1792 strcat(stri, "feature not supported");
\r
1795 strcat(stri, "successful, but a portion of the source region has been overwritten");
\r
1798 strcat(stri, "length of source or destination region exceeds length of region allocated to either source or destination handle");
\r
1801 strcat(stri, "conventional and expanded memory regions overlap");
\r
1804 strcat(stri, "offset within logical page exceeds size of logical page");
\r
1807 strcat(stri, "region length exceeds 1 MB");
\r
1810 strcat(stri, "source and destination EMS regions have same handle and overlap");
\r
1813 strcat(stri, "memory source or destination type undefined");
\r
1816 strcat(stri, "specified alternate map register or DMA register set not supported");
\r
1819 strcat(stri, "all alternate map register or DMA register sets currently allocated");
\r
1822 strcat(stri, "alternate map register or DMA register sets not supported");
\r
1825 strcat(stri, "undefined or unallocated alternate map register or DMA register set");
\r
1828 strcat(stri, "dedicated DMA channels not supported");
\r
1831 strcat(stri, "specified dedicated DMA channel not supported");
\r
1834 strcat(stri, "no such handle name");
\r
1837 strcat(stri, "a handle found had no name, or duplicate handle name");
\r
1840 strcat(stri, "attempted to wrap around 1M conventional address space");
\r
1843 strcat(stri, "source array corrupted");
\r
1846 strcat(stri, "operating system denied access");
\r
1849 strcat(stri, "undefined error");
\r
1853 //==========================================================================
\r
1856 =====================
\r
1860 =====================
\r
1863 void MM_BombOnError (boolean bomb, global_game_variables_t *gvar)
\r
1865 gvar->mm.bombonerror = bomb;
\r
1869 void MM_GetNewBlock(global_game_variables_t *gvar)
\r
1871 if(!gvar->mm.mmfree)
\r
1872 MML_ClearBlock(gvar);
\r
1873 gvar->mm.mmnew=gvar->mm.mmfree;
\r
1874 gvar->mm.mmfree=gvar->mm.mmfree->next;
\r
1875 if(!(gvar->mm.mmnew=gvar->mm.mmfree))
\r
1877 printf("MM_GETNEWBLOCK: No free blocks!\n");
\r
1880 gvar->mm.mmfree=gvar->mm.mmfree->next;
\r
1883 void MM_FreeBlock(mmblocktype *x, global_game_variables_t *gvar)
\r
1886 x->next=gvar->mm.mmfree;
\r
1887 gvar->mm.mmfree=x;
\r
1891 void xms_call(byte v, global_game_variables_t *gvar)
\r
1893 dword XMSDriver = gvar->pm.xmm.XMSDriver;
\r
1896 call [DWORD PTR XMSDriver]
\r
1900 /*void MM_seguin(void)
\r
1910 void MM_segude(void)
\r
1918 pull data from far and put it into ds var
\r
1925 bp bottem of stack
\r