1 /* Project 16 Source Code~
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2 * Copyright (C) 2012-2017 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover
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4 * This file is part of Project 16.
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6 * Project 16 is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 3 of the License, or
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9 * (at your option) any later version.
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11 * Project 16 is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>, or
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18 * write to the Free Software Foundation, Inc., 51 Franklin Street,
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19 * Fifth Floor, Boston, MA 02110-1301 USA.
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26 =============================================================================
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28 ID software memory manager
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29 --------------------------
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31 Primary coder: John Carmack
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35 Quit (global_game_variables_t *gvar, char *error) function
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40 MM_SizePtr to change the size of a given pointer
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42 Multiple purge levels utilized
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44 EMS / XMS unmanaged routines
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46 =============================================================================
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50 Open Watcom port by sparky4
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53 #include "src/lib/16_mm.h"
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54 #include "src/lib/16_ca.h"
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62 =============================================================================
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66 =============================================================================
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69 void (* beforesort) (void);
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70 void (* aftersort) (void);
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71 void (* XMSaddr) (void); // far pointer to XMS driver
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74 =============================================================================
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78 =============================================================================
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82 static char *ParmStringsexmm[] = {"noems","noxms",""};
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86 ======================
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90 = Routine from p36 of Extending DOS
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92 =======================
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95 boolean MML_CheckForEMS(void)
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97 boolean emmcfems = false;
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98 word EMSPageFrame = 0;
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99 byte err=0, str[64];
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100 static char emmname[] = "EMMXXXX0"; //fix by andrius4669
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102 mov dx,OFFSET emmname //fix by andrius4669
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104 int EMM_INT // try to open EMMXXXX0 device
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110 int EMM_INT // get device info
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118 int EMM_INT // get status
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124 int EMM_INT // close handle
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130 mov ah,EMS_GETFRAME
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131 int EMS_INT // find the page frame address
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134 mov [EMSPageFrame],bx
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141 #ifdef __BORLANDC__
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145 #ifdef __BORLANDC__
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153 #ifdef __BORLANDC__
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162 // Pageframe switch to determine if there is one!
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167 #if defined(__DEBUG_PM__) || defined(__DEBUG_MM__)
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168 printf("MML_CheckForEMS: EMS error No Pageframe!\nAddress detected to be %04x\n", EMSPageFrame);
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170 }else if(!emmcfems)// if there is an error and page frame is not 0000
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172 strcpy(str,"MML_CheckForEMS: EMS error ");
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173 MM_EMSerr(str, err);
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174 printf("%s\n",str);
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183 ======================
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187 =======================
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190 byte MML_SetupEMS(global_game_variables_t *gvar)
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194 boolean errorflag=false;
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196 unsigned int EMSVer = 0;
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198 unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSpagesmapped,EMSHandle;
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199 totalEMSpages = freeEMSpages = EMSPageFrame = EMSpagesmapped = 0;
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203 int EMS_INT // make sure EMS hardware is present
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205 //mov [EMS_status],ah
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212 mov [EMSVer],ax // set EMSVer
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213 cmp al,0x32 // only work on ems 3.2 or greater
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216 mov ah,EMS_GETFRAME
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217 int EMS_INT // find the page frame address
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220 mov [EMSPageFrame],bx
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222 mov ah,EMS_GETPAGES
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223 int EMS_INT // find out how much EMS is there
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226 mov [totalEMSpages],dx
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227 mov [freeEMSpages],bx
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229 jz noEMS // no EMS at all to allocate
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233 cmp bx,[freeEMSpages]
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235 mov bx,[freeEMSpages]
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237 #ifdef __BORLANDC__
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241 #ifdef __BORLANDC__
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245 jle getpages // there is only 1,2,3,or 4 pages
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246 mov bx,4 // we can't use more than 4 pages
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247 #ifdef __BORLANDC__
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251 #ifdef __BORLANDC__
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254 mov [EMSpagesmapped],bx
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255 mov ah,EMS_ALLOCPAGES // allocate up to 64k of EMS
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261 #ifdef __BORLANDC__
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265 #ifdef __BORLANDC__
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271 #ifdef __BORLANDC__
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279 if(errorflag==true)
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281 strcpy(str,"MM_SetupEMS: EMS error ");
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282 MM_EMSerr(str, err);
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283 printf("%s\n",str);
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286 gvar->mm.totalEMSpages=totalEMSpages;
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287 gvar->mm.freeEMSpages=freeEMSpages;
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288 gvar->mm.EMSPageFrame=EMSPageFrame;
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289 gvar->mm.EMSpagesmapped=EMSpagesmapped;
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290 gvar->mm.EMSHandle=EMSHandle;
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291 gvar->mm.EMSVer=EMSVer;
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297 ======================
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301 =======================
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304 void MML_ShutdownEMS(global_game_variables_t *gvar)
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306 boolean errorflag=false;
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307 unsigned EMSHandle=gvar->mm.EMSHandle;
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312 mov ah,EMS_FREEPAGES
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318 #ifdef __BORLANDC__
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325 if(errorflag==true)
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326 Quit (gvar, "MML_ShutdownEMS: Error freeing EMS!\n"); //++++ add something
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330 ====================
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334 = Maps the 64k of EMS used by memory manager into the page frame
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335 = for general use. This only needs to be called if you are keeping
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336 = other things in EMS.
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338 ====================
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341 byte MM_MapEMS(global_game_variables_t *gvar)
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344 unsigned EMSHandle;
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346 boolean errorflag=false;
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348 EMSHandle=gvar->mm.EMSHandle;
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350 for (i=0;i<4/*MAPPAGES*/;i++)
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354 mov bx,[i] // logical page
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355 mov al,bl // physical page
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356 mov dx,[EMSHandle] // handle
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361 #ifdef __BORLANDC__
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365 #ifdef __BORLANDC__
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370 #ifdef __BORLANDC__
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377 if(errorflag==true)
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379 strcpy(str,"MM_MapEMS: EMS error ");
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380 MM_EMSerr(str, err);
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381 printf("%s\n",str);
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385 gvar->mmi.EMSmem = (i)*0x4000lu;
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389 byte MM_MapXEMS(global_game_variables_t *gvar)
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391 //SUB EMS.MapXPages (PhysicalStart, LogicalStart, NumPages, Handle)
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393 //Maps up to 4 logical EMS pages to physical pages in the page frame, where:
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394 //PhysicalStart = Physical page first logical page is mapped to
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395 //LogicalStart = First logical page to map
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396 //NumPages = Number of pages to map (1 to 4)
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397 //Handle = EMS handle logical pages are allocated to
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399 /*//Create a buffer containing the page information
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400 // FOR x = 0 TO NumPages - 1
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401 // MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x)
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404 // Regs.ax = 0x5000 //Map the pages in the buffer
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405 // Regs.cx = NumPages //to the pageframe
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406 // Regs.dx = Handle
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407 // Regs.ds = VARSEG(MapInfo$)
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408 // Regs.si = SADD(MapInfo$)
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409 // InterruptX 0x67, Regs, Regs
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410 // EMS.Error = (Regs.ax AND 0xFF00&) \ 0x100 //Store the status code
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416 boolean errorflag=false;
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418 EMSHandle=gvar->mm.EMSHandle;
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420 if(gvar->mm.EMSVer<0x40)
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423 for (i=0;i<MAPPAGES;i++)
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426 mov ah,EMS_MAPXPAGE
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427 mov cx,[i] // logical page
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428 mov al,bl // physical page
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429 mov dx,[EMSHandle] // handle
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434 #ifdef __BORLANDC__
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438 #ifdef __BORLANDC__
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443 #ifdef __BORLANDC__
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450 if(errorflag==true)
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452 //strcpy(str,"MM_MapXEMS: EMS error 0x");
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453 strcpy(str,"MM_MapXEMS: EMS error ");
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454 //itoa(err,str2,16);
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455 MM_EMSerr(str, err);
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456 printf("%s\n",str);
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457 //printf("%s%x\n",str, err);
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458 //printf("FACK! %x\n", err);
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462 gvar->mmi.EMSmem = (i)*0x4000lu;
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467 //==========================================================================
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470 ======================
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474 = Check for XMM driver
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476 =======================
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479 boolean MML_CheckForXMS(void)
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482 boolean errorflag=false;
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486 int 0x2f // query status of installed diver
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490 #ifdef __BORLANDC__
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497 if(errorflag==true) return false;
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504 ======================
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508 = Try to allocate all upper memory block
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510 =======================
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513 void MML_SetupXMS(global_game_variables_t *gvar)
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521 mov [WORD PTR XMSaddr],bx
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522 mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver
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526 mov ah,XMS_ALLOCUMB
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527 mov dx,0xffff // try for largest block possible
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528 //mov ax,dx // Set available Kbytes.
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529 call [DWORD PTR XMSaddr]
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533 cmp bl,0xb0 // error: smaller UMB is available
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536 mov ah,XMS_ALLOCUMB
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537 call [DWORD PTR XMSaddr] // DX holds largest available UMB
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539 jz done // another error...
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540 #ifdef __BORLANDC__
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544 #ifdef __BORLANDC__
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549 #ifdef __BORLANDC__
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556 // printf("base=%u ", base); printf("size=%u\n", size);
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557 MML_UseSpace(base,size, gvar);
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558 gvar->mmi.XMSmem += size*16;
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559 gvar->mm.UMBbase[gvar->mm.numUMBs] = base;
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560 gvar->mm.numUMBs++;
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561 if(gvar->mm.numUMBs < MAXUMBS)
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567 ======================
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571 ======================
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574 void MML_ShutdownXMS(global_game_variables_t *gvar)
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579 for (i=0;i<gvar->mm.numUMBs;i++)
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581 base = gvar->mm.UMBbase[i];
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585 call [DWORD PTR XMSaddr]
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591 //==========================================================================
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594 ======================
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598 = Marks a range of paragraphs as usable by the memory manager
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599 = This is used to mark space for the near heap, far heap, ems page frame,
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600 = and upper memory blocks
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602 ======================
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606 extra = oldend - (segstart+seglength);
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610 //++++emsver stuff!
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611 if(segm>1)/// || extra>=0x10000lu)
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612 //if(extra>0xfffflu)
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616 //MML_UseSpace(segstart, seglength, gvar);
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618 printf("MML_UseSpace: Segment spans two blocks!\n");
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620 printf("segm=%u ", segm);
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621 printf("ex=%lu ", extra);
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622 printf("old=%u ", oldend);
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623 printf("start+seglen=%lu\n", segstart+seglength);
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624 printf("segsta=%x ", segstart);
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625 printf("len=%lu ", scan->length);
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626 printf("seglen=%lu ", seglength);
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627 printf("segmlen=%lu\n", segmlen);
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629 //++++todo: linked list of segment!
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631 void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
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633 mmblocktype far *scan,far *last;
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638 scan = last = gvar->mm.mmhead;
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639 gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory
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642 // search for the block that contains the range of segments
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644 while (scan->start+scan->length < segstart)
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651 // find out how many blocks it spans!
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653 /*for(;seglength>=0x10000;seglength-=0xFFFF)
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655 //printf(" seglen=%lu\n", segmlen);
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660 // take the given range out of the block
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662 oldend = scan->start + scan->length;
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663 extra = oldend - (segstart+((unsigned)seglength));
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666 printf("========================================\n");
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667 printf("start=%x ", scan->start);
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668 printf("old=%u ", oldend);
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669 printf("start+seglen=%lu\n", segstart+seglength);
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670 printf("segsta=%x ", segstart);
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671 printf("len=%lu ", scan->length);
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672 printf("seglen=%lu ", seglength);
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674 printf("MML_UseSpace: Segment spans two blocks! %d\n", extra);
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675 printf("========================================\n");
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679 if (segstart == scan->start)
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681 last->next = scan->next; // unlink block
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686 scan->length = segstart-scan->start; // shorten block
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691 gvar->mm.mmnew->useptr = NULL;
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693 gvar->mm.mmnew->next = scan->next;
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694 scan->next = gvar->mm.mmnew;
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695 gvar->mm.mmnew->start = segstart+seglength;
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696 gvar->mm.mmnew->length = extra;
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697 gvar->mm.mmnew->attributes = LOCKBIT;
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698 }//else if(segm>0) goto segu;
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702 //==========================================================================
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705 ====================
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709 = We are out of blocks, so free a purgable block
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711 ====================
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714 void MML_ClearBlock(global_game_variables_t *gvar)
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716 mmblocktype far *scan;//,far *last;
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718 scan = gvar->mm.mmhead->next;
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722 if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS))
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724 MM_FreePtr(scan->useptr, gvar);
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730 printf("MM_ClearBlock: No purgable blocks!\n");
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734 //==========================================================================
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737 ===================
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741 = Grabs all space from turbo with malloc/farmalloc
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742 = Allocates bufferseg misc buffer
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744 ===================
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747 void MM_Startup(global_game_variables_t *gvar)
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750 //dword length,seglength;
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751 dword length; word seglength;
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753 word segstart;//,endfree;
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755 if(gvar->mm.mmstarted)
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758 gvar->mm.mmstarted = true;
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759 gvar->mm.bombonerror = true;
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762 // set up the linked list (everything in the free list;
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764 gvar->mm.mmhead = NULL;
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765 gvar->mm.mmfree = &(gvar->mm.mmblocks[0]);
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766 for(i=0;i<MAXBLOCKS-1;i++)
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767 gvar->mm.mmblocks[i].next = &(gvar->mm.mmblocks[i+1]);
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768 gvar->mm.mmblocks[i].next = NULL;
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771 // locked block of all memory until we punch out free space
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774 gvar->mm.mmhead = gvar->mm.mmnew; // this will allways be the first node
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775 gvar->mm.mmnew->start = 0;
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776 gvar->mm.mmnew->length = 0xffff;
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777 gvar->mm.mmnew->attributes = LOCKBIT;
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778 gvar->mm.mmnew->next = NULL;
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779 gvar->mm.mmrover = gvar->mm.mmhead;
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782 // get all available near conventional memory segments
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787 length=(word)_memavl();//(word)coreleft();
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788 //start = gvar->mm.nearheap = _fmalloc(length);
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790 start = (void __far *)(gvar->mm.nearheap = _nmalloc(length));
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792 #ifdef __BORLANDC__
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793 start = (void far *)(gvar->mm.nearheap = malloc(length));
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796 length -= 16-(FP_OFF(start)&15);
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797 length -= SAVENEARHEAP;
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798 seglength = length / 16; // now in paragraphs
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799 segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
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800 MML_UseSpace(segstart,seglength, gvar);
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801 gvar->mmi.nearheap = length;
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802 //0000printf("near: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);
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805 // get all available far conventional memory segments
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810 #ifdef __BORLANDC__
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811 // printf("farcoreleft() %lu\n", farcoreleft());
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812 // printf("(farcoreleft()+32)-_FCORELEFT %d\n", (sword)((farcoreleft()+32)-_FCORELEFT));
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815 start = gvar->mm.farheap = _fmalloc(length);//start = gvar->mm.farheap = halloc(length, 1);
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817 length -= 16-(FP_OFF(start)&15);
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818 length -= SAVEFARHEAP;
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819 seglength = length / 16; // now in paragraphs
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820 segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
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821 MML_UseSpace(segstart,seglength, gvar);
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822 gvar->mmi.farheap = length;
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823 //0000printf("far: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);
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825 gvar->mmi.mainmem = gvar->mmi.nearheap + gvar->mmi.farheap;
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827 #if !defined(__16_PM__)// && defined(__WATCOMC__)
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831 // detect EMS and allocate up to 64K at page frame
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833 gvar->mmi.EMSmem = 0;
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834 //goto emsskip; //0000
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835 for(i = 1;i < _argc;i++)
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837 if(US_CheckParm(_argv[i],ParmStringsexmm) == 0)
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838 goto emsskip; // param NOEMS
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840 if(MML_CheckForEMS())
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842 MML_SetupEMS(gvar); // allocate space
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843 //16_PM: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT!
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844 MML_UseSpace(gvar->mm.EMSPageFrame,(MAPPAGES)*0x4000lu, gvar);
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845 //if(gvar->pm.emm.EMSVer<0x40)
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846 MM_MapEMS(gvar); // map in used pages
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848 //MM_MapXEMS(gvar); // map in used pages
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852 // detect XMS and get upper memory blocks
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855 gvar->mmi.XMSmem = 0;
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856 goto xmsskip;//0000
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857 for(i = 1;i < _argc;i++)
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859 if(US_CheckParm( _argv[i],ParmStringsexmm) == 0)
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860 goto xmsskip; // param NOXMS
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862 if(MML_CheckForXMS())
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864 MML_SetupXMS(gvar); // allocate as many UMBs as possible
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872 // allocate the misc buffer
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874 gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block
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876 MM_GetPtr(&(gvar->mm.bufferseg),BUFFERSIZE, gvar);
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879 //==========================================================================
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882 ====================
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886 = Frees all conventional, EMS, and XMS allocated
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888 ====================
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891 void MM_Shutdown(global_game_variables_t *gvar)
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893 if(!(gvar->mm.mmstarted))
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896 _ffree(gvar->mm.farheap);// printf(" far freed\n");
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898 _nfree(gvar->mm.nearheap);// printf(" near freed\n");
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900 #ifdef __BORLANDC__
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901 free(gvar->mm.nearheap);// printf(" near freed\n");
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908 if(MML_CheckForEMS()){ MML_ShutdownEMS(gvar); }//printf(" EMS freed\n"); }
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909 if(MML_CheckForXMS()){ MML_ShutdownXMS(gvar); }//printf(" XMS freed\n"); }
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917 //==========================================================================
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920 ====================
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924 = Allocates an unlocked, unpurgable block
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926 ====================
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929 void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
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931 mmblocktype far *scan,far *lastscan,far *endscan
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932 ,far *purge,far *next;
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934 unsigned needed,startseg;
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936 needed = (size+15)/16; // convert size from bytes to paragraphs
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938 GETNEWBLOCK; // fill in start and next after a spot is found
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939 gvar->mm.mmnew->length = needed;
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940 gvar->mm.mmnew->useptr = baseptr;
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941 //if(gvar->mm.mmnew->useptr==NULL){
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942 #ifdef __DEBUG_MM__
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944 printf("MM_GetPtr\n");
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946 printf(" baseptr=%Fp ", baseptr); printf("useptr=%Fp\n", gvar->mm.mmnew->useptr);
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947 printf(" *baseptr=%Fp ", *baseptr); printf("*useptr=%Fp\n", *(gvar->mm.mmnew->useptr));
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948 printf(" &baseptr=%Fp ", &baseptr); printf("&useptr=%Fp\n", &(gvar->mm.mmnew->useptr));
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951 //Quit(gvar, "gvar->mm.mmnew->useptr==NULL"); }
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952 gvar->mm.mmnew->attributes = BASEATTRIBUTES;
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955 for (search = 0; search<3; search++)
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958 // first search: try to allocate right after the rover, then on up
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959 // second search: search from the head pointer up to the rover
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960 // third search: compress memory, then scan from start
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961 if (search == 1 && gvar->mm.mmrover == gvar->mm.mmhead)
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967 lastscan = gvar->mm.mmrover;
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968 scan = gvar->mm.mmrover->next;
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972 lastscan = gvar->mm.mmhead;
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973 scan = gvar->mm.mmhead->next;
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974 endscan = gvar->mm.mmrover;
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978 lastscan = gvar->mm.mmhead;
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979 scan = gvar->mm.mmhead->next;
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984 startseg = lastscan->start + lastscan->length;
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986 while (scan != endscan)
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988 if (scan->start - startseg >= needed)
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991 // got enough space between the end of lastscan and
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992 // the start of scan, so throw out anything in the middle
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993 // and allocate the new block
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995 purge = lastscan->next;
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996 lastscan->next = gvar->mm.mmnew;
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997 gvar->mm.mmnew->start = *(unsigned *)baseptr = startseg;
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998 gvar->mm.mmnew->next = scan;
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999 while ( purge != scan)
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1000 { // free the purgable block
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1001 next = purge->next;
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1003 purge = next; // purge another if not at scan
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1005 gvar->mm.mmrover = gvar->mm.mmnew;
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1006 return; // good allocation!
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1010 // if this block is purge level zero or locked, skip past it
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1012 if ( (scan->attributes & LOCKBIT)
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1013 || !(scan->attributes & PURGEBITS) )
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1016 startseg = lastscan->start + lastscan->length;
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1020 scan=scan->next; // look at next line
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1024 if (gvar->mm.bombonerror)
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1026 #ifdef __WATCOMC__
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1029 printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap));
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1030 Quit(gvar, "for stability reasons the program will shut down! wwww\n");
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1033 gvar->mm.mmerror = true;
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1036 //==========================================================================
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1039 ====================
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1043 = Deallocates an unlocked, purgable block
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1045 ====================
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1048 void MM_FreePtr (memptr *baseptr, global_game_variables_t *gvar)
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1050 mmblocktype far *scan,far *last;
\r
1052 last = gvar->mm.mmhead;
\r
1053 scan = last->next;
\r
1055 if (baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block
\r
1056 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1058 while(scan->useptr != baseptr && scan)
\r
1061 scan = scan->next;
\r
1065 Quit (gvar, "MM_FreePtr: Block not found!");
\r
1067 last->next = scan->next;
\r
1071 //==========================================================================
\r
1074 =====================
\r
1078 = Sets the purge level for a block (locked blocks cannot be made purgable)
\r
1080 =====================
\r
1083 void MM_SetPurge (memptr *baseptr, int purge, global_game_variables_t *gvar)
\r
1085 mmblocktype far *start;
\r
1087 start = gvar->mm.mmrover;
\r
1091 if (gvar->mm.mmrover->useptr == baseptr)
\r
1094 gvar->mm.mmrover = gvar->mm.mmrover->next;
\r
1096 if (!gvar->mm.mmrover)
\r
1097 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1098 else if (gvar->mm.mmrover == start)
\r
1099 Quit (gvar, "MM_SetPurge: Block not found!");
\r
1103 gvar->mm.mmrover->attributes &= ~PURGEBITS;
\r
1104 gvar->mm.mmrover->attributes |= purge;
\r
1107 //==========================================================================
\r
1110 =====================
\r
1114 = Locks / unlocks the block
\r
1116 =====================
\r
1119 void MM_SetLock (memptr *baseptr, boolean locked, global_game_variables_t *gvar)
\r
1121 mmblocktype far *start;
\r
1123 start = gvar->mm.mmrover;
\r
1127 if (gvar->mm.mmrover->useptr == baseptr)
\r
1130 gvar->mm.mmrover = gvar->mm.mmrover->next;
\r
1132 if (!gvar->mm.mmrover)
\r
1133 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1134 else if (gvar->mm.mmrover == start)
\r
1135 Quit (gvar, "MM_SetLock: Block not found!");
\r
1139 gvar->mm.mmrover->attributes &= ~LOCKBIT;
\r
1140 gvar->mm.mmrover->attributes |= locked*LOCKBIT;
\r
1143 //==========================================================================
\r
1146 =====================
\r
1150 = Throws out all purgable stuff and compresses movable blocks
\r
1152 =====================
\r
1155 void MM_SortMem (global_game_variables_t *gvar)
\r
1157 mmblocktype far *scan,far *last,far *next;
\r
1158 unsigned start,length,source,dest,oldborder;
\r
1159 //++++int playing;
\r
1162 // lock down a currently playing sound
\r
1164 /*++++ playing = SD_SoundPlaying ();
\r
1167 switch (SoundMode)
\r
1170 playing += STARTPCSOUNDS;
\r
1173 playing += STARTADLIBSOUNDS;
\r
1176 MM_SetLock((memptr *)&audiosegs[playing],true);
\r
1181 oldborder = gvar->video.bordercolor;
\r
1182 gvar->video.bordercolor = modexPalOverscan(15);
\r
1187 scan = gvar->mm.mmhead;
\r
1189 last = NULL; // shut up compiler warning
\r
1193 if(scan->attributes & LOCKBIT)
\r
1196 // block is locked, so try to pile later blocks right after it
\r
1198 start = scan->start + scan->length;
\r
1202 if(scan->attributes & PURGEBITS)
\r
1205 // throw out the purgable block
\r
1207 next = scan->next;
\r
1208 FREEBLOCK(scan); //MM_FreeBlock(scan, gvar);
\r
1209 last->next = next;
\r
1216 // push the non purgable block on top of the last moved block
\r
1218 if(scan->start != start)
\r
1220 length = scan->length;
\r
1221 source = scan->start;
\r
1223 while(length > 0xf00)
\r
1225 movedata(source,0,dest,0,0xf00*16);
\r
1230 movedata(source,0,dest,0,length*16);
\r
1232 scan->start = start;
\r
1233 *(unsigned *)scan->useptr = start;
\r
1235 start = scan->start + scan->length;
\r
1240 scan = scan->next; // go to next block
\r
1243 gvar->mm.mmrover = gvar->mm.mmhead;
\r
1248 VL_ColorBorder (oldborder, &gvar->video);
\r
1250 /*++++ if(playing)
\r
1251 MM_SetLock((memptr *)&audiosegs[playing],false);*/
\r
1254 //==========================================================================
\r
1257 =====================
\r
1261 =====================
\r
1264 #ifdef __WATCOMC__
\r
1265 //#define MMSMPANVID
\r
1266 #define MMSMSCANINFO
\r
1269 void MM_ShowMemory (global_game_variables_t *gvar)
\r
1271 mmblocktype far *scan;
\r
1272 unsigned color,temp,x,y ,w,q,width;
\r
1274 byte scratch[160],scratch0[4096],str[16];
\r
1275 mmshowmemoryinfo_t scaninfo[MAXBLOCKS];
\r
1277 if(!gvar->video.page[0].width) gvar->video.page[0].sw = gvar->video.page[0].width = 320; //to prevent division by 0
\r
1278 //-- VL_SetLineWidth(40, gvar);
\r
1279 //temp = gvar->video.ofs.bufferofs;
\r
1280 //gvar->video.ofs.bufferofs = gvar->video.ofs.displayofs;
\r
1281 temp = BDOFSCONV gvar->video.BOFS;
\r
1282 gvar->video.BOFS = gvar->video.DOFS;
\r
1283 scan = gvar->mm.mmhead;
\r
1287 width = gvar->video.page[0].width; q = 0;
\r
1289 CA_OpenDebug (gvar);
\r
1292 scaninfo[q].scan = scan;
\r
1293 strcpy(scratch, AARESET);
\r
1294 if(scan->attributes & PURGEBITS)
\r
1296 color = 6; // dark purple = purgable
\r
1297 strcpy(scratch0, AAMAGENTA); // dark purple = purgable
\r
1299 color = 2; // medium blue = non purgable
\r
1300 strcpy(scratch0, AABLUE); // medium blue = non purgable
\r
1302 if(scan->attributes & LOCKBIT)
\r
1304 color = 1; // red = locked
\r
1305 strcpy(scratch0, AARED); // red = locked
\r
1307 if (scan->start<=end)
\r
1309 printf("\nend==%d\n\n", end);
\r
1310 strcat(scratch, "MM_ShowMemory: Memory block order currupted!\n");
\r
1311 strcat(scratch, "End's Size: ");
\r
1312 ultoa (end,str,10);
\r
1313 strcat (scratch,str);
\r
1314 strcat(scratch, "\nscan->start's Size: ");
\r
1315 ultoa (scan->start,str,10);
\r
1316 strcat (scratch,str);
\r
1317 write(gvar->handle.debughandle,scratch,strlen(scratch));
\r
1318 Quit (gvar, "MM_ShowMemory: Memory block order currupted!");
\r
1320 end = scan->length-1;
\r
1321 y = scan->start/width;
\r
1322 x = scan->start%width;
\r
1323 scaninfo[q].x = x;
\r
1324 scaninfo[q].y = y;
\r
1325 VW_Hlin(x,x+end,y,color,gvar);
\r
1326 VL_Plot(x,y,5,gvar);
\r
1327 //++==++==optional strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_");
\r
1328 for(w=(scan->start)/80;w<=end/80;w++)
\r
1330 //printf("+ %u %lu\n", w, scan->length);
\r
1331 strcat(scratch0, "+");
\r
1334 if (scan->next && scan->next->start > end+1)
\r
1336 VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,3,gvar); // black = free//now green
\r
1337 strcat(scratch0, AARESET);
\r
1338 //++==++==optional strcat(scratch0, "\n");
\r
1339 strcat(scratch0,AAGREEN);
\r
1340 for(w=(end+1)/80;w<=((scan->next->start-scan->start)/80);w++)
\r
1342 //printf("0 %x %u %lu\n", scan->next->start, w, scan->length);
\r
1343 strcat(scratch0,"0");
\r
1345 //printf("==================\n");
\r
1346 //printf("w=%u start=%04x next=%04x end=%lu\n", w/80, scan->start, (scan->next->start), end+1);
\r
1347 //printf("==================\n");
\r
1348 strcat(scratch0, "\n");
\r
1351 else {//if(scan->next->start <= scan->start){
\r
1352 scan->next->start=scan->start+0x1000;
\r
1353 strcat(scratch0, AARESET);
\r
1354 strcat(scratch0, "\n");
\r
1355 strcat(scratch0,AAGREEN);
\r
1356 for(w=(end+1);w<=(0x1000/80);w++)
\r
1358 //printf("0 %x %x %u\n", scan->start, w);
\r
1359 strcat(scratch0,"0");
\r
1361 printf("================\n");
\r
1362 printf("w=%x start=%x next=%x end=%u\n", w, scan->start, (scan->next->start), end+1);
\r
1363 printf("================\n");
\r
1367 strcat(scratch0, AARESET);
\r
1368 //strcat(scratch0,"\n");
\r
1369 strcat(scratch,"Seg:");
\r
1370 ultoa (scan->start,str,16);
\r
1371 strcat (scratch,str);
\r
1372 // strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);
\r
1373 strcat (scratch,"\tSize:");
\r
1374 ultoa ((unsigned)scan->length,str,10);
\r
1375 strcat (scratch,str);
\r
1376 // strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);
\r
1377 strcat (scratch,"\tOwner:0x");
\r
1378 owner = (unsigned)scan->useptr;
\r
1379 ultoa (owner,str,16);
\r
1380 strcat (scratch,str);
\r
1381 strcat (scratch,"\n");
\r
1382 write(gvar->handle.debughandle,scratch,strlen(scratch));
\r
1383 write(gvar->handle.debughandle,scratch0,strlen(scratch0));
\r
1384 //fprintf(stdout, "%s", scratch);
\r
1386 scan = scan->next;
\r
1388 //if(color!=6) IN_Ack(gvar);
\r
1391 CA_CloseDebug (gvar);
\r
1395 int dx,dy,odx,ody;
\r
1396 odx = gvar->video.page[0].dx;
\r
1397 ody = gvar->video.page[0].dy;
\r
1399 while(!gvar->in.inst->Keyboard[sc_Escape])
\r
1401 if(gvar->in.inst->Keyboard[sc_UpArrow])
\r
1406 else if(gvar->in.inst->Keyboard[sc_DownArrow])
\r
1408 if(dy<gvar->video.page[0].height-gvar->video.page[0].sh)
\r
1411 if(gvar->in.inst->Keyboard[sc_LeftArrow])
\r
1416 else if(gvar->in.inst->Keyboard[sc_RightArrow])
\r
1418 if(dx<gvar->video.page[0].width-gvar->video.page[0].sw)
\r
1422 modexPanPage(&gvar->video.page[0], dx, dy);
\r
1423 VL_ShowPage(&gvar->video.page[0], 1, 1);
\r
1426 gvar->video.page[0].dx = odx;
\r
1427 gvar->video.page[0].dy = ody;
\r
1430 #ifdef MMSMSCANINFO
\r
1433 unsigned maxq = q;
\r
1435 ScanCode scancode;
\r
1437 word qq, ccolor = 3;
\r
1439 // VL_ClearVideo (8);
\r
1440 for (qq = 0,done = false;!done;)
\r
1442 if(scaninfo[qq].scan->attributes & PURGEBITS)
\r
1444 ccolor = 6; // dark purple = purgable
\r
1445 strcpy(scratch1, AAMAGENTA); // dark purple = purgable
\r
1446 //printf("%s", AAMAGENTA);
\r
1448 ccolor = 2; // medium blue = non purgable
\r
1449 strcpy(scratch1, AABLUE); // medium blue = non purgable
\r
1450 //printf("%s", AABLUE);
\r
1452 if(scaninfo[qq].scan->attributes & LOCKBIT)
\r
1454 ccolor = 1; // red = locked
\r
1455 strcpy(scratch1, AARED); // red = locked
\r
1456 //printf("%s", AARED);
\r
1458 end = scaninfo[qq].scan->length-1;
\r
1459 /*typedef struct mmblockstruct{
\r
1460 word start,length;
\r
1461 unsigned attributes;
\r
1462 memptr *useptr; // pointer to the segment start
\r
1463 struct mmblockstruct far *next;
\r
1465 //modexprint(page, x, y, t, tlsw, color, bgcolor, vidsw, const byte *str);
\r
1466 #define MMSMPRINTMEMINFO modexprint(&(gvar->video.page[0]), xpos, ypos, 1, 0, ccolor, 8, gvar->video.VL_Started, global_temp_status_text); ypos+=8;
\r
1467 if(!gvar->video.VL_Started) clrscr(); else
\r
1469 VL_ShowPage(&gvar->video.page[0], 1, 0);
\r
1470 modexClearRegion(&gvar->video.page[0], 0, 0, gvar->video.page[0].width, gvar->video.page[0].height, 8);
\r
1472 sprintf(global_temp_status_text, "block #%04u", qq); MMSMPRINTMEMINFO
\r
1473 // sprintf(global_temp_status_text, "%Fp", scaninfo[qq].scan->useptr); MMSMPRINTMEMINFO
\r
1474 sprintf(global_temp_status_text, "%04x", (unsigned)scaninfo[qq].scan->useptr); MMSMPRINTMEMINFO
\r
1475 sprintf(global_temp_status_text, "size: %05u", (unsigned)scaninfo[qq].scan->length); MMSMPRINTMEMINFO
\r
1476 if (scaninfo[qq].scan->next && scaninfo[qq].scan->next->start > end+1)
\r
1478 sprintf(global_temp_status_text, "free: %05u", (unsigned)(scaninfo[qq].scan->next->start-scaninfo[qq].scan->start)); MMSMPRINTMEMINFO
\r
1480 if(gvar->video.VL_Started)
\r
1482 y = ypos;//scaninfo[qq].scan->start/width;
\r
1483 x = xpos;//scaninfo[qq].scan->start%width;
\r
1484 VW_Hlin(x,x+end,y,ccolor,gvar);
\r
1485 VL_Plot(x,y,5,gvar);
\r
1489 printf("%s", scratch1);
\r
1490 printf("%s", AAGREY); printf("_");
\r
1491 for(w=(scaninfo[qq].scan->start)/80;w<=end/80;w++)
\r
1493 //strcat(scratch1, "+");
\r
1499 if (scaninfo[qq].scan->next && scaninfo[qq].scan->next->start > end+1) if(!gvar->video.VL_Started)
\r
1501 //strcat(scratch1, AARESET);
\r
1502 printf("%s", AARESET);
\r
1503 //strcat(scratch1,AAGREEN);
\r
1504 printf("%s", AAGREEN);
\r
1505 for(w=(end+1)/80;w<=((scaninfo[qq].scan->next->start-scaninfo[qq].scan->start)/80);w++)
\r
1507 //strcat(scratch1,"0");
\r
1510 }else VW_Hlin(x+end+1,x+(scaninfo[qq].scan->next->start-scaninfo[qq].scan->start),y,3,gvar); // black = free//now green
\r
1513 if(gvar->video.VL_Started)
\r
1515 //if (scan->next && scan->next->start > end+1) free
\r
1517 ypos = 16;//(gvar->video.page[0].sh-(32));//8*4
\r
1521 //printf("%s\n", scratch1);
\r
1522 printf("%s", AARESET);
\r
1525 while (!(scancode = gvar->in.inst->LastScan)){}
\r
1527 IN_ClearKey(scancode);
\r
1530 case sc_LeftArrow:
\r
1534 case sc_RightArrow:
\r
1546 if(gvar->video.VL_Started) IN_Ack(gvar);
\r
1548 gvar->video.BOFS = (byte __far *)temp;
\r
1551 //==========================================================================
\r
1554 =====================
\r
1558 =====================
\r
1561 void MM_DumpData (global_game_variables_t *gvar)
\r
1563 mmblocktype far *scan,far *best;
\r
1564 long lowest,oldlowest;
\r
1569 #ifdef __WATCOMC__
\r
1570 _nfree(gvar->mm.nearheap);
\r
1572 #ifdef __BORLANDC__
\r
1573 free(gvar->mm.nearheap);
\r
1575 #ifdef __BORLANDC__
\r
1576 dumpfile = fopen ("mmdump.16b","w");
\r
1578 #ifdef __WATCOMC__
\r
1579 dumpfile = fopen ("mmdump.16w","w");
\r
1582 printf("MM_DumpData: Couldn't open MMDUMP.16!\n");
\r
1589 oldlowest = lowest;
\r
1592 scan = gvar->mm.mmhead;
\r
1595 owner = (unsigned)scan->useptr;
\r
1597 if (owner && owner<lowest && owner > oldlowest)
\r
1603 scan = scan->next;
\r
1606 if (lowest != 0xffff)
\r
1608 if (best->attributes & PURGEBITS)
\r
1612 if (best->attributes & LOCKBIT)
\r
1616 fprintf (dumpfile,"0x%p (%c%c) = %u\n"
\r
1617 ,(unsigned)lowest,lock,purge,best->length);
\r
1620 } while (lowest != 0xffff);
\r
1623 printf("MMDUMP.16 created.\n");
\r
1626 //==========================================================================
\r
1630 ======================
\r
1634 = Returns the total free space without purging
\r
1636 ======================
\r
1639 dword MM_UnusedMemory (global_game_variables_t *gvar)
\r
1642 mmblocktype far *scan;
\r
1645 scan = gvar->mm.mmhead;
\r
1649 free += scan->next->start - (scan->start + scan->length);
\r
1650 scan = scan->next;
\r
1656 //==========================================================================
\r
1660 ======================
\r
1664 = Returns the total free space with purging
\r
1666 ======================
\r
1669 dword MM_TotalFree (global_game_variables_t *gvar)
\r
1672 mmblocktype far *scan;
\r
1675 scan = gvar->mm.mmhead;
\r
1679 if((scan->attributes&PURGEBITS) && !(scan->attributes&LOCKBIT))
\r
1680 free += scan->length;
\r
1681 free += scan->next->start - (scan->start + scan->length);
\r
1682 scan = scan->next;
\r
1688 //==========================================================================
\r
1691 =====================
\r
1695 =====================
\r
1698 void MM_Report_ (global_game_variables_t *gvar)
\r
1700 printf("========================================\n");
\r
1701 printf(" MM_Report_\n");
\r
1702 printf("========================================\n");
\r
1703 if(MML_CheckForEMS())
\r
1705 printf(" %cLIMEMS %u\n", 0xC9, gvar->pm.emm.EMSPresent);
\r
1706 printf(" %c%cEMM v%x.%x available\n", 0xC7, 0xC4, gvar->pm.emm.EMSVer>>4,gvar->pm.emm.EMSVer&0x0F);
\r
1707 printf(" %c%ctotalEMSpages: %u ", 0xC7, 0xC4, gvar->pm.emm.totalEMSpages); printf("freeEMSpages: %u\n", gvar->pm.emm.freeEMSpages);
\r
1708 printf(" %c%cEMSPageFrame: %04x\n", 0xC7, 0xC4, gvar->pm.emm.EMSPageFrame);
\r
1709 printf(" %c%cEMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.EMSmem);
\r
1711 if(MML_CheckForXMS())
\r
1713 printf(" %cXMS %u\n", 0xC9, gvar->pm.xmm.XMSPresent);
\r
1714 printf(" %c%cXMS v%x.%x available\n", 0xC7, 0xC4, XMSVer>>8,XMSVer&0x0F);
\r
1715 printf(" %c%cXMSDriver: %Fp\n", 0xC7, 0xC4, XMSDriver);
\r
1716 printf(" %c%cXMSHandle: %04x\n", 0xC7, 0xC4, gvar->pm.xmm.XMSHandle);
\r
1717 printf(" %c%cXMSmem: %lu\n", 0xD3, 0xC4, gvar->mmi.XMSmem);
\r
1719 printf(" %cConv. %u\n", 0xC9, gvar->pm.mm.MainPresent); DebugMemory_(gvar, 0);
\r
1720 //printf("mainmem: %lu\n", gvar->mmi.mainmem);
\r
1721 //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
1722 //printf(" UnusedMemory: %lu\n", MM_UnusedMemory(gvar));
\r
1723 printf("nearheap: %lu ", gvar->mmi.nearheap); printf("farheap: %lu\n", gvar->mmi.farheap);
\r
1726 //==========================================================================
\r
1729 =====================
\r
1733 =====================
\r
1736 void MM_EMSerr(byte *stri, byte err)
\r
1738 //Returns a text string describing the error code in EMS.Error.
\r
1742 strcat(stri, "successful");
\r
1745 strcat(stri, "internal error");
\r
1748 strcat(stri, "hardware malfunction");
\r
1751 strcat(stri, "busy .. retry later");
\r
1754 strcat(stri, "invalid handle");
\r
1757 strcat(stri, "undefined function requested by application");
\r
1760 strcat(stri, "no more handles available");
\r
1763 strcat(stri, "error in save or restore of mapping context");
\r
1766 strcat(stri, "insufficient memory pages in system");
\r
1769 strcat(stri, "insufficient memory pages available");
\r
1772 strcat(stri, "zero pages requested");
\r
1775 strcat(stri, "invalid logical page number encountered");
\r
1778 strcat(stri, "invalid physical page number encountered");
\r
1781 strcat(stri, "page-mapping hardware state save area is full");
\r
1784 strcat(stri, "save of mapping context failed");
\r
1787 strcat(stri, "restore of mapping context failed");
\r
1790 strcat(stri, "undefined subfunction");
\r
1793 strcat(stri, "undefined attribute type");
\r
1796 strcat(stri, "feature not supported");
\r
1799 strcat(stri, "successful, but a portion of the source region has been overwritten");
\r
1802 strcat(stri, "length of source or destination region exceeds length of region allocated to either source or destination handle");
\r
1805 strcat(stri, "conventional and expanded memory regions overlap");
\r
1808 strcat(stri, "offset within logical page exceeds size of logical page");
\r
1811 strcat(stri, "region length exceeds 1 MB");
\r
1814 strcat(stri, "source and destination EMS regions have same handle and overlap");
\r
1817 strcat(stri, "memory source or destination type undefined");
\r
1820 strcat(stri, "specified alternate map register or DMA register set not supported");
\r
1823 strcat(stri, "all alternate map register or DMA register sets currently allocated");
\r
1826 strcat(stri, "alternate map register or DMA register sets not supported");
\r
1829 strcat(stri, "undefined or unallocated alternate map register or DMA register set");
\r
1832 strcat(stri, "dedicated DMA channels not supported");
\r
1835 strcat(stri, "specified dedicated DMA channel not supported");
\r
1838 strcat(stri, "no such handle name");
\r
1841 strcat(stri, "a handle found had no name, or duplicate handle name");
\r
1844 strcat(stri, "attempted to wrap around 1M conventional address space");
\r
1847 strcat(stri, "source array corrupted");
\r
1850 strcat(stri, "operating system denied access");
\r
1853 strcat(stri, "undefined error");
\r
1857 //==========================================================================
\r
1860 =====================
\r
1864 =====================
\r
1867 void MM_BombOnError (boolean bomb, global_game_variables_t *gvar)
\r
1869 gvar->mm.bombonerror = bomb;
\r
1873 void MM_GetNewBlock(global_game_variables_t *gvar)
\r
1875 if(!gvar->mm.mmfree)
\r
1876 MML_ClearBlock(gvar);
\r
1877 gvar->mm.mmnew=gvar->mm.mmfree;
\r
1878 gvar->mm.mmfree=gvar->mm.mmfree->next;
\r
1879 if(!(gvar->mm.mmnew=gvar->mm.mmfree))
\r
1881 printf("MM_GETNEWBLOCK: No free blocks!\n");
\r
1884 gvar->mm.mmfree=gvar->mm.mmfree->next;
\r
1887 void MM_FreeBlock(mmblocktype *x, global_game_variables_t *gvar)
\r
1890 x->next=gvar->mm.mmfree;
\r
1891 gvar->mm.mmfree=x;
\r
1895 void xms_call(byte v, global_game_variables_t *gvar)
\r
1897 dword XMSDriver = gvar->pm.xmm.XMSDriver;
\r
1900 call [DWORD PTR XMSDriver]
\r
1904 /*void MM_seguin(void)
\r
1914 void MM_segude(void)
\r
1922 pull data from far and put it into ds var
\r
1929 bp bottem of stack
\r