1 /* Catacomb Apocalypse Source Code
2 * Copyright (C) 1993-2014 Flat Rock Software
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 =============================================================================
24 ID software memory manager
25 --------------------------
27 Primary coder: John Carmack
31 Quit (char *error) function
36 MM_SizePtr to change the size of a given pointer
38 Multiple purge levels utilized
40 EMS / XMS unmanaged routines
42 =============================================================================
46 Open Watcom port by sparky4
49 #include "src/lib/16_mm.h"
50 #include "src/lib/16_ca.h"
57 =============================================================================
61 =============================================================================
64 void (* beforesort) (void);
65 void (* aftersort) (void);
66 void (* XMSaddr) (void); // far pointer to XMS driver
69 =============================================================================
73 =============================================================================
76 static char *ParmStringsexmm[] = {"noems","noxms",""};
79 ======================
83 = Routine from p36 of Extending DOS
85 =======================
88 boolean MML_CheckForEMS(void)
91 static char emmname[] = "EMMXXXX0"; //fix by andrius4669
93 mov dx,OFFSET emmname //fix by andrius4669
95 int 0x21 // try to open EMMXXXX0 device
101 int 0x21 // get device info
109 int 0x21 // get status
115 int 0x21 // close handle
145 ======================
149 =======================
152 byte MML_SetupEMS(global_game_variables_t *gvar)
156 boolean errorflag=false;
158 unsigned int EMSVer = 0;
160 unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSpagesmapped,EMSHandle;
161 totalEMSpages = freeEMSpages = EMSPageFrame = EMSpagesmapped = 0;
165 int EMS_INT // make sure EMS hardware is present
167 //mov [EMS_status],ah
174 mov [EMSVer],ax // set EMSVer
175 cmp al,0x32 // only work on ems 3.2 or greater
179 int EMS_INT // find the page frame address
182 mov [EMSPageFrame],bx
185 int EMS_INT // find out how much EMS is there
188 mov [totalEMSpages],dx
189 mov [freeEMSpages],bx
191 jz noEMS // no EMS at all to allocate
195 cmp bx,[freeEMSpages]
197 mov bx,[freeEMSpages]
207 jle getpages // there is only 1,2,3,or 4 pages
208 mov bx,4 // we can't use more than 4 pages
216 mov [EMSpagesmapped],bx
217 mov ah,EMS_ALLOCPAGES // allocate up to 64k of EMS
243 strcpy(str,"MM_SetupEMS: EMS error ");
248 gvar->mm.totalEMSpages=totalEMSpages;
249 gvar->mm.freeEMSpages=freeEMSpages;
250 gvar->mm.EMSPageFrame=EMSPageFrame;
251 gvar->mm.EMSpagesmapped=EMSpagesmapped;
252 gvar->mm.EMSHandle=EMSHandle;
253 gvar->mm.EMSVer=EMSVer;
259 ======================
263 =======================
266 void MML_ShutdownEMS(global_game_variables_t *gvar)
268 boolean errorflag=false;
269 unsigned EMSHandle=gvar->mm.EMSHandle;
288 Quit("MML_ShutdownEMS: Error freeing EMS!\n"); //++++ add something
296 = Maps the 64k of EMS used by memory manager into the page frame
297 = for general use. This only needs to be called if you are keeping
298 = other things in EMS.
303 byte MM_MapEMS(global_game_variables_t *gvar)
308 boolean errorflag=false;
310 EMSHandle=gvar->mm.EMSHandle;
312 for (i=0;i<4/*MAPPAGES*/;i++)
316 mov bx,[i] // logical page
317 mov al,bl // physical page
318 mov dx,[EMSHandle] // handle
341 strcpy(str,"MM_MapEMS: EMS error ");
347 gvar->mmi.EMSmem = (i)*0x4000lu;
348 //printf(" gvar->mmi.EMSmem=%lu\n", gvar->mmi.EMSmem);
352 byte MM_MapXEMS(global_game_variables_t *gvar)
354 //SUB EMS.MapXPages (PhysicalStart, LogicalStart, NumPages, Handle)
356 //Maps up to 4 logical EMS pages to physical pages in the page frame, where:
357 //PhysicalStart = Physical page first logical page is mapped to
358 //LogicalStart = First logical page to map
359 //NumPages = Number of pages to map (1 to 4)
360 //Handle = EMS handle logical pages are allocated to
362 /*//Create a buffer containing the page information
363 // FOR x = 0 TO NumPages - 1
364 // MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x)
367 // Regs.ax = 0x5000 //Map the pages in the buffer
368 // Regs.cx = NumPages //to the pageframe
370 // Regs.ds = VARSEG(MapInfo$)
371 // Regs.si = SADD(MapInfo$)
372 // InterruptX 0x67, Regs, Regs
373 // EMS.Error = (Regs.ax AND 0xFF00&) \ 0x100 //Store the status code
379 boolean errorflag=false;
381 EMSHandle=gvar->mm.EMSHandle;
383 if(gvar->mm.EMSVer<0x40)
386 for (i=0;i<MAPPAGES;i++)
390 mov cx,[i] // logical page
391 mov al,bl // physical page
392 mov dx,[EMSHandle] // handle
415 //strcpy(str,"MM_MapXEMS: EMS error 0x");
416 strcpy(str,"MM_MapXEMS: EMS error ");
420 //printf("%s%x\n",str, err);
421 //printf("FACK! %x\n", err);
425 gvar->mmi.EMSmem = (i)*0x4000lu;
429 //==========================================================================
432 ======================
436 = Check for XMM driver
438 =======================
441 boolean MML_CheckForXMS(global_game_variables_t *gvar)
443 boolean errorflag=false;
444 gvar->mm.numUMBs = 0;
448 int 0x2f // query status of installed diver
459 if(errorflag==true) return false;
465 ======================
469 = Try to allocate all upper memory block
471 =======================
474 void MML_SetupXMS(global_game_variables_t *gvar)
482 mov [WORD PTR XMSaddr],bx
483 mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver
488 mov dx,0xffff // try for largest block possible
489 //mov ax,dx // Set available Kbytes.
490 call [DWORD PTR XMSaddr]
494 cmp bl,0xb0 // error: smaller UMB is available
498 call [DWORD PTR XMSaddr] // DX holds largest available UMB
500 jz done // another error...
517 // printf("base=%u ", base); printf("size=%u\n", size);
518 MML_UseSpace(base,size, gvar);
519 gvar->mmi.XMSmem += size*16;
520 gvar->mm.UMBbase[gvar->mm.numUMBs] = base;
522 if(gvar->mm.numUMBs < MAXUMBS)
528 ======================
532 ======================
535 void MML_ShutdownXMS(global_game_variables_t *gvar)
540 for (i=0;i<gvar->mm.numUMBs;i++)
542 base = gvar->mm.UMBbase[i];
546 call [DWORD PTR XMSaddr]
551 //==========================================================================
554 ======================
558 = Marks a range of paragraphs as usable by the memory manager
559 = This is used to mark space for the near heap, far heap, ems page frame,
560 = and upper memory blocks
562 ======================
565 /*void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
567 //huge mmblocktype huge *scan,huge *last;
573 scan = last = gvar->mm.mmhead;
574 gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory
577 // search for the block that contains the range of segments
579 while(scan->start+scan->length < segstart)
586 // take the given range out of the block
588 oldend = scan->start + scan->length;
589 extra = oldend - (segstart+seglength);
594 if(segm>1)/// || extra>=0x10000lu)
599 //MML_UseSpace(segstart, seglength, gvar);
601 printf("MML_UseSpace: Segment spans two blocks!\n");
603 printf("segm=%u ", segm);
604 printf("ex=%lu ", extra);
605 printf("old=%u ", oldend);
606 printf("start+seglen=%lu\n", segstart+seglength);
607 printf("segsta=%x ", segstart);
608 printf("len=%lu ", scan->length);
609 printf("seglen=%lu ", seglength);
610 printf("segmlen=%lu\n", segmlen);
612 //++++todo: linked list of segment!
613 if(segstart == scan->start)
615 last->next = scan->next; // unlink block
620 scan->length = segstart-scan->start; // shorten block
625 gvar->mm.mmnew->useptr = NULL;
627 gvar->mm.mmnew->next = scan->next;
628 scan->next = gvar->mm.mmnew;
629 gvar->mm.mmnew->start = segstart+seglength;
630 gvar->mm.mmnew->length = extra;
631 gvar->mm.mmnew->attributes = LOCKBIT;
632 }//else if(segm>0) goto segu;
635 void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
637 mmblocktype far *scan,far *last;
642 scan = last = gvar->mm.mmhead;
643 gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory
646 // search for the block that contains the range of segments
648 while (scan->start+scan->length < segstart)
655 // find out how many blocks it spans!
657 /*for(;seglength>=0x10000;seglength-=0xFFFF)
659 //printf(" seglen=%lu\n", segmlen);
664 // take the given range out of the block
666 oldend = scan->start + scan->length;
667 extra = oldend - (segstart+((unsigned)seglength));
670 printf("========================================\n");
671 printf("start=%x ", scan->start);
672 printf("old=%u ", oldend);
673 printf("start+seglen=%lu\n", segstart+seglength);
674 printf("segsta=%x ", segstart);
675 printf("len=%lu ", scan->length);
676 printf("seglen=%lu ", seglength);
678 printf("MML_UseSpace: Segment spans two blocks! %d\n", extra);
679 printf("========================================\n");
683 if (segstart == scan->start)
685 last->next = scan->next; // unlink block
690 scan->length = segstart-scan->start; // shorten block
695 gvar->mm.mmnew->useptr = NULL;
697 gvar->mm.mmnew->next = scan->next;
698 scan->next = gvar->mm.mmnew;
699 gvar->mm.mmnew->start = segstart+seglength;
700 gvar->mm.mmnew->length = extra;
701 gvar->mm.mmnew->attributes = LOCKBIT;
706 //==========================================================================
713 = We are out of blocks, so free a purgable block
718 void MML_ClearBlock(global_game_variables_t *gvar)
720 //huge mmblocktype huge *scan,huge *last;
721 mmblocktype far *scan,far *last;
723 scan = gvar->mm.mmhead->next;
727 if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS))
729 MM_FreePtr(scan->useptr, gvar);
735 printf("MM_ClearBlock: No purgable blocks!\n");
739 //==========================================================================
746 = Grabs all space from turbo with malloc/farmalloc
747 = Allocates bufferseg misc buffer
752 void MM_Startup(global_game_variables_t *gvar)
755 //dword length,seglength;
756 dword length; word seglength;
757 //huge void huge *start;
759 word segstart;//,endfree;
762 if(gvar->mm.mmstarted)
765 gvar->mm.mmstarted = true;
766 gvar->mm.bombonerror = true;
769 // set up the linked list (everything in the free list;
771 gvar->mm.mmhead = NULL;
772 gvar->mm.mmfree = &(gvar->mm.mmblocks[0]);
773 for(i=0;i<MAXBLOCKS-1;i++)
775 gvar->mm.mmblocks[i].next = &(gvar->mm.mmblocks[i+1]);
777 gvar->mm.mmblocks[i].next = NULL;
780 // locked block of all memory until we punch out free space
783 gvar->mm.mmhead = gvar->mm.mmnew; // this will allways be the first node
784 gvar->mm.mmnew->start = 0;
785 gvar->mm.mmnew->length = 0xffff;
786 gvar->mm.mmnew->attributes = LOCKBIT;
787 gvar->mm.mmnew->next = NULL;
788 //gvar->mm.mmnew->useptr = peeonself;
789 gvar->mm.mmrover = gvar->mm.mmhead;
791 //printf(" %x\n", peeonself);
792 //printf(" %x\n", *peeonself);
794 // get all available near conventional memory segments
798 length=(dword)_memavl();//(dword)GetFreeSize();
799 //huge start = (void huge *)(gvar->mm.nearheap = _nmalloc(length));
800 start = (void far *)(gvar->mm.nearheap = _nmalloc(length));
804 //huge start = (void huge *)(gvar->mm.nearheap = malloc(length));
805 start = (void far *)(gvar->mm.nearheap = malloc(length));
807 length -= 16-(FP_OFF(start)&15);
808 length -= SAVENEARHEAP;
809 seglength = length / 16; // now in paragraphs
810 segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
811 MML_UseSpace(segstart,seglength, gvar);
812 gvar->mmi.nearheap = length;
813 //printf("start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, seglength, length);
816 // get all available far conventional memory segments
818 //printf("_FARCORELEFT %lu\n", _FCORELEFT);
823 printf("farcoreleft() %lu\n", farcoreleft());
824 printf("(farcoreleft()+32)-_FCORELEFT %d\n", (sword)((farcoreleft()+32)-_FCORELEFT));
826 length=_FCORELEFT;//_fcoreleft();//(dword)GetFarFreeSize();//0xffffUL*4UL;
827 start = gvar->mm.farheap = _fmalloc(length);
828 //start = gvar->mm.farheap = halloc(length, 1);
829 length -= 16-(FP_OFF(start)&15);
830 length -= SAVEFARHEAP;
831 seglength = length / 16; // now in paragraphs
832 segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
833 MML_UseSpace(segstart,seglength, gvar);
834 gvar->mmi.farheap = length;
835 //printf("start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, seglength, length);
837 gvar->mmi.mainmem = gvar->mmi.nearheap + gvar->mmi.farheap;
842 // detect EMS and allocate up to 64K at page frame
844 gvar->mmi.EMSmem = 0;
845 //goto emsskip; //0000
862 ,ParmStringsexmm) == 0)
863 goto emsskip; // param NOEMS
865 if(MML_CheckForEMS())
867 MML_SetupEMS(gvar); // allocate space
868 //TODO: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT!
869 MML_UseSpace(gvar->mm.EMSPageFrame,(MAPPAGES)*0x4000lu, gvar);
870 //if(gvar->pm.emm.EMSVer<0x40)
871 MM_MapEMS(gvar); // map in used pages
873 //MM_MapXEMS(gvar); // map in used pages
877 // detect XMS and get upper memory blocks
880 gvar->mmi.XMSmem = 0;
898 ,ParmStringsexmm) == 0)
899 goto xmsskip; // param NOXMS
901 if(MML_CheckForXMS(gvar))
903 MML_SetupXMS(gvar); // allocate as many UMBs as possible
909 // allocate the misc buffer
912 gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block
914 MM_GetPtr(&(gvar->mm.bufferseg),BUFFERSIZE, gvar);
917 //==========================================================================
924 = Frees all conventional, EMS, and XMS allocated
929 void MM_Shutdown(global_game_variables_t *gvar)
931 if(!(gvar->mm.mmstarted))
934 _ffree(gvar->mm.farheap);// printf(" far freed\n");
936 _nfree(gvar->mm.nearheap);// printf(" near freed\n");
939 free(gvar->mm.nearheap);// printf(" near freed\n");
944 if(MML_CheckForEMS()){ MML_ShutdownEMS(gvar); }//printf(" EMS freed\n"); }
945 if(MML_CheckForXMS(gvar)){ MML_ShutdownXMS(gvar); }//printf(" XMS freed\n"); }
951 //==========================================================================
958 = Allocates an unlocked, unpurgable block
963 void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
965 //huge mmblocktype huge *scan,huge *lastscan,huge *endscan,huge *purge,huge *next;
966 mmblocktype far *scan,far *lastscan,far *endscan,far *purge,far *next;
968 unsigned needed,startseg;
970 needed = (size+15)/16; // convert size from bytes to paragraphs
972 GETNEWBLOCK; // fill in start and next after a spot is found
973 gvar->mm.mmnew->length = needed;
974 gvar->mm.mmnew->useptr = baseptr;
975 //if(gvar->mm.mmnew->useptr==NULL){
977 printf("MM_GetPtr\n");
979 printf(" baseptr=%Fp ", baseptr); printf("useptr=%Fp\n", gvar->mm.mmnew->useptr);
980 printf(" *baseptr=%Fp ", *baseptr); printf("*useptr=%Fp\n", *(gvar->mm.mmnew->useptr));
981 printf(" &baseptr=%Fp ", &baseptr); printf("&useptr=%Fp\n", &(gvar->mm.mmnew->useptr));
984 gvar->mm.mmnew->attributes = BASEATTRIBUTES;
987 for (search = 0; search<3; search++)
990 // first search: try to allocate right after the rover, then on up
991 // second search: search from the head pointer up to the rover
992 // third search: compress memory, then scan from start
993 if (search == 1 && gvar->mm.mmrover == gvar->mm.mmhead)
999 lastscan = gvar->mm.mmrover;
1000 scan = gvar->mm.mmrover->next;
1004 lastscan = gvar->mm.mmhead;
1005 scan = gvar->mm.mmhead->next;
1006 endscan = gvar->mm.mmrover;
1010 lastscan = gvar->mm.mmhead;
1011 scan = gvar->mm.mmhead->next;
1016 startseg = lastscan->start + lastscan->length;
1018 while (scan != endscan)
1020 if (scan->start - startseg >= needed)
1023 // got enough space between the end of lastscan and
1024 // the start of scan, so throw out anything in the middle
1025 // and allocate the new block
1027 purge = lastscan->next;
1028 lastscan->next = gvar->mm.mmnew;
1029 gvar->mm.mmnew->start = *(unsigned *)baseptr = startseg;
1030 gvar->mm.mmnew->next = scan;
1031 while ( purge != scan)
1032 { // free the purgable block
1035 purge = next; // purge another if not at scan
1037 gvar->mm.mmrover = gvar->mm.mmnew;
1038 return; // good allocation!
1042 // if this block is purge level zero or locked, skip past it
1044 if ( (scan->attributes & LOCKBIT)
1045 || !(scan->attributes & PURGEBITS) )
1048 startseg = lastscan->start + lastscan->length;
1052 scan=scan->next; // look at next line
1056 if (gvar->mm.bombonerror)
1061 printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap));
1062 printf("for stability reasons the program will shut down! wwww\n");
1067 gvar->mm.mmerror = true;
1070 //==========================================================================
1073 ====================
1077 = Allocates an unlocked, unpurgable block
1079 ====================
1082 void MM_FreePtr(memptr *baseptr, global_game_variables_t *gvar)
1084 //huge mmblocktype huge *scan,huge *last;
1085 mmblocktype far *scan,far *last;
1087 last = gvar->mm.mmhead;
1090 if(baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block
1091 gvar->mm.mmrover = gvar->mm.mmhead;
1093 while(scan->useptr != baseptr && scan)
1101 printf("MM_FreePtr: Block not found!\n");
1105 last->next = scan->next;
1109 //==========================================================================
1112 =====================
1116 = Sets the purge level for a block (locked blocks cannot be made purgable)
1118 =====================
1122 void MM_SetPurge(memptr *baseptr, int purge, global_game_variables_t *gvar)
1124 //huge mmblocktype huge *start;
1125 mmblocktype far *start;
1127 start = gvar->mm.mmrover;
1131 if(gvar->mm.mmrover->useptr == baseptr)
1134 gvar->mm.mmrover = gvar->mm.mmrover->next;
1136 if(!gvar->mm.mmrover)
1137 gvar->mm.mmrover = gvar->mm.mmhead;
1138 else if(gvar->mm.mmrover == start)
1140 Quit("MM_SetPurge: Block not found!");
1146 gvar->mm.mmrover->attributes &= ~PURGEBITS;
1147 gvar->mm.mmrover->attributes |= purge;
1150 //==========================================================================
1153 =====================
1157 = Locks / unlocks the block
1159 =====================
1162 void MM_SetLock(memptr *baseptr, boolean locked, global_game_variables_t *gvar)
1164 //huge mmblocktype huge *start;
1165 mmblocktype far *start;
1167 start = gvar->mm.mmrover;
1171 if(gvar->mm.mmrover->useptr == baseptr)
1174 gvar->mm.mmrover = gvar->mm.mmrover->next;
1176 if(!gvar->mm.mmrover)
1177 gvar->mm.mmrover = gvar->mm.mmhead;
1178 else if(gvar->mm.mmrover == start)
1180 Quit("MM_SetLock: Block not found!");
1186 gvar->mm.mmrover->attributes &= ~LOCKBIT;
1187 gvar->mm.mmrover->attributes |= locked*LOCKBIT;
1190 //==========================================================================
1193 =====================
1197 = Throws out all purgable stuff and compresses movable blocks
1199 =====================
1202 void MM_SortMem(global_game_variables_t *gvar)
1204 //huge mmblocktype huge *scan,huge *last,huge *next;
1205 mmblocktype far *scan,far *last,far *next;
1206 unsigned start,length,source,dest,oldborder;
1210 // lock down a currently playing sound
1212 /*++++ playing = SD_SoundPlaying ();
1218 playing += STARTPCSOUNDS;
1221 playing += STARTADLIBSOUNDS;
1224 MM_SetLock(&(memptr)audiosegs[playing],true);
1229 // oldborder = bordercolor;
1230 // VW_ColorBorder (15);
1235 scan = gvar->mm.mmhead;
1237 last = NULL; // shut up compiler warning
1241 if(scan->attributes & LOCKBIT)
1244 // block is locked, so try to pile later blocks right after it
1246 start = scan->start + scan->length;
1250 if(scan->attributes & PURGEBITS)
1253 // throw out the purgable block
1257 //MM_FreeBlock(scan, gvar);
1265 // push the non purgable block on top of the last moved block
1267 if(scan->start != start)
1269 length = scan->length;
1270 source = scan->start;
1272 while(length > 0xf00)
1274 movedata(source,0,dest,0,0xf00*16);
1279 movedata(source,0,dest,0,length*16);
1281 scan->start = start;
1282 *(unsigned *)scan->useptr = start;
1284 start = scan->start + scan->length;
1289 scan = scan->next; // go to next block
1292 gvar->mm.mmrover = gvar->mm.mmhead;
1297 // VW_ColorBorder (oldborder);
1300 MM_SetLock(&(memptr)audiosegs[playing],false);*/
1303 //==========================================================================
1306 =====================
1310 =====================
1313 void MM_ShowMemory(global_game_variables_t *gvar)
1315 //huge mmblocktype huge *scan;
1316 mmblocktype far *scan;
1322 byte scratch[160],scratch0[4096],scratch1[160],str[16];
1324 //**** VW_SetDefaultColors();
1325 //**** VW_SetLineWidth(40);
1326 //++++mh temp = bufferofs;
1327 //++++mh bufferofs = 0;
1328 //**** VW_SetScreen (0,0);
1329 scan = gvar->mm.mmhead;
1332 CA_OpenDebug (gvar);
1336 strcpy(scratch, AARESET);
1337 if(scan->attributes & PURGEBITS)
1338 strcpy(scratch0, AAMAGENTA); // dark purple = purgable
1340 strcpy(scratch0, AABLUE); // medium blue = non purgable
1341 if(scan->attributes & LOCKBIT)
1342 strcpy(scratch0, AARED); // red = locked
1343 if(scan->start<=end)
1345 printf("\nend==%d\n\n", end);
1346 strcat(scratch, "MM_ShowMemory: Memory block order currupted!\n");
1347 strcat(scratch, "End's Size: ");
1349 strcat (scratch,str);
1350 strcat(scratch, "\nscan->start's Size: ");
1351 ultoa (scan->start,str,10);
1352 strcat (scratch,str);
1353 write(gvar->handle.debughandle,scratch,strlen(scratch));
1354 //modexprint(&page, chx, chy, 1, 0, 24, "\nMM_ShowMemory: Memory block order currupted!\n");
1357 end = scan->start+(scan->length)-1;
1358 //++++ chy = scan->start/320;
1359 //++++ chx = scan->start%320;
1360 //modexhlin(page, scan->start, (unsigned)end, chy, color);
1361 //for(chx=scan->start;chx+4>=(word)end;chx+=4)
1363 //++++ modexClearRegion(page, chx, chy, 4, 4, color);
1365 //++++ VW_Hlin(scan->start,(unsigned)end,0,color);
1366 for(w=(scan->start)/80;w<=end/80;w++)
1368 //printf("+ %u %lu\n", w, scan->length);
1369 strcat(scratch0, "+");
1371 //++==++==optional strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_");
1372 //++++ VW_Plot(scan->start,0,15);
1373 //++++ modexClearRegion(page, chx, chy, 4, 4, 15);
1374 //++++ VW_Hlin(end+1,scan->next->start,0,0); // black = free
1376 //wwww=(dword)(scan->next->start)-(dword)scan->start;
1377 //wwww=(dword)scan->start+(dword)(scan->next->start);
1378 if (scan->next && scan->next->start >= end+1)
1380 strcat(scratch0, AARESET);
1381 //++==++==optional strcat(scratch0, "\n");
1382 strcat(scratch0,AAGREEN);
1383 for(w=(end+1)/80;w<=((scan->next->start-scan->start)/80);w++)
1384 //for(w=(wwww)/80;w<=((end+1)/80);w++)
1385 //for(w=(end+1)/80;w<=((wwww)/80);w++)
1387 //printf("0 %x %u %lu\n", scan->next->start, w, scan->length);
1388 strcat(scratch0,"0");
1390 //printf("==================\n");
1391 //printf("w=%u wwww=%lu start=%04x next=%04x end=%lu\n", w/80, wwww/80, scan->start, (scan->next->start), end+1);
1392 //printf("==================\n");
1393 strcat(scratch0, "\n");
1395 }/*else {//if(scan->next->start <= scan->start){
1396 scan->next->start=scan->start+0x1000;
1397 wwww=(dword)(scan->next->start)-(dword)scan->start;
1398 strcat(scratch0, AARESET);
1399 strcat(scratch0, "\n");
1400 strcat(scratch0,AAGREEN);
1401 for(w=(end+1);w<=(0x1000/80);w++)
1403 //printf("0 %x %x %u\n", scan->start, w);
1404 strcat(scratch0,"0");
1406 printf("================\n");
1407 printf("w=%x start=%x next=%x end=%u %lu\n", w, scan->start, (scan->next->start), end+1, wwww);
1408 printf("================\n");
1411 strcat(scratch0, AARESET);
1412 //strcat(scratch0,"\n");
1413 //for(chx=scan->next->start;chx+4>=(word)end+1;chx+=4)
1415 // chx+=scan->next->start;
1416 // modexClearRegion(page, chx, chy, 4, 4, 2);
1418 //modexhlin(page, end+1,scan->next->start, chy, 0);
1419 /* y = scan->start/320;
1420 x = scan->start%320;
1421 VW_Hlin(x,x+end,y,color);
1423 //++++ VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,0); // black = free
1424 strcat(scratch,"Seg:");
1425 ultoa (scan->start,str,16);
1426 strcat (scratch,str);
1427 strcat (scratch,"\tSize:");
1428 ultoa ((unsigned)scan->length,str,10);
1429 strcat (scratch,str);
1430 strcat (scratch,"\tOwner:0x");
1431 owner = (unsigned)scan->useptr;
1432 ultoa (owner,str,16);
1433 strcat (scratch,str);
1434 strcat (scratch,"\n");
1435 write(gvar->handle.debughandle,scratch,strlen(scratch));
1436 write(gvar->handle.debughandle,scratch0,strlen(scratch0));
1437 //modexprint(page, chx, chy, 1, 0, 24, &scratch);
1439 //fprintf(stdout, "%s", scratch);
1443 /*strcpy(scratch1, AARESET);
1444 strcat(scratch1, "========================================\n");
1445 strcat(scratch1, "near= ");
1446 ultoa (*(gvar->mm.nearheap),str,10);
1447 strcat (scratch1,str);
1448 strcat(scratch1, " far= ");
1449 ultoa (*(gvar->mm.farheap),str,10);
1450 strcat (scratch1,str);
1451 strcat(scratch1, "\n");
1452 //strcat(scratch1, "&near= %Fp ", &(gvar->mm.nearheap));
1453 //strcat(scratch1, "&far= %Fp", &(gvar->mm.farheap));
1454 //strcat(scratch1, "\n");
1455 strcat(scratch1, "========================================\n");
1456 write(gvar->handle.debughandle,scratch1,strlen(scratch1));*/
1459 CA_CloseDebug (gvar);
1462 //**** VW_SetLineWidth(64);
1463 //++++mh bufferofs = temp;
1466 //==========================================================================
1469 =====================
1473 =====================
1476 void MM_DumpData(global_game_variables_t *gvar)
1478 //huge mmblocktype huge *scan,huge *best;
1479 mmblocktype far *scan,far *best;
1480 long lowest,oldlowest;
1485 free(gvar->mm.nearheap);
1487 dumpfile = fopen ("mmdump.16b","w");
1490 dumpfile = fopen ("mmdump.16w","w");
1493 printf("MM_DumpData: Couldn't open MMDUMP.16!\n");
1503 scan = gvar->mm.mmhead;
1506 owner = (unsigned)scan->useptr;
1508 if (owner && owner<lowest && owner > oldlowest)
1517 if (lowest != 0xffff)
1519 if (best->attributes & PURGEBITS)
1523 if (best->attributes & LOCKBIT)
1527 fprintf (dumpfile,"0x%p (%c%c) = %u\n"
1528 ,(unsigned)lowest,lock,purge,best->length);
1531 } while (lowest != 0xffff);
1534 printf("MMDUMP.16 created.\n");
1537 //==========================================================================
1541 ======================
1545 = Returns the total free space without purging
1547 ======================
1550 dword MM_UnusedMemory(global_game_variables_t *gvar)
1553 //huge mmblocktype huge *scan;
1554 mmblocktype far *scan;
1557 scan = gvar->mm.mmhead;
1561 free += scan->next->start - (scan->start + scan->length);
1569 //==========================================================================
1573 ======================
1577 = Returns the total free space with purging
1579 ======================
1582 dword MM_TotalFree(global_game_variables_t *gvar)
1585 //huge mmblocktype huge *scan;
1586 mmblocktype far *scan;
1589 scan = gvar->mm.mmhead;
1593 if((scan->attributes&PURGEBITS) && !(scan->attributes&LOCKBIT))
1594 free += scan->length;
1595 free += scan->next->start - (scan->start + scan->length);
1603 //==========================================================================
1606 =====================
1610 =====================
1613 void MM_Report_(global_game_variables_t *gvar)
1615 printf("========================================\n");
1616 printf(" MM_Report\n");
1617 printf("========================================\n");
1618 if(MML_CheckForEMS())
1620 printf(" LIMEMS\n");
1621 printf(" EMM v%x.%x available\n", gvar->pm.emm.EMSVer>>4,gvar->pm.emm.EMSVer&0x0F);
1622 printf(" totalEMSpages: %u ", gvar->pm.emm.totalEMSpages); printf("freeEMSpages: %u\n", gvar->pm.emm.freeEMSpages);
1623 printf(" EMSPageFrame: %x\n", gvar->pm.emm.EMSPageFrame);
1625 if(MML_CheckForXMS(gvar))
1628 printf(" XMSaddr: %X\n", *XMSaddr);
1630 printf("near: %lu ", gvar->mmi.nearheap); printf("far: %lu\n", gvar->mmi.farheap); if(MML_CheckForEMS())
1631 printf("EMSmem: %lu ", gvar->pm.emm.EMSAvail/*gvar->mmi.EMSmem*/); if(MML_CheckForXMS(gvar)) printf("XMSmem: %lu", gvar->mmi.XMSmem); printf("\n");
1632 //printf("mainmem: %lu\n", gvar->mmi.mainmem);
1633 printf("Total convmem: %lu ", gvar->mmi.mainmem); printf("TotalFree: %lu ", MM_TotalFree(gvar)); printf("TotalUsed: %lu\n", gvar->mmi.mainmem+gvar->mmi.EMSmem+gvar->mmi.XMSmem+gvar->mmi.XMSmem);
1634 printf(" UnusedMemory: %lu\n", MM_UnusedMemory(gvar));
1637 //==========================================================================
1640 =====================
1644 =====================
1647 void MM_EMSerr(byte *stri, byte err)
1649 //Returns a text string describing the error code in EMS.Error.
1653 strcat(stri, "successful");
1656 strcat(stri, "internal error");
1659 strcat(stri, "hardware malfunction");
1662 strcat(stri, "busy .. retry later");
1665 strcat(stri, "invalid handle");
1668 strcat(stri, "undefined function requested by application");
1671 strcat(stri, "no more handles available");
1674 strcat(stri, "error in save or restore of mapping context");
1677 strcat(stri, "insufficient memory pages in system");
1680 strcat(stri, "insufficient memory pages available");
1683 strcat(stri, "zero pages requested");
1686 strcat(stri, "invalid logical page number encountered");
1689 strcat(stri, "invalid physical page number encountered");
1692 strcat(stri, "page-mapping hardware state save area is full");
1695 strcat(stri, "save of mapping context failed");
1698 strcat(stri, "restore of mapping context failed");
1701 strcat(stri, "undefined subfunction");
1704 strcat(stri, "undefined attribute type");
1707 strcat(stri, "feature not supported");
1710 strcat(stri, "successful, but a portion of the source region has been overwritten");
1713 strcat(stri, "length of source or destination region exceeds length of region allocated to either source or destination handle");
1716 strcat(stri, "conventional and expanded memory regions overlap");
1719 strcat(stri, "offset within logical page exceeds size of logical page");
1722 strcat(stri, "region length exceeds 1 MB");
1725 strcat(stri, "source and destination EMS regions have same handle and overlap");
1728 strcat(stri, "memory source or destination type undefined");
1731 strcat(stri, "specified alternate map register or DMA register set not supported");
1734 strcat(stri, "all alternate map register or DMA register sets currently allocated");
1737 strcat(stri, "alternate map register or DMA register sets not supported");
1740 strcat(stri, "undefined or unallocated alternate map register or DMA register set");
1743 strcat(stri, "dedicated DMA channels not supported");
1746 strcat(stri, "specified dedicated DMA channel not supported");
1749 strcat(stri, "no such handle name");
1752 strcat(stri, "a handle found had no name, or duplicate handle name");
1755 strcat(stri, "attempted to wrap around 1M conventional address space");
1758 strcat(stri, "source array corrupted");
1761 strcat(stri, "operating system denied access");
1764 strcat(stri, "undefined error");
1768 //==========================================================================
1771 =====================
1775 =====================
1778 void MM_BombOnError(boolean bomb, global_game_variables_t *gvar)
1780 gvar->mm.bombonerror = bomb;
1783 /*void MM_GetNewBlock(global_game_variables_t *gvar)
1785 if(!gvar->mm.mmfree)
1786 MML_ClearBlock(gvar);
1787 gvar->mm.mmnew=gvar->mm.mmfree;
1788 gvar->mm.mmfree=gvar->mm.mmfree->next;
1789 if(!(gvar->mm.mmnew=gvar->mm.mmfree))
1791 printf("MM_GETNEWBLOCK: No free blocks!\n");
1794 gvar->mm.mmfree=gvar->mm.mmfree->next;
1797 void MM_FreeBlock(mmblocktype *x, global_game_variables_t *gvar)
1800 x->next=gvar->mm.mmfree;
1804 /*void MM_seguin(void)
1814 void MM_segude(void)
1822 pull data from far and put it into ds var