-/* Catacomb Apocalypse Source Code
- * Copyright (C) 1993-2014 Flat Rock Software
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-// NEWMM.C
-
-/*
-=============================================================================
-
- ID software memory manager
- --------------------------
-
-Primary coder: John Carmack
-
-RELIES ON
----------
-Quit (global_game_variables_t *gvar, char *error) function
-
-
-WORK TO DO
-----------
-MM_SizePtr to change the size of a given pointer
-
-Multiple purge levels utilized
-
-EMS / XMS unmanaged routines
-
-=============================================================================
-*/
-/*
-
-Open Watcom port by sparky4
-
-*/
-#include "src/lib/16_mm.h"
-#include "src/lib/16_ca.h"
-#include <malloc.h>
-#pragma hdrstop
-
-#pragma warn -pro
-#pragma warn -use
-
-/*
-=============================================================================
-
- GLOBAL VARIABLES
-
-=============================================================================
-*/
-
-void (* beforesort) (void);
-void (* aftersort) (void);
-void (* XMSaddr) (void); // far pointer to XMS driver
-
-/*
-=============================================================================
-
- LOCAL VARIABLES
-
-=============================================================================
-*/
-#ifndef __16_PM__
-static char *ParmStringsexmm[] = {"noems","noxms",""};
-#endif
-/*
-======================
-=
-= MML_CheckForEMS
-=
-= Routine from p36 of Extending DOS
-=
-=======================
-*/
-
-boolean MML_CheckForEMS(void)
-{
- boolean emmcfems = false;
- word EMSPageFrame = 0;
- byte err=0, str[64];
- static char emmname[] = "EMMXXXX0"; //fix by andrius4669
- __asm {
- mov dx,OFFSET emmname //fix by andrius4669
- mov ax,0x3d00
- int EMM_INT // try to open EMMXXXX0 device
- jc error
-
- mov bx,ax
- mov ax,0x4400
-
- int EMM_INT // get device info
- jc error
-
- and dx,0x80
- jz error
-
- mov ax,0x4407
-
- int EMM_INT // get status
- jc error
- or al,al
- jz error
-
- mov ah,0x3e
- int EMM_INT // close handle
- jc error
-
- //
- // pageframe check
- //
- mov ah,EMS_GETFRAME
- int EMS_INT // find the page frame address
- or ah,ah
- jnz error
- mov [EMSPageFrame],bx
-
- //
- // EMS is good
- //
- mov emmcfems,1
- jmp End
-#ifdef __BORLANDC__
- }
-#endif
- error:
-#ifdef __BORLANDC__
- __asm {
-#endif
- //
- // EMS is bad
- //
- mov err,ah
- mov emmcfems,0
-#ifdef __BORLANDC__
- }
-#endif
- End:
-#ifdef __WATCOMC__
- }
-#endif
-
- //
- // Pageframe switch to determine if there is one!
- //
- if(!EMSPageFrame)
- {
- emmcfems = false;
-#if defined(__DEBUG_PM__) || defined(__DEBUG_MM__)
- printf("MML_CheckForEMS: EMS error No Pageframe!\nAddress detected to be %04x\n", EMSPageFrame);
-#endif
- }else if(!emmcfems)// if there is an error and page frame is not 0000
- {
- strcpy(str,"MML_CheckForEMS: EMS error ");
- MM_EMSerr(str, err);
- printf("%s\n",str);
- }
-
- return(emmcfems);
-}
-
-#ifndef __16_PM__
-/*
-======================
-=
-= MML_SetupEMS
-=
-=======================
-*/
-
-byte MML_SetupEMS(global_game_variables_t *gvar)
-{
- byte str[160];
- byte err;
- boolean errorflag=false;
-
- unsigned int EMSVer = 0;
- //byte EMS_status;
- unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSpagesmapped,EMSHandle;
- totalEMSpages = freeEMSpages = EMSPageFrame = EMSpagesmapped = 0;
-
- __asm {
- mov ah,EMS_STATUS
- int EMS_INT // make sure EMS hardware is present
- or ah,ah
- //mov [EMS_status],ah
- jnz error
-
- mov ah,EMS_VERSION
- int EMS_INT
- or ah,ah
- jnz error
- mov [EMSVer],ax // set EMSVer
- cmp al,0x32 // only work on ems 3.2 or greater
- jb error
-
- mov ah,EMS_GETFRAME
- int EMS_INT // find the page frame address
- or ah,ah
- jnz error
- mov [EMSPageFrame],bx
-
- mov ah,EMS_GETPAGES
- int EMS_INT // find out how much EMS is there
- or ah,ah
- jnz error
- mov [totalEMSpages],dx
- mov [freeEMSpages],bx
- or bx,bx
- jz noEMS // no EMS at all to allocate
- //EXPAND DONG!!!!
- cmp [EMSVer],0x40
- jb low
- cmp bx,[freeEMSpages]
- jle getpages
- mov bx,[freeEMSpages]
- jmp getpages
-#ifdef __BORLANDC__
- }
-#endif
- low:
-#ifdef __BORLANDC__
- __asm {
-#endif
- cmp bx,4
- jle getpages // there is only 1,2,3,or 4 pages
- mov bx,4 // we can't use more than 4 pages
-#ifdef __BORLANDC__
- }
-#endif
- getpages:
-#ifdef __BORLANDC__
- __asm {
-#endif
- mov [EMSpagesmapped],bx
- mov ah,EMS_ALLOCPAGES // allocate up to 64k of EMS
- int EMS_INT
- or ah,ah
- jnz error
- mov [EMSHandle],dx
- jmp End
-#ifdef __BORLANDC__
- }
-#endif
- error:
-#ifdef __BORLANDC__
- __asm {
-#endif
- mov err,ah
- mov errorflag,1
- jmp End
-#ifdef __BORLANDC__
- }
-#endif
-noEMS:
-End:
-#ifdef __WATCOMC__
- }
-#endif
- if(errorflag==true)
- {
- strcpy(str,"MM_SetupEMS: EMS error ");
- MM_EMSerr(str, err);
- printf("%s\n",str);
- return err;
- }
- gvar->mm.totalEMSpages=totalEMSpages;
- gvar->mm.freeEMSpages=freeEMSpages;
- gvar->mm.EMSPageFrame=EMSPageFrame;
- gvar->mm.EMSpagesmapped=EMSpagesmapped;
- gvar->mm.EMSHandle=EMSHandle;
- gvar->mm.EMSVer=EMSVer;
- return 0;
-}
-
-
-/*
-======================
-=
-= MML_ShutdownEMS
-=
-=======================
-*/
-
-void MML_ShutdownEMS(global_game_variables_t *gvar)
-{
- boolean errorflag=false;
- unsigned EMSHandle=gvar->mm.EMSHandle;
-
- if(!EMSHandle)
- return;
- __asm {
- mov ah,EMS_FREEPAGES
- mov dx,[EMSHandle]
- int EMS_INT
- or ah,ah
- jz ok
- mov errorflag,1
-#ifdef __BORLANDC__
- }
-#endif
- ok:
-#ifdef __WATCOMC__
- }
-#endif
- if(errorflag==true)
- Quit (gvar, "MML_ShutdownEMS: Error freeing EMS!\n"); //++++ add something
-}
-
-/*
-====================
-=
-= MM_MapEMS
-=
-= Maps the 64k of EMS used by memory manager into the page frame
-= for general use. This only needs to be called if you are keeping
-= other things in EMS.
-=
-====================
-*/
-
-byte MM_MapEMS(global_game_variables_t *gvar)
-{
- byte str[160];
- unsigned EMSHandle;
- byte err;
- boolean errorflag=false;
- int i;
- EMSHandle=gvar->mm.EMSHandle;
-
- for (i=0;i<4/*MAPPAGES*/;i++)
- {
- __asm {
- mov ah,EMS_MAPPAGE
- mov bx,[i] // logical page
- mov al,bl // physical page
- mov dx,[EMSHandle] // handle
- int EMS_INT
- or ah,ah
- jnz error
- jmp End
-#ifdef __BORLANDC__
- }
-#endif
- error:
-#ifdef __BORLANDC__
- __asm {
-#endif
- mov err,ah
- mov errorflag,1
-#ifdef __BORLANDC__
- }
-#endif
- End:
-#ifdef __WATCOMC__
- }
-#endif
- if(errorflag==true)
- {
- strcpy(str,"MM_MapEMS: EMS error ");
- MM_EMSerr(str, err);
- printf("%s\n",str);
- return err;
- }
- }
- gvar->mmi.EMSmem = (i)*0x4000lu;
- return 0;
-}
-
-byte MM_MapXEMS(global_game_variables_t *gvar)
-{
-//SUB EMS.MapXPages (PhysicalStart, LogicalStart, NumPages, Handle)
-
- //Maps up to 4 logical EMS pages to physical pages in the page frame, where:
- //PhysicalStart = Physical page first logical page is mapped to
- //LogicalStart = First logical page to map
- //NumPages = Number of pages to map (1 to 4)
- //Handle = EMS handle logical pages are allocated to
-
- /*//Create a buffer containing the page information
-// FOR x = 0 TO NumPages - 1
-// MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x)
-// NEXT*/
-
-// Regs.ax = 0x5000 //Map the pages in the buffer
-// Regs.cx = NumPages //to the pageframe
-// Regs.dx = Handle
-// Regs.ds = VARSEG(MapInfo$)
-// Regs.si = SADD(MapInfo$)
-// InterruptX 0x67, Regs, Regs
-// EMS.Error = (Regs.ax AND 0xFF00&) \ 0x100 //Store the status code
-
-//END SUB
- byte str[160];
- byte err;
- word EMSHandle;
- boolean errorflag=false;
- int i;
- EMSHandle=gvar->mm.EMSHandle;
-
- if(gvar->mm.EMSVer<0x40)
- return 5;
-
- for (i=0;i<MAPPAGES;i++)
- {
- __asm {
- mov ah,EMS_MAPXPAGE
- mov cx,[i] // logical page
- mov al,bl // physical page
- mov dx,[EMSHandle] // handle
- int EMS_INT
- or ah,ah
- jnz error
- jmp End
-#ifdef __BORLANDC__
- }
-#endif
- error:
-#ifdef __BORLANDC__
- __asm {
-#endif
- mov err,ah
- mov errorflag,1
-#ifdef __BORLANDC__
- }
-#endif
- End:
-#ifdef __WATCOMC__
- }
-#endif
- if(errorflag==true)
- {
- //strcpy(str,"MM_MapXEMS: EMS error 0x");
- strcpy(str,"MM_MapXEMS: EMS error ");
- //itoa(err,str2,16);
- MM_EMSerr(str, err);
- printf("%s\n",str);
- //printf("%s%x\n",str, err);
- //printf("FACK! %x\n", err);
- return err;
- }
- }
- gvar->mmi.EMSmem = (i)*0x4000lu;
- return 0;
-}
-#endif
-//==========================================================================
-
-/*
-======================
-=
-= MML_CheckForXMS
-=
-= Check for XMM driver
-=
-=======================
-*/
-
-boolean MML_CheckForXMS(void)
-{
- //numUMBs = 0;
- boolean errorflag=false;
-
- __asm {
- mov ax,0x4300
- int 0x2f // query status of installed diver
- cmp al,0x80
- je good
- mov errorflag,1
-#ifdef __BORLANDC__
- }
-#endif
- good:
-#ifdef __WATCOMC__
- }
-#endif
- if(errorflag==true) return false;
- else return true;
-}
-
-#ifndef __16_PM__
-/*
-======================
-=
-= MML_SetupXMS
-=
-= Try to allocate all upper memory block
-=
-=======================
-*/
-
-void MML_SetupXMS(global_game_variables_t *gvar)
-{
- word base,size;
-
-
- __asm {
- mov ax,0x4310
- int 0x2f
- mov [WORD PTR XMSaddr],bx
- mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver
- }
-getmemory:
- __asm {
- mov ah,XMS_ALLOCUMB
- mov dx,0xffff // try for largest block possible
- //mov ax,dx // Set available Kbytes.
- call [DWORD PTR XMSaddr]
- or ax,ax
- jnz gotone
-
- cmp bl,0xb0 // error: smaller UMB is available
- jne done;
-
- mov ah,XMS_ALLOCUMB
- call [DWORD PTR XMSaddr] // DX holds largest available UMB
- or ax,ax
- jz done // another error...
-#ifdef __BORLANDC__
- }
-#endif
- gotone:
-#ifdef __BORLANDC__
- __asm {
-#endif
- mov [base],bx
- mov [size],dx
-#ifdef __BORLANDC__
- }
-#endif
- done:
-#ifdef __WATCOMC__
- }
-#endif
-// printf("base=%u ", base); printf("size=%u\n", size);
- MML_UseSpace(base,size, gvar);
- gvar->mmi.XMSmem += size*16;
- gvar->mm.UMBbase[gvar->mm.numUMBs] = base;
- gvar->mm.numUMBs++;
- if(gvar->mm.numUMBs < MAXUMBS)
- goto getmemory;
-}
-
-
-/*
-======================
-=
-= MML_ShutdownXMS
-=
-======================
-*/
-
-void MML_ShutdownXMS(global_game_variables_t *gvar)
-{
- int i;
- unsigned base;
-
- for (i=0;i<gvar->mm.numUMBs;i++)
- {
- base = gvar->mm.UMBbase[i];
- __asm {
- mov ah,XMS_FREEUMB
- mov dx,[base]
- call [DWORD PTR XMSaddr]
- }
- }
-}
-#endif
-//==========================================================================
-
-/*
-======================
-=
-= MML_UseSpace
-=
-= Marks a range of paragraphs as usable by the memory manager
-= This is used to mark space for the near heap, far heap, ems page frame,
-= and upper memory blocks
-=
-======================
-*/
-
-/*
- extra = oldend - (segstart+seglength);
-
- segmlen=extra;
-
- //++++emsver stuff!
- if(segm>1)/// || extra>=0x10000lu)
- //if(extra>0xfffflu)
- {
- scan->blob=segm;
-
- //MML_UseSpace(segstart, seglength, gvar);
-
- printf("MML_UseSpace: Segment spans two blocks!\n");
- //}
- printf("segm=%u ", segm);
- printf("ex=%lu ", extra);
- printf("old=%u ", oldend);
- printf("start+seglen=%lu\n", segstart+seglength);
- printf("segsta=%x ", segstart);
- printf("len=%lu ", scan->length);
- printf("seglen=%lu ", seglength);
- printf("segmlen=%lu\n", segmlen);
- }
-//++++todo: linked list of segment!
-*/
-void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)
-{
- mmblocktype far *scan,far *last;
- word oldend;
- sdword extra;
- //word segm=1;
-
- scan = last = gvar->mm.mmhead;
- gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory
-
-//
-// search for the block that contains the range of segments
-//
- while (scan->start+scan->length < segstart)
- {
- last = scan;
- scan = scan->next;
- }
-
-//
-// find out how many blocks it spans!
-//
- /*for(;seglength>=0x10000;seglength-=0xFFFF)
- {
- //printf(" seglen=%lu\n", segmlen);
- segm++;
- }*/
-
-//
-// take the given range out of the block
-//
- oldend = scan->start + scan->length;
- extra = oldend - (segstart+((unsigned)seglength));
- if (extra < 0)
- {
- printf("========================================\n");
- printf("start=%x ", scan->start);
- printf("old=%u ", oldend);
- printf("start+seglen=%lu\n", segstart+seglength);
- printf("segsta=%x ", segstart);
- printf("len=%lu ", scan->length);
- printf("seglen=%lu ", seglength);
- printf("\n");
- printf("MML_UseSpace: Segment spans two blocks! %d\n", extra);
- printf("========================================\n");
- //return;
- }
-
- if (segstart == scan->start)
- {
- last->next = scan->next; // unlink block
- FREEBLOCK(scan);
- scan = last;
- }
- else
- scan->length = segstart-scan->start; // shorten block
-
- if (extra > 0)
- {
- GETNEWBLOCK;
- gvar->mm.mmnew->useptr = NULL;
-
- gvar->mm.mmnew->next = scan->next;
- scan->next = gvar->mm.mmnew;
- gvar->mm.mmnew->start = segstart+seglength;
- gvar->mm.mmnew->length = extra;
- gvar->mm.mmnew->attributes = LOCKBIT;
- }//else if(segm>0) goto segu;
-
-}
-
-//==========================================================================
-
-/*
-====================
-=
-= MML_ClearBlock
-=
-= We are out of blocks, so free a purgable block
-=
-====================
-*/
-
-void MML_ClearBlock(global_game_variables_t *gvar)
-{
- mmblocktype far *scan;//,far *last;
-
- scan = gvar->mm.mmhead->next;
-
- while(scan)
- {
- if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS))
- {
- MM_FreePtr(scan->useptr, gvar);
- return;
- }
- scan = scan->next;
- }
-
- printf("MM_ClearBlock: No purgable blocks!\n");
-}
-
-
-//==========================================================================
-
-/*
-===================
-=
-= MM_Startup
-=
-= Grabs all space from turbo with malloc/farmalloc
-= Allocates bufferseg misc buffer
-=
-===================
-*/
-
-void MM_Startup(global_game_variables_t *gvar)
-{
- int i;
- //dword length,seglength;
- dword length; word seglength;
- void far *start;
- word segstart;//,endfree;
-
- if(gvar->mm.mmstarted)
- MM_Shutdown(gvar);
-
- gvar->mm.mmstarted = true;
- gvar->mm.bombonerror = true;
-
-//
-// set up the linked list (everything in the free list;
-//
- gvar->mm.mmhead = NULL;
- gvar->mm.mmfree = &(gvar->mm.mmblocks[0]);
- for(i=0;i<MAXBLOCKS-1;i++)
- gvar->mm.mmblocks[i].next = &(gvar->mm.mmblocks[i+1]);
- gvar->mm.mmblocks[i].next = NULL;
-
-//
-// locked block of all memory until we punch out free space
-//
- GETNEWBLOCK;
- gvar->mm.mmhead = gvar->mm.mmnew; // this will allways be the first node
- gvar->mm.mmnew->start = 0;
- gvar->mm.mmnew->length = 0xffff;
- gvar->mm.mmnew->attributes = LOCKBIT;
- gvar->mm.mmnew->next = NULL;
- gvar->mm.mmrover = gvar->mm.mmhead;
-
-//
-// get all available near conventional memory segments
-//
-#ifdef __WATCOMC__
- _nheapgrow();
-#endif
- length=(word)_memavl();//(word)coreleft();
- //start = gvar->mm.nearheap = _fmalloc(length);
-#ifdef __WATCOMC__
- start = (void __far *)(gvar->mm.nearheap = _nmalloc(length));
-#endif
-#ifdef __BORLANDC__
- start = (void far *)(gvar->mm.nearheap = malloc(length));
-#endif
-
- length -= 16-(FP_OFF(start)&15);
- length -= SAVENEARHEAP;
- seglength = length / 16; // now in paragraphs
- segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
- MML_UseSpace(segstart,seglength, gvar);
- gvar->mmi.nearheap = length;
- //0000printf("near: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);
-
-//
-// get all available far conventional memory segments
-//
-#ifdef __WATCOMC__
- _fheapgrow();
-#endif
-#ifdef __BORLANDC__
-// printf("farcoreleft() %lu\n", farcoreleft());
-// printf("(farcoreleft()+32)-_FCORELEFT %d\n", (sword)((farcoreleft()+32)-_FCORELEFT));
-#endif
- length=_FCORELEFT;
- start = gvar->mm.farheap = _fmalloc(length);//start = gvar->mm.farheap = halloc(length, 1);
-
- length -= 16-(FP_OFF(start)&15);
- length -= SAVEFARHEAP;
- seglength = length / 16; // now in paragraphs
- segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;
- MML_UseSpace(segstart,seglength, gvar);
- gvar->mmi.farheap = length;
- //0000printf("far: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);
-
- gvar->mmi.mainmem = gvar->mmi.nearheap + gvar->mmi.farheap;
-
-#if !defined(__16_PM__)// && defined(__WATCOMC__)
- if(!dbg_debugpm) {
-//
-// detect EMS and allocate up to 64K at page frame
-//
- gvar->mmi.EMSmem = 0;
-//goto emsskip; //0000
- for(i = 1;i < _argc;i++)
- {
- if(US_CheckParm(_argv[i],ParmStringsexmm) == 0)
- goto emsskip; // param NOEMS
- }
- if(MML_CheckForEMS())
- {
- MML_SetupEMS(gvar); // allocate space
- //16_PM: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT!
- MML_UseSpace(gvar->mm.EMSPageFrame,(MAPPAGES)*0x4000lu, gvar);
- //if(gvar->pm.emm.EMSVer<0x40)
- MM_MapEMS(gvar); // map in used pages
- //else
- //MM_MapXEMS(gvar); // map in used pages
- }
-
-//
-// detect XMS and get upper memory blocks
-//
-emsskip:
- gvar->mmi.XMSmem = 0;
-goto xmsskip;//0000
- for(i = 1;i < _argc;i++)
- {
- if(US_CheckParm( _argv[i],ParmStringsexmm) == 0)
- goto xmsskip; // param NOXMS
- }
- if(MML_CheckForXMS())
- {
- MML_SetupXMS(gvar); // allocate as many UMBs as possible
- }
-
- }
-xmsskip:
-#endif
-//
-// allocate the misc buffer
-//
- gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block
-
- MM_GetPtr(&(gvar->mm.bufferseg),BUFFERSIZE, gvar);
-}
-
-//==========================================================================
-
-/*
-====================
-=
-= MM_Shutdown
-=
-= Frees all conventional, EMS, and XMS allocated
-=
-====================
-*/
-
-void MM_Shutdown(global_game_variables_t *gvar)
-{
- if(!(gvar->mm.mmstarted))
- return;
-
- _ffree(gvar->mm.farheap);// printf(" far freed\n");
-#ifdef __WATCOMC__
- _nfree(gvar->mm.nearheap);// printf(" near freed\n");
-#endif
-#ifdef __BORLANDC__
- free(gvar->mm.nearheap);// printf(" near freed\n");
-#endif
-#ifndef __16_PM__
-#ifdef __DEBUG__
- if(!dbg_debugpm) {
-#endif
- if(MML_CheckForEMS()){ MML_ShutdownEMS(gvar); }//printf(" EMS freed\n"); }
- if(MML_CheckForXMS()){ MML_ShutdownXMS(gvar); }//printf(" XMS freed\n"); }
-#ifdef __DEBUG__
- }
-#endif
-#endif
-}
-
-//==========================================================================
-
-/*
-====================
-=
-= MM_GetPtr
-=
-= Allocates an unlocked, unpurgable block
-=
-====================
-*/
-
-void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)
-{
- mmblocktype far *scan,far *lastscan,far *endscan,far *purge,far *next;
- int search;
- unsigned needed,startseg;
-
- needed = (size+15)/16; // convert size from bytes to paragraphs
-
- GETNEWBLOCK; // fill in start and next after a spot is found
- gvar->mm.mmnew->length = needed;
- gvar->mm.mmnew->useptr = baseptr;
- //if(gvar->mm.mmnew->useptr==NULL){
-#ifdef __DEBUG_MM__
- if(dbg_debugmm>0){
- printf("MM_GetPtr\n");
- //%04x
- printf(" baseptr=%Fp ", baseptr); printf("useptr=%Fp\n", gvar->mm.mmnew->useptr);
- printf(" *baseptr=%Fp ", *baseptr); printf("*useptr=%Fp\n", *(gvar->mm.mmnew->useptr));
- printf(" &baseptr=%Fp ", &baseptr); printf("&useptr=%Fp\n", &(gvar->mm.mmnew->useptr));
- }
-#endif
- //Quit(gvar, "gvar->mm.mmnew->useptr==NULL"); }
- gvar->mm.mmnew->attributes = BASEATTRIBUTES;
-
-//tryagain:
- for (search = 0; search<3; search++)
- {
- //
- // first search: try to allocate right after the rover, then on up
- // second search: search from the head pointer up to the rover
- // third search: compress memory, then scan from start
- if (search == 1 && gvar->mm.mmrover == gvar->mm.mmhead)
- search++;
-
- switch (search)
- {
- case 0:
- lastscan = gvar->mm.mmrover;
- scan = gvar->mm.mmrover->next;
- endscan = NULL;
- break;
- case 1:
- lastscan = gvar->mm.mmhead;
- scan = gvar->mm.mmhead->next;
- endscan = gvar->mm.mmrover;
- break;
- case 2:
- MM_SortMem (gvar);
- lastscan = gvar->mm.mmhead;
- scan = gvar->mm.mmhead->next;
- endscan = NULL;
- break;
- }
-
- startseg = lastscan->start + lastscan->length;
-
- while (scan != endscan)
- {
- if (scan->start - startseg >= needed)
- {
- //
- // got enough space between the end of lastscan and
- // the start of scan, so throw out anything in the middle
- // and allocate the new block
- //
- purge = lastscan->next;
- lastscan->next = gvar->mm.mmnew;
- gvar->mm.mmnew->start = *(unsigned *)baseptr = startseg;
- gvar->mm.mmnew->next = scan;
- while ( purge != scan)
- { // free the purgable block
- next = purge->next;
- FREEBLOCK(purge);
- purge = next; // purge another if not at scan
- }
- gvar->mm.mmrover = gvar->mm.mmnew;
- return; // good allocation!
- }
-
- //
- // if this block is purge level zero or locked, skip past it
- //
- if ( (scan->attributes & LOCKBIT)
- || !(scan->attributes & PURGEBITS) )
- {
- lastscan = scan;
- startseg = lastscan->start + lastscan->length;
- }
-
-
- scan=scan->next; // look at next line
- }
- }
-
- if (gvar->mm.bombonerror)
- {
-#ifdef __WATCOMC__
- //heapdump();
-#endif
- printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap));
- Quit(gvar, "for stability reasons the program will shut down! wwww\n");
- }
- else
- gvar->mm.mmerror = true;
-}
-
-//==========================================================================
-
-/*
-====================
-=
-= MM_FreePtr
-=
-= Allocates an unlocked, unpurgable block
-=
-====================
-*/
-
-void MM_FreePtr(memptr *baseptr, global_game_variables_t *gvar)
-{
- mmblocktype far *scan,far *last;
-
- last = gvar->mm.mmhead;
- scan = last->next;
-
- if(baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block
- gvar->mm.mmrover = gvar->mm.mmhead;
-
- while(scan->useptr != baseptr && scan)
- {
- last = scan;
- scan = scan->next;
- }
-
- if(!scan)
- {
- Quit(gvar, "MM_FreePtr: Block not found!\n");
- //printf("MM_FreePtr: Block not found!\n"); return;
- }
-
- last->next = scan->next;
-
- FREEBLOCK(scan);
-}
-//==========================================================================
-
-/*
-=====================
-=
-= MM_SetPurge
-=
-= Sets the purge level for a block (locked blocks cannot be made purgable)
-=
-=====================
-*/
-
-
-void MM_SetPurge(memptr *baseptr, int purge, global_game_variables_t *gvar)
-{
- mmblocktype far *start;
-
- start = gvar->mm.mmrover;
-
- do
- {
- if(gvar->mm.mmrover->useptr == baseptr)
- break;
-
- gvar->mm.mmrover = gvar->mm.mmrover->next;
-
- if(!gvar->mm.mmrover)
- gvar->mm.mmrover = gvar->mm.mmhead;
- else if(gvar->mm.mmrover == start)
- {
- Quit (gvar, "MM_SetPurge: Block not found!");
- //return;
- }
-
- } while(1);
-
- gvar->mm.mmrover->attributes &= ~PURGEBITS;
- gvar->mm.mmrover->attributes |= purge;
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_SetLock
-=
-= Locks / unlocks the block
-=
-=====================
-*/
-
-void MM_SetLock(memptr *baseptr, boolean locked, global_game_variables_t *gvar)
-{
- mmblocktype far *start;
-
- start = gvar->mm.mmrover;
-
- do
- {
- if(gvar->mm.mmrover->useptr == baseptr)
- break;
-
- gvar->mm.mmrover = gvar->mm.mmrover->next;
-
- if(!gvar->mm.mmrover)
- gvar->mm.mmrover = gvar->mm.mmhead;
- else if(gvar->mm.mmrover == start)
- {
- Quit (gvar, "MM_SetLock: Block not found!");
- //return;
- }
-
- } while(1);
-
- gvar->mm.mmrover->attributes &= ~LOCKBIT;
- gvar->mm.mmrover->attributes |= locked*LOCKBIT;
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_SortMem
-=
-= Throws out all purgable stuff and compresses movable blocks
-=
-=====================
-*/
-
-void MM_SortMem(global_game_variables_t *gvar)
-{
- mmblocktype far *scan,far *last,far *next;
- unsigned start,length,source,dest,oldborder;
- //++++int playing;
-
- //
- // lock down a currently playing sound
- //
-/*++++ playing = SD_SoundPlaying ();
- if(playing)
- {
- switch (SoundMode)
- {
- case sdm_PC:
- playing += STARTPCSOUNDS;
- break;
- case sdm_AdLib:
- playing += STARTADLIBSOUNDS;
- break;
- }
- MM_SetLock((memptr *)&audiosegs[playing],true);
- }
-
-
- SD_StopSound();*/
- oldborder = gvar->video.bordercolor;
- gvar->video.bordercolor = modexPalOverscan(15);
-
- if(beforesort)
- beforesort();
-
- scan = gvar->mm.mmhead;
-
- last = NULL; // shut up compiler warning
-
- while(scan)
- {
- if(scan->attributes & LOCKBIT)
- {
- //
- // block is locked, so try to pile later blocks right after it
- //
- start = scan->start + scan->length;
- }
- else
- {
- if(scan->attributes & PURGEBITS)
- {
- //
- // throw out the purgable block
- //
- next = scan->next;
- FREEBLOCK(scan);
- //MM_FreeBlock(scan, gvar);
- last->next = next;
- scan = next;
- continue;
- }
- else
- {
- //
- // push the non purgable block on top of the last moved block
- //
- if(scan->start != start)
- {
- length = scan->length;
- source = scan->start;
- dest = start;
- while(length > 0xf00)
- {
- movedata(source,0,dest,0,0xf00*16);
- length -= 0xf00;
- source += 0xf00;
- dest += 0xf00;
- }
- movedata(source,0,dest,0,length*16);
-
- scan->start = start;
- *(unsigned *)scan->useptr = start;
- }
- start = scan->start + scan->length;
- }
- }
-
- last = scan;
- scan = scan->next; // go to next block
- }
-
- gvar->mm.mmrover = gvar->mm.mmhead;
-
- if(aftersort)
- aftersort();
-
- VL_ColorBorder (oldborder, &gvar->video);
-
-/*++++ if(playing)
- MM_SetLock((memptr *)&audiosegs[playing],false);*/
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_ShowMemory
-=
-=====================
-*/
-
-//#define MMSMSORTNEWTYPE
-#define MMSHOWMEMOFFSET 0//(gvar->video.page[0].dx+(gvar->video.page[0].dy*gvar->video.page[0].stridew))
-
-void MM_ShowMemory(global_game_variables_t *gvar)
-{
- mmblocktype far *scan;
- unsigned color,temp,x,y ,w;//,bofstemp;
- sdword end,owner;
- byte scratch[160],scratch0[4096],str[16];
-
-//-- VL_SetLineWidth(40, gvar);
- //temp = gvar->video.ofs.bufferofs;
- //gvar->video.ofs.bufferofs = gvar->video.ofs.displayofs;
- temp = BDOFSCONV gvar->video.BOFS+MMSHOWMEMOFFSET;
- gvar->video.BOFS = gvar->video.DOFS;
- scan = gvar->mm.mmhead;
-
- end = -1; w = 0;
-
- CA_OpenDebug (gvar);
- while (scan)
- {
- strcpy(scratch, AARESET);
- if(scan->attributes & PURGEBITS)
- {
- color = 6; // dark purple = purgable
- strcpy(scratch0, AAMAGENTA); // dark purple = purgable
- }else{
- color = 2; // medium blue = non purgable
- strcpy(scratch0, AABLUE); // medium blue = non purgable
- }
- if(scan->attributes & LOCKBIT)
- {
- color = 1; // red = locked
- strcpy(scratch0, AARED); // red = locked
- }
- if(scan->start<=end)
- {
- printf("\nend==%d\n\n", end);
- strcat(scratch, "MM_ShowMemory: Memory block order currupted!\n");
- strcat(scratch, "End's Size: ");
- ultoa (end,str,10);
- strcat (scratch,str);
- strcat(scratch, "\nscan->start's Size: ");
- ultoa (scan->start,str,10);
- strcat (scratch,str);
- write(gvar->handle.debughandle,scratch,strlen(scratch));
- Quit (gvar, "MM_ShowMemory: Memory block order currupted!");
- }
-#ifdef MMSMSORTNEWTYPE
- end = scan->start+(scan->length)-1;
-#else
- end = scan->length-1;
-#endif
- if(!gvar->video.page[0].width) gvar->video.page[0].width = 352;
- y = scan->start/gvar->video.page[0].width;
- x = scan->start%gvar->video.page[0].width;
- VW_Hlin(x,x+end,y,color,gvar);
- VL_Plot(x,y,15,gvar);
- for(w=(scan->start)/80;w<=end/80;w++)
- {
- //printf("+ %u %lu\n", w, scan->length);
- strcat(scratch0, "+");
- }
- //++==++==optional
- strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_");
-#ifdef MMSMSORTNEWTYPE
- if (scan->next && scan->next->start > end+1)
-#else
- if (scan->next && scan->next->start >= end+1)
-#endif
- {
- VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,3,gvar); // black = free//now green
- strcat(scratch0, AARESET);
-//++==++==optional strcat(scratch0, "\n");
- strcat(scratch0,AAGREEN);
- for(w=(end+1)/80;w<=((scan->next->start-scan->start)/80);w++)
- {
- //printf("0 %x %u %lu\n", scan->next->start, w, scan->length);
- strcat(scratch0,"0");
- }
- //printf("==================\n");
- //printf("w=%u start=%04x next=%04x end=%lu\n", w/80, scan->start, (scan->next->start), end+1);
- //printf("==================\n");
- strcat(scratch0, "\n");
- }
-#if 0
- else {//if(scan->next->start <= scan->start){
- scan->next->start=scan->start+0x1000;
- strcat(scratch0, AARESET);
- strcat(scratch0, "\n");
- strcat(scratch0,AAGREEN);
- for(w=(end+1);w<=(0x1000/80);w++)
- {
- //printf("0 %x %x %u\n", scan->start, w);
- strcat(scratch0,"0");
- }
- printf("================\n");
- printf("w=%x start=%x next=%x end=%u\n", w, scan->start, (scan->next->start), end+1);
- printf("================\n");
- getch();
- }
-#endif
- strcat(scratch0, AARESET);
- //strcat(scratch0,"\n");
- strcat(scratch,"Seg:");
- ultoa (scan->start,str,16);
- strcat (scratch,str);
-// strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);
- strcat (scratch,"\tSize:");
- ultoa ((unsigned)scan->length,str,10);
- strcat (scratch,str);
-// strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);
- strcat (scratch,"\tOwner:0x");
- owner = (unsigned)scan->useptr;
- ultoa (owner,str,16);
- strcat (scratch,str);
- strcat (scratch,"\n");
- write(gvar->handle.debughandle,scratch,strlen(scratch));
- write(gvar->handle.debughandle,scratch0,strlen(scratch0));
-//fprintf(stdout, "%s", scratch);
-
- scan = scan->next;
- }
-
- CA_CloseDebug (gvar);
-
- IN_Ack(gvar);
-//-- VW_SetLineWidth(64);
- //gvar->video.ofs.bufferofs = temp;
- //bofstemp = BDOFSCONV gvar->video.BOFS;//+MMSHOWMEMOFFSET;
- //bofstemp = temp;
- gvar->video.BOFS = (byte __far *)temp;
-}
-
-
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_DumpData
-=
-=====================
-*/
-
-void MM_DumpData(global_game_variables_t *gvar)
-{
- mmblocktype far *scan,far *best;
- long lowest,oldlowest;
- word owner;
- byte lock,purge;
- FILE *dumpfile;
-
-#ifdef __WATCOMC__
- _nfree(gvar->mm.nearheap);
-#endif
-#ifdef __BORLANDC__
- free(gvar->mm.nearheap);
-#endif
-#ifdef __BORLANDC__
- dumpfile = fopen ("mmdump.16b","w");
-#endif
-#ifdef __WATCOMC__
- dumpfile = fopen ("mmdump.16w","w");
-#endif
- if (!dumpfile){
- printf("MM_DumpData: Couldn't open MMDUMP.16!\n");
- return;
- }
-
- lowest = -1;
- do
- {
- oldlowest = lowest;
- lowest = 0xffff;
-
- scan = gvar->mm.mmhead;
- while (scan)
- {
- owner = (unsigned)scan->useptr;
-
- if (owner && owner<lowest && owner > oldlowest)
- {
- best = scan;
- lowest = owner;
- }
-
- scan = scan->next;
- }
-
- if (lowest != 0xffff)
- {
- if (best->attributes & PURGEBITS)
- purge = 'P';
- else
- purge = '-';
- if (best->attributes & LOCKBIT)
- lock = 'L';
- else
- lock = '-';
- fprintf (dumpfile,"0x%p (%c%c) = %u\n"
- ,(unsigned)lowest,lock,purge,best->length);
- }
-
- } while (lowest != 0xffff);
-
- fclose(dumpfile);
- printf("MMDUMP.16 created.\n");
-}
-
-//==========================================================================
-
-
-/*
-======================
-=
-= MM_UnusedMemory
-=
-= Returns the total free space without purging
-=
-======================
-*/
-
-dword MM_UnusedMemory(global_game_variables_t *gvar)
-{
- dword free;
- mmblocktype far *scan;
-
- free = 0;
- scan = gvar->mm.mmhead;
-
- while(scan->next)
- {
- free += scan->next->start - (scan->start + scan->length);
- scan = scan->next;
- }
-
- return free*16lu;
-// return free;
-}
-
-//==========================================================================
-
-
-/*
-======================
-=
-= MM_TotalFree
-=
-= Returns the total free space with purging
-=
-======================
-*/
-
-dword MM_TotalFree(global_game_variables_t *gvar)
-{
- dword free;
- mmblocktype far *scan;
-
- free = 0;
- scan = gvar->mm.mmhead;
-
- while(scan->next)
- {
- if((scan->attributes&PURGEBITS) && !(scan->attributes&LOCKBIT))
- free += scan->length;
- free += scan->next->start - (scan->start + scan->length);
- scan = scan->next;
- }
-
- return free*16lu;
-// return free;
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_Report
-=
-=====================
-*/
-
-void MM_Report_(global_game_variables_t *gvar)
-{
- printf("========================================\n");
- printf(" MM_Report_\n");
- printf("========================================\n");
- if(MML_CheckForEMS())
- {
- printf(" %cLIMEMS %u\n", 0xC9, gvar->pm.emm.EMSPresent);
- printf(" %c%cEMM v%x.%x available\n", 0xC7, 0xC4, gvar->pm.emm.EMSVer>>4,gvar->pm.emm.EMSVer&0x0F);
- printf(" %c%ctotalEMSpages: %u ", 0xC7, 0xC4, gvar->pm.emm.totalEMSpages); printf("freeEMSpages: %u\n", gvar->pm.emm.freeEMSpages);
- printf(" %c%cEMSPageFrame: %04x\n", 0xC7, 0xC4, gvar->pm.emm.EMSPageFrame);
- printf(" %c%cEMSmem: %lu or %luk\n", 0xD3, 0xC4, gvar->mmi.EMSmem, gvar->mmi.EMSmem/1204);
- }
- if(MML_CheckForXMS())
- {
- printf(" %cXMS %u\n", 0xC9, gvar->pm.xmm.XMSPresent);
- printf(" %c%cXMS v%x.%x available\n", 0xC7, 0xC4, XMSVer>>8,XMSVer&0x0F);
- printf(" %c%cXMSDriver: %Fp\n", 0xC7, 0xC4, XMSDriver);
- printf(" %c%cXMSHandle: %04x\n", 0xC7, 0xC4, gvar->pm.xmm.XMSHandle);
- printf(" %c%cXMSmem: %lu or %lukb\n", 0xD3, 0xC4, gvar->mmi.XMSmem, gvar->mmi.XMSmem/1024);
- }
- printf(" %cConv. %u\n", 0xC9, gvar->pm.mm.MainPresent); DebugMemory_(gvar, 0);
- //printf("mainmem: %lu\n", gvar->mmi.mainmem);
- //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);
- //printf(" UnusedMemory: %lu\n", MM_UnusedMemory(gvar));
- printf("nearheap: %lu ", gvar->mmi.nearheap); printf("farheap: %lu\n", gvar->mmi.farheap);
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_EMSerr
-=
-=====================
-*/
-
-void MM_EMSerr(byte *stri, byte err)
-{
- //Returns a text string describing the error code in EMS.Error.
- switch(err)
- {
- case 0x0:
- strcat(stri, "successful");
- break;
- case 0x80:
- strcat(stri, "internal error");
- break;
- case 0x81:
- strcat(stri, "hardware malfunction");
- break;
- case 0x82:
- strcat(stri, "busy .. retry later");
- break;
- case 0x83:
- strcat(stri, "invalid handle");
- break;
- case 0x84:
- strcat(stri, "undefined function requested by application");
- break;
- case 0x85:
- strcat(stri, "no more handles available");
- break;
- case 0x86:
- strcat(stri, "error in save or restore of mapping context");
- break;
- case 0x87:
- strcat(stri, "insufficient memory pages in system");
- break;
- case 0x88:
- strcat(stri, "insufficient memory pages available");
- break;
- case 0x89:
- strcat(stri, "zero pages requested");
- break;
- case 0x8A:
- strcat(stri, "invalid logical page number encountered");
- break;
- case 0x8B:
- strcat(stri, "invalid physical page number encountered");
- break;
- case 0x8C:
- strcat(stri, "page-mapping hardware state save area is full");
- break;
- case 0x8D:
- strcat(stri, "save of mapping context failed");
- break;
- case 0x8E:
- strcat(stri, "restore of mapping context failed");
- break;
- case 0x8F:
- strcat(stri, "undefined subfunction");
- break;
- case 0x90:
- strcat(stri, "undefined attribute type");
- break;
- case 0x91:
- strcat(stri, "feature not supported");
- break;
- case 0x92:
- strcat(stri, "successful, but a portion of the source region has been overwritten");
- break;
- case 0x93:
- strcat(stri, "length of source or destination region exceeds length of region allocated to either source or destination handle");
- break;
- case 0x94:
- strcat(stri, "conventional and expanded memory regions overlap");
- break;
- case 0x95:
- strcat(stri, "offset within logical page exceeds size of logical page");
- break;
- case 0x96:
- strcat(stri, "region length exceeds 1 MB");
- break;
- case 0x97:
- strcat(stri, "source and destination EMS regions have same handle and overlap");
- break;
- case 0x98:
- strcat(stri, "memory source or destination type undefined");
- break;
- case 0x9A:
- strcat(stri, "specified alternate map register or DMA register set not supported");
- break;
- case 0x9B:
- strcat(stri, "all alternate map register or DMA register sets currently allocated");
- break;
- case 0x9C:
- strcat(stri, "alternate map register or DMA register sets not supported");
- break;
- case 0x9D:
- strcat(stri, "undefined or unallocated alternate map register or DMA register set");
- break;
- case 0x9E:
- strcat(stri, "dedicated DMA channels not supported");
- break;
- case 0x9F:
- strcat(stri, "specified dedicated DMA channel not supported");
- break;
- case 0xA0:
- strcat(stri, "no such handle name");
- break;
- case 0xA1:
- strcat(stri, "a handle found had no name, or duplicate handle name");
- break;
- case 0xA2:
- strcat(stri, "attempted to wrap around 1M conventional address space");
- break;
- case 0xA3:
- strcat(stri, "source array corrupted");
- break;
- case 0xA4:
- strcat(stri, "operating system denied access");
- break;
- default:
- strcat(stri, "undefined error");
- }
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_BombOnError
-=
-=====================
-*/
-
-void MM_BombOnError(boolean bomb, global_game_variables_t *gvar)
-{
- gvar->mm.bombonerror = bomb;
-}
-
-#if 0
-void MM_GetNewBlock(global_game_variables_t *gvar)
-{
- if(!gvar->mm.mmfree)
- MML_ClearBlock(gvar);
- gvar->mm.mmnew=gvar->mm.mmfree;
- gvar->mm.mmfree=gvar->mm.mmfree->next;
- if(!(gvar->mm.mmnew=gvar->mm.mmfree))
- {
- printf("MM_GETNEWBLOCK: No free blocks!\n");
- return;
- }
- gvar->mm.mmfree=gvar->mm.mmfree->next;
-}
-
-void MM_FreeBlock(mmblocktype *x, global_game_variables_t *gvar)
-{
- x->useptr=NULL;
- x->next=gvar->mm.mmfree;
- gvar->mm.mmfree=x;
-}
-#endif
-
-void xms_call(byte v, global_game_variables_t *gvar)
-{
- dword XMSDriver = gvar->pm.xmm.XMSDriver;
- __asm {
- mov ah,[v]
- call [DWORD PTR XMSDriver]
- }
-}
-
-/*void MM_seguin(void)
-{
- __asm {
- push ds
- mov ax,ds
- inc ax
- mov ds,ax
- }
-}
-
-void MM_segude(void)
-{
- __asm {
- pop ds
- }
-}*/
-
-/*
-pull data from far and put it into ds var
-mov ax,es:si
-mov x,ax
-*/
-/*
-ss stack segment
-sp top of stack
-bp bottem of stack
-*/
+/* Catacomb Apocalypse Source Code\r
+ * Copyright (C) 1993-2014 Flat Rock Software\r
+ *\r
+ * This program is free software; you can redistribute it and/or modify\r
+ * it under the terms of the GNU General Public License as published by\r
+ * the Free Software Foundation; either version 2 of the License, or\r
+ * (at your option) any later version.\r
+ *\r
+ * This program is distributed in the hope that it will be useful,\r
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ * GNU General Public License for more details.\r
+ *\r
+ * You should have received a copy of the GNU General Public License along\r
+ * with this program; if not, write to the Free Software Foundation, Inc.,\r
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\r
+ */\r
+\r
+// NEWMM.C\r
+\r
+/*\r
+=============================================================================\r
+\r
+ ID software memory manager\r
+ --------------------------\r
+\r
+Primary coder: John Carmack\r
+\r
+RELIES ON\r
+---------\r
+Quit (global_game_variables_t *gvar, char *error) function\r
+\r
+\r
+WORK TO DO\r
+----------\r
+MM_SizePtr to change the size of a given pointer\r
+\r
+Multiple purge levels utilized\r
+\r
+EMS / XMS unmanaged routines\r
+\r
+=============================================================================\r
+*/\r
+/*\r
+\r
+Open Watcom port by sparky4\r
+\r
+*/\r
+#include "src/lib/16_mm.h"\r
+#include "src/lib/16_ca.h"\r
+#include <malloc.h>\r
+#pragma hdrstop\r
+\r
+#pragma warn -pro\r
+#pragma warn -use\r
+\r
+/*\r
+=============================================================================\r
+\r
+ GLOBAL VARIABLES\r
+\r
+=============================================================================\r
+*/\r
+\r
+void (* beforesort) (void);\r
+void (* aftersort) (void);\r
+void (* XMSaddr) (void); // far pointer to XMS driver\r
+\r
+/*\r
+=============================================================================\r
+\r
+ LOCAL VARIABLES\r
+\r
+=============================================================================\r
+*/\r
+#ifndef __16_PM__\r
+static char *ParmStringsexmm[] = {"noems","noxms",""};\r
+#endif\r
+/*\r
+======================\r
+=\r
+= MML_CheckForEMS\r
+=\r
+= Routine from p36 of Extending DOS\r
+=\r
+=======================\r
+*/\r
+\r
+boolean MML_CheckForEMS(void)\r
+{\r
+ boolean emmcfems = false;\r
+ word EMSPageFrame = 0;\r
+ byte err=0, str[64];\r
+ static char emmname[] = "EMMXXXX0"; //fix by andrius4669\r
+ __asm {\r
+ mov dx,OFFSET emmname //fix by andrius4669\r
+ mov ax,0x3d00\r
+ int EMM_INT // try to open EMMXXXX0 device\r
+ jc error\r
+\r
+ mov bx,ax\r
+ mov ax,0x4400\r
+\r
+ int EMM_INT // get device info\r
+ jc error\r
+\r
+ and dx,0x80\r
+ jz error\r
+\r
+ mov ax,0x4407\r
+\r
+ int EMM_INT // get status\r
+ jc error\r
+ or al,al\r
+ jz error\r
+\r
+ mov ah,0x3e\r
+ int EMM_INT // close handle\r
+ jc error\r
+\r
+ //\r
+ // pageframe check\r
+ //\r
+ mov ah,EMS_GETFRAME\r
+ int EMS_INT // find the page frame address\r
+ or ah,ah\r
+ jnz error\r
+ mov [EMSPageFrame],bx\r
+\r
+ //\r
+ // EMS is good\r
+ //\r
+ mov emmcfems,1\r
+ jmp End\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ error:\r
+#ifdef __BORLANDC__\r
+ __asm {\r
+#endif\r
+ //\r
+ // EMS is bad\r
+ //\r
+ mov err,ah\r
+ mov emmcfems,0\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ End:\r
+#ifdef __WATCOMC__\r
+ }\r
+#endif\r
+\r
+ //\r
+ // Pageframe switch to determine if there is one!\r
+ //\r
+ if(!EMSPageFrame)\r
+ {\r
+ emmcfems = false;\r
+#if defined(__DEBUG_PM__) || defined(__DEBUG_MM__)\r
+ printf("MML_CheckForEMS: EMS error No Pageframe!\nAddress detected to be %04x\n", EMSPageFrame);\r
+#endif\r
+ }else if(!emmcfems)// if there is an error and page frame is not 0000\r
+ {\r
+ strcpy(str,"MML_CheckForEMS: EMS error ");\r
+ MM_EMSerr(str, err);\r
+ printf("%s\n",str);\r
+ }\r
+\r
+ return(emmcfems);\r
+}\r
+\r
+#ifndef __16_PM__\r
+/*\r
+======================\r
+=\r
+= MML_SetupEMS\r
+=\r
+=======================\r
+*/\r
+\r
+byte MML_SetupEMS(global_game_variables_t *gvar)\r
+{\r
+ byte str[160];\r
+ byte err;\r
+ boolean errorflag=false;\r
+\r
+ unsigned int EMSVer = 0;\r
+ //byte EMS_status;\r
+ unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSpagesmapped,EMSHandle;\r
+ totalEMSpages = freeEMSpages = EMSPageFrame = EMSpagesmapped = 0;\r
+\r
+ __asm {\r
+ mov ah,EMS_STATUS\r
+ int EMS_INT // make sure EMS hardware is present\r
+ or ah,ah\r
+ //mov [EMS_status],ah\r
+ jnz error\r
+\r
+ mov ah,EMS_VERSION\r
+ int EMS_INT\r
+ or ah,ah\r
+ jnz error\r
+ mov [EMSVer],ax // set EMSVer\r
+ cmp al,0x32 // only work on ems 3.2 or greater\r
+ jb error\r
+\r
+ mov ah,EMS_GETFRAME\r
+ int EMS_INT // find the page frame address\r
+ or ah,ah\r
+ jnz error\r
+ mov [EMSPageFrame],bx\r
+\r
+ mov ah,EMS_GETPAGES\r
+ int EMS_INT // find out how much EMS is there\r
+ or ah,ah\r
+ jnz error\r
+ mov [totalEMSpages],dx\r
+ mov [freeEMSpages],bx\r
+ or bx,bx\r
+ jz noEMS // no EMS at all to allocate\r
+ //EXPAND DONG!!!!\r
+ cmp [EMSVer],0x40\r
+ jb low\r
+ cmp bx,[freeEMSpages]\r
+ jle getpages\r
+ mov bx,[freeEMSpages]\r
+ jmp getpages\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ low:\r
+#ifdef __BORLANDC__\r
+ __asm {\r
+#endif\r
+ cmp bx,4\r
+ jle getpages // there is only 1,2,3,or 4 pages\r
+ mov bx,4 // we can't use more than 4 pages\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ getpages:\r
+#ifdef __BORLANDC__\r
+ __asm {\r
+#endif\r
+ mov [EMSpagesmapped],bx\r
+ mov ah,EMS_ALLOCPAGES // allocate up to 64k of EMS\r
+ int EMS_INT\r
+ or ah,ah\r
+ jnz error\r
+ mov [EMSHandle],dx\r
+ jmp End\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ error:\r
+#ifdef __BORLANDC__\r
+ __asm {\r
+#endif\r
+ mov err,ah\r
+ mov errorflag,1\r
+ jmp End\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+noEMS:\r
+End:\r
+#ifdef __WATCOMC__\r
+ }\r
+#endif\r
+ if(errorflag==true)\r
+ {\r
+ strcpy(str,"MM_SetupEMS: EMS error ");\r
+ MM_EMSerr(str, err);\r
+ printf("%s\n",str);\r
+ return err;\r
+ }\r
+ gvar->mm.totalEMSpages=totalEMSpages;\r
+ gvar->mm.freeEMSpages=freeEMSpages;\r
+ gvar->mm.EMSPageFrame=EMSPageFrame;\r
+ gvar->mm.EMSpagesmapped=EMSpagesmapped;\r
+ gvar->mm.EMSHandle=EMSHandle;\r
+ gvar->mm.EMSVer=EMSVer;\r
+ return 0;\r
+}\r
+\r
+\r
+/*\r
+======================\r
+=\r
+= MML_ShutdownEMS\r
+=\r
+=======================\r
+*/\r
+\r
+void MML_ShutdownEMS(global_game_variables_t *gvar)\r
+{\r
+ boolean errorflag=false;\r
+ unsigned EMSHandle=gvar->mm.EMSHandle;\r
+\r
+ if(!EMSHandle)\r
+ return;\r
+ __asm {\r
+ mov ah,EMS_FREEPAGES\r
+ mov dx,[EMSHandle]\r
+ int EMS_INT\r
+ or ah,ah\r
+ jz ok\r
+ mov errorflag,1\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ ok:\r
+#ifdef __WATCOMC__\r
+ }\r
+#endif\r
+ if(errorflag==true)\r
+ Quit (gvar, "MML_ShutdownEMS: Error freeing EMS!\n"); //++++ add something\r
+}\r
+\r
+/*\r
+====================\r
+=\r
+= MM_MapEMS\r
+=\r
+= Maps the 64k of EMS used by memory manager into the page frame\r
+= for general use. This only needs to be called if you are keeping\r
+= other things in EMS.\r
+=\r
+====================\r
+*/\r
+\r
+byte MM_MapEMS(global_game_variables_t *gvar)\r
+{\r
+ byte str[160];\r
+ unsigned EMSHandle;\r
+ byte err;\r
+ boolean errorflag=false;\r
+ int i;\r
+ EMSHandle=gvar->mm.EMSHandle;\r
+\r
+ for (i=0;i<4/*MAPPAGES*/;i++)\r
+ {\r
+ __asm {\r
+ mov ah,EMS_MAPPAGE\r
+ mov bx,[i] // logical page\r
+ mov al,bl // physical page\r
+ mov dx,[EMSHandle] // handle\r
+ int EMS_INT\r
+ or ah,ah\r
+ jnz error\r
+ jmp End\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ error:\r
+#ifdef __BORLANDC__\r
+ __asm {\r
+#endif\r
+ mov err,ah\r
+ mov errorflag,1\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ End:\r
+#ifdef __WATCOMC__\r
+ }\r
+#endif\r
+ if(errorflag==true)\r
+ {\r
+ strcpy(str,"MM_MapEMS: EMS error ");\r
+ MM_EMSerr(str, err);\r
+ printf("%s\n",str);\r
+ return err;\r
+ }\r
+ }\r
+ gvar->mmi.EMSmem = (i)*0x4000lu;\r
+ return 0;\r
+}\r
+\r
+byte MM_MapXEMS(global_game_variables_t *gvar)\r
+{\r
+//SUB EMS.MapXPages (PhysicalStart, LogicalStart, NumPages, Handle)\r
+\r
+ //Maps up to 4 logical EMS pages to physical pages in the page frame, where:\r
+ //PhysicalStart = Physical page first logical page is mapped to\r
+ //LogicalStart = First logical page to map\r
+ //NumPages = Number of pages to map (1 to 4)\r
+ //Handle = EMS handle logical pages are allocated to\r
+\r
+ /*//Create a buffer containing the page information\r
+// FOR x = 0 TO NumPages - 1\r
+// MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x)\r
+// NEXT*/\r
+\r
+// Regs.ax = 0x5000 //Map the pages in the buffer\r
+// Regs.cx = NumPages //to the pageframe\r
+// Regs.dx = Handle\r
+// Regs.ds = VARSEG(MapInfo$)\r
+// Regs.si = SADD(MapInfo$)\r
+// InterruptX 0x67, Regs, Regs\r
+// EMS.Error = (Regs.ax AND 0xFF00&) \ 0x100 //Store the status code\r
+\r
+//END SUB\r
+ byte str[160];\r
+ byte err;\r
+ word EMSHandle;\r
+ boolean errorflag=false;\r
+ int i;\r
+ EMSHandle=gvar->mm.EMSHandle;\r
+\r
+ if(gvar->mm.EMSVer<0x40)\r
+ return 5;\r
+\r
+ for (i=0;i<MAPPAGES;i++)\r
+ {\r
+ __asm {\r
+ mov ah,EMS_MAPXPAGE\r
+ mov cx,[i] // logical page\r
+ mov al,bl // physical page\r
+ mov dx,[EMSHandle] // handle\r
+ int EMS_INT\r
+ or ah,ah\r
+ jnz error\r
+ jmp End\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ error:\r
+#ifdef __BORLANDC__\r
+ __asm {\r
+#endif\r
+ mov err,ah\r
+ mov errorflag,1\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ End:\r
+#ifdef __WATCOMC__\r
+ }\r
+#endif\r
+ if(errorflag==true)\r
+ {\r
+ //strcpy(str,"MM_MapXEMS: EMS error 0x");\r
+ strcpy(str,"MM_MapXEMS: EMS error ");\r
+ //itoa(err,str2,16);\r
+ MM_EMSerr(str, err);\r
+ printf("%s\n",str);\r
+ //printf("%s%x\n",str, err);\r
+ //printf("FACK! %x\n", err);\r
+ return err;\r
+ }\r
+ }\r
+ gvar->mmi.EMSmem = (i)*0x4000lu;\r
+ return 0;\r
+}\r
+#endif\r
+//==========================================================================\r
+\r
+/*\r
+======================\r
+=\r
+= MML_CheckForXMS\r
+=\r
+= Check for XMM driver\r
+=\r
+=======================\r
+*/\r
+\r
+boolean MML_CheckForXMS(void)\r
+{\r
+ //numUMBs = 0;\r
+ boolean errorflag=false;\r
+\r
+ __asm {\r
+ mov ax,0x4300\r
+ int 0x2f // query status of installed diver\r
+ cmp al,0x80\r
+ je good\r
+ mov errorflag,1\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ good:\r
+#ifdef __WATCOMC__\r
+ }\r
+#endif\r
+ if(errorflag==true) return false;\r
+ else return true;\r
+}\r
+\r
+#ifndef __16_PM__\r
+/*\r
+======================\r
+=\r
+= MML_SetupXMS\r
+=\r
+= Try to allocate all upper memory block\r
+=\r
+=======================\r
+*/\r
+\r
+void MML_SetupXMS(global_game_variables_t *gvar)\r
+{\r
+ word base,size;\r
+\r
+\r
+ __asm {\r
+ mov ax,0x4310\r
+ int 0x2f\r
+ mov [WORD PTR XMSaddr],bx\r
+ mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver\r
+ }\r
+getmemory:\r
+ __asm {\r
+ mov ah,XMS_ALLOCUMB\r
+ mov dx,0xffff // try for largest block possible\r
+ //mov ax,dx // Set available Kbytes.\r
+ call [DWORD PTR XMSaddr]\r
+ or ax,ax\r
+ jnz gotone\r
+\r
+ cmp bl,0xb0 // error: smaller UMB is available\r
+ jne done;\r
+\r
+ mov ah,XMS_ALLOCUMB\r
+ call [DWORD PTR XMSaddr] // DX holds largest available UMB\r
+ or ax,ax\r
+ jz done // another error...\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ gotone:\r
+#ifdef __BORLANDC__\r
+ __asm {\r
+#endif\r
+ mov [base],bx\r
+ mov [size],dx\r
+#ifdef __BORLANDC__\r
+ }\r
+#endif\r
+ done:\r
+#ifdef __WATCOMC__\r
+ }\r
+#endif\r
+// printf("base=%u ", base); printf("size=%u\n", size);\r
+ MML_UseSpace(base,size, gvar);\r
+ gvar->mmi.XMSmem += size*16;\r
+ gvar->mm.UMBbase[gvar->mm.numUMBs] = base;\r
+ gvar->mm.numUMBs++;\r
+ if(gvar->mm.numUMBs < MAXUMBS)\r
+ goto getmemory;\r
+}\r
+\r
+\r
+/*\r
+======================\r
+=\r
+= MML_ShutdownXMS\r
+=\r
+======================\r
+*/\r
+\r
+void MML_ShutdownXMS(global_game_variables_t *gvar)\r
+{\r
+ int i;\r
+ unsigned base;\r
+\r
+ for (i=0;i<gvar->mm.numUMBs;i++)\r
+ {\r
+ base = gvar->mm.UMBbase[i];\r
+ __asm {\r
+ mov ah,XMS_FREEUMB\r
+ mov dx,[base]\r
+ call [DWORD PTR XMSaddr]\r
+ }\r
+ }\r
+}\r
+#endif\r
+//==========================================================================\r
+\r
+/*\r
+======================\r
+=\r
+= MML_UseSpace\r
+=\r
+= Marks a range of paragraphs as usable by the memory manager\r
+= This is used to mark space for the near heap, far heap, ems page frame,\r
+= and upper memory blocks\r
+=\r
+======================\r
+*/\r
+\r
+/*\r
+ extra = oldend - (segstart+seglength);\r
+\r
+ segmlen=extra;\r
+\r
+ //++++emsver stuff!\r
+ if(segm>1)/// || extra>=0x10000lu)\r
+ //if(extra>0xfffflu)\r
+ {\r
+ scan->blob=segm;\r
+\r
+ //MML_UseSpace(segstart, seglength, gvar);\r
+\r
+ printf("MML_UseSpace: Segment spans two blocks!\n");\r
+ //}\r
+ printf("segm=%u ", segm);\r
+ printf("ex=%lu ", extra);\r
+ printf("old=%u ", oldend);\r
+ printf("start+seglen=%lu\n", segstart+seglength);\r
+ printf("segsta=%x ", segstart);\r
+ printf("len=%lu ", scan->length);\r
+ printf("seglen=%lu ", seglength);\r
+ printf("segmlen=%lu\n", segmlen);\r
+ }\r
+//++++todo: linked list of segment!\r
+*/\r
+void MML_UseSpace(word segstart, dword seglength, global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *scan,far *last;\r
+ word oldend;\r
+ sdword extra;\r
+ //word segm=1;\r
+\r
+ scan = last = gvar->mm.mmhead;\r
+ gvar->mm.mmrover = gvar->mm.mmhead; // reset rover to start of memory\r
+\r
+//\r
+// search for the block that contains the range of segments\r
+//\r
+ while (scan->start+scan->length < segstart)\r
+ {\r
+ last = scan;\r
+ scan = scan->next;\r
+ }\r
+\r
+//\r
+// find out how many blocks it spans!\r
+//\r
+ /*for(;seglength>=0x10000;seglength-=0xFFFF)\r
+ {\r
+ //printf(" seglen=%lu\n", segmlen);\r
+ segm++;\r
+ }*/\r
+\r
+//\r
+// take the given range out of the block\r
+//\r
+ oldend = scan->start + scan->length;\r
+ extra = oldend - (segstart+((unsigned)seglength));\r
+ if (extra < 0)\r
+ {\r
+ printf("========================================\n");\r
+ printf("start=%x ", scan->start);\r
+ printf("old=%u ", oldend);\r
+ printf("start+seglen=%lu\n", segstart+seglength);\r
+ printf("segsta=%x ", segstart);\r
+ printf("len=%lu ", scan->length);\r
+ printf("seglen=%lu ", seglength);\r
+ printf("\n");\r
+ printf("MML_UseSpace: Segment spans two blocks! %d\n", extra);\r
+ printf("========================================\n");\r
+ //return;\r
+ }\r
+\r
+ if (segstart == scan->start)\r
+ {\r
+ last->next = scan->next; // unlink block\r
+ FREEBLOCK(scan);\r
+ scan = last;\r
+ }\r
+ else\r
+ scan->length = segstart-scan->start; // shorten block\r
+\r
+ if (extra > 0)\r
+ {\r
+ GETNEWBLOCK;\r
+ gvar->mm.mmnew->useptr = NULL;\r
+\r
+ gvar->mm.mmnew->next = scan->next;\r
+ scan->next = gvar->mm.mmnew;\r
+ gvar->mm.mmnew->start = segstart+seglength;\r
+ gvar->mm.mmnew->length = extra;\r
+ gvar->mm.mmnew->attributes = LOCKBIT;\r
+ }//else if(segm>0) goto segu;\r
+\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+====================\r
+=\r
+= MML_ClearBlock\r
+=\r
+= We are out of blocks, so free a purgable block\r
+=\r
+====================\r
+*/\r
+\r
+void MML_ClearBlock(global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *scan;//,far *last;\r
+\r
+ scan = gvar->mm.mmhead->next;\r
+\r
+ while(scan)\r
+ {\r
+ if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS))\r
+ {\r
+ MM_FreePtr(scan->useptr, gvar);\r
+ return;\r
+ }\r
+ scan = scan->next;\r
+ }\r
+\r
+ printf("MM_ClearBlock: No purgable blocks!\n");\r
+}\r
+\r
+\r
+//==========================================================================\r
+\r
+/*\r
+===================\r
+=\r
+= MM_Startup\r
+=\r
+= Grabs all space from turbo with malloc/farmalloc\r
+= Allocates bufferseg misc buffer\r
+=\r
+===================\r
+*/\r
+\r
+void MM_Startup(global_game_variables_t *gvar)\r
+{\r
+ int i;\r
+ //dword length,seglength;\r
+ dword length; word seglength;\r
+ void far *start;\r
+ word segstart;//,endfree;\r
+\r
+ if(gvar->mm.mmstarted)\r
+ MM_Shutdown(gvar);\r
+\r
+ gvar->mm.mmstarted = true;\r
+ gvar->mm.bombonerror = true;\r
+\r
+//\r
+// set up the linked list (everything in the free list;\r
+//\r
+ gvar->mm.mmhead = NULL;\r
+ gvar->mm.mmfree = &(gvar->mm.mmblocks[0]);\r
+ for(i=0;i<MAXBLOCKS-1;i++)\r
+ gvar->mm.mmblocks[i].next = &(gvar->mm.mmblocks[i+1]);\r
+ gvar->mm.mmblocks[i].next = NULL;\r
+\r
+//\r
+// locked block of all memory until we punch out free space\r
+//\r
+ GETNEWBLOCK;\r
+ gvar->mm.mmhead = gvar->mm.mmnew; // this will allways be the first node\r
+ gvar->mm.mmnew->start = 0;\r
+ gvar->mm.mmnew->length = 0xffff;\r
+ gvar->mm.mmnew->attributes = LOCKBIT;\r
+ gvar->mm.mmnew->next = NULL;\r
+ gvar->mm.mmrover = gvar->mm.mmhead;\r
+\r
+//\r
+// get all available near conventional memory segments\r
+//\r
+#ifdef __WATCOMC__\r
+ _nheapgrow();\r
+#endif\r
+ length=(word)_memavl();//(word)coreleft();\r
+ //start = gvar->mm.nearheap = _fmalloc(length);\r
+#ifdef __WATCOMC__\r
+ start = (void __far *)(gvar->mm.nearheap = _nmalloc(length));\r
+#endif\r
+#ifdef __BORLANDC__\r
+ start = (void far *)(gvar->mm.nearheap = malloc(length));\r
+#endif\r
+\r
+ length -= 16-(FP_OFF(start)&15);\r
+ length -= SAVENEARHEAP;\r
+ seglength = length / 16; // now in paragraphs\r
+ segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;\r
+ MML_UseSpace(segstart,seglength, gvar);\r
+ gvar->mmi.nearheap = length;\r
+ //0000printf("near: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);\r
+\r
+//\r
+// get all available far conventional memory segments\r
+//\r
+#ifdef __WATCOMC__\r
+ _fheapgrow();\r
+#endif\r
+#ifdef __BORLANDC__\r
+// printf("farcoreleft() %lu\n", farcoreleft());\r
+// printf("(farcoreleft()+32)-_FCORELEFT %d\n", (sword)((farcoreleft()+32)-_FCORELEFT));\r
+#endif\r
+ length=_FCORELEFT;\r
+ start = gvar->mm.farheap = _fmalloc(length);//start = gvar->mm.farheap = halloc(length, 1);\r
+\r
+ length -= 16-(FP_OFF(start)&15);\r
+ length -= SAVEFARHEAP;\r
+ seglength = length / 16; // now in paragraphs\r
+ segstart = FP_SEG(start)+(FP_OFF(start)+15)/16;\r
+ MML_UseSpace(segstart,seglength, gvar);\r
+ gvar->mmi.farheap = length;\r
+ //0000printf("far: start=%Fp segstart=%x seglen=%lu len=%lu\n", start, segstart, (dword)seglength, length);\r
+\r
+ gvar->mmi.mainmem = gvar->mmi.nearheap + gvar->mmi.farheap;\r
+\r
+#if !defined(__16_PM__)// && defined(__WATCOMC__)\r
+ if(!dbg_debugpm) {\r
+//\r
+// detect EMS and allocate up to 64K at page frame\r
+//\r
+ gvar->mmi.EMSmem = 0;\r
+//goto emsskip; //0000\r
+ for(i = 1;i < _argc;i++)\r
+ {\r
+ if(US_CheckParm(_argv[i],ParmStringsexmm) == 0)\r
+ goto emsskip; // param NOEMS\r
+ }\r
+ if(MML_CheckForEMS())\r
+ {\r
+ MML_SetupEMS(gvar); // allocate space\r
+ //16_PM: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT!\r
+ MML_UseSpace(gvar->mm.EMSPageFrame,(MAPPAGES)*0x4000lu, gvar);\r
+ //if(gvar->pm.emm.EMSVer<0x40)\r
+ MM_MapEMS(gvar); // map in used pages\r
+ //else\r
+ //MM_MapXEMS(gvar); // map in used pages\r
+ }\r
+\r
+//\r
+// detect XMS and get upper memory blocks\r
+//\r
+emsskip:\r
+ gvar->mmi.XMSmem = 0;\r
+goto xmsskip;//0000\r
+ for(i = 1;i < _argc;i++)\r
+ {\r
+ if(US_CheckParm( _argv[i],ParmStringsexmm) == 0)\r
+ goto xmsskip; // param NOXMS\r
+ }\r
+ if(MML_CheckForXMS())\r
+ {\r
+ MML_SetupXMS(gvar); // allocate as many UMBs as possible\r
+ }\r
+\r
+ }\r
+xmsskip:\r
+#endif\r
+//\r
+// allocate the misc buffer\r
+//\r
+ gvar->mm.mmrover = gvar->mm.mmhead; // start looking for space after low block\r
+\r
+ MM_GetPtr(&(gvar->mm.bufferseg),BUFFERSIZE, gvar);\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+====================\r
+=\r
+= MM_Shutdown\r
+=\r
+= Frees all conventional, EMS, and XMS allocated\r
+=\r
+====================\r
+*/\r
+\r
+void MM_Shutdown(global_game_variables_t *gvar)\r
+{\r
+ if(!(gvar->mm.mmstarted))\r
+ return;\r
+\r
+ _ffree(gvar->mm.farheap);// printf(" far freed\n");\r
+#ifdef __WATCOMC__\r
+ _nfree(gvar->mm.nearheap);// printf(" near freed\n");\r
+#endif\r
+#ifdef __BORLANDC__\r
+ free(gvar->mm.nearheap);// printf(" near freed\n");\r
+#endif\r
+#ifndef __16_PM__\r
+#ifdef __DEBUG__\r
+ if(!dbg_debugpm) {\r
+#endif\r
+ if(MML_CheckForEMS()){ MML_ShutdownEMS(gvar); }//printf(" EMS freed\n"); }\r
+ if(MML_CheckForXMS()){ MML_ShutdownXMS(gvar); }//printf(" XMS freed\n"); }\r
+#ifdef __DEBUG__\r
+ }\r
+#endif\r
+#endif\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+====================\r
+=\r
+= MM_GetPtr\r
+=\r
+= Allocates an unlocked, unpurgable block\r
+=\r
+====================\r
+*/\r
+\r
+void MM_GetPtr (memptr *baseptr, dword size, global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *scan,far *lastscan,far *endscan\r
+ ,far *purge,far *next;\r
+ int search;\r
+ unsigned needed,startseg;\r
+\r
+ needed = (size+15)/16; // convert size from bytes to paragraphs\r
+\r
+ GETNEWBLOCK; // fill in start and next after a spot is found\r
+ gvar->mm.mmnew->length = needed;\r
+ gvar->mm.mmnew->useptr = baseptr;\r
+ //if(gvar->mm.mmnew->useptr==NULL){\r
+#ifdef __DEBUG_MM__\r
+ if(dbg_debugmm>0){\r
+ printf("MM_GetPtr\n");\r
+ //%04x\r
+ printf(" baseptr=%Fp ", baseptr); printf("useptr=%Fp\n", gvar->mm.mmnew->useptr);\r
+ printf(" *baseptr=%Fp ", *baseptr); printf("*useptr=%Fp\n", *(gvar->mm.mmnew->useptr));\r
+ printf(" &baseptr=%Fp ", &baseptr); printf("&useptr=%Fp\n", &(gvar->mm.mmnew->useptr));\r
+ }\r
+#endif\r
+ //Quit(gvar, "gvar->mm.mmnew->useptr==NULL"); }\r
+ gvar->mm.mmnew->attributes = BASEATTRIBUTES;\r
+\r
+//tryagain:\r
+ for (search = 0; search<3; search++)\r
+ {\r
+ //\r
+ // first search: try to allocate right after the rover, then on up\r
+ // second search: search from the head pointer up to the rover\r
+ // third search: compress memory, then scan from start\r
+ if (search == 1 && gvar->mm.mmrover == gvar->mm.mmhead)\r
+ search++;\r
+\r
+ switch (search)\r
+ {\r
+ case 0:\r
+ lastscan = gvar->mm.mmrover;\r
+ scan = gvar->mm.mmrover->next;\r
+ endscan = NULL;\r
+ break;\r
+ case 1:\r
+ lastscan = gvar->mm.mmhead;\r
+ scan = gvar->mm.mmhead->next;\r
+ endscan = gvar->mm.mmrover;\r
+ break;\r
+ case 2:\r
+ MM_SortMem (gvar);\r
+ lastscan = gvar->mm.mmhead;\r
+ scan = gvar->mm.mmhead->next;\r
+ endscan = NULL;\r
+ break;\r
+ }\r
+\r
+ startseg = lastscan->start + lastscan->length;\r
+\r
+ while (scan != endscan)\r
+ {\r
+ if (scan->start - startseg >= needed)\r
+ {\r
+ //\r
+ // got enough space between the end of lastscan and\r
+ // the start of scan, so throw out anything in the middle\r
+ // and allocate the new block\r
+ //\r
+ purge = lastscan->next;\r
+ lastscan->next = gvar->mm.mmnew;\r
+ gvar->mm.mmnew->start = *(unsigned *)baseptr = startseg;\r
+ gvar->mm.mmnew->next = scan;\r
+ while ( purge != scan)\r
+ { // free the purgable block\r
+ next = purge->next;\r
+ FREEBLOCK(purge);\r
+ purge = next; // purge another if not at scan\r
+ }\r
+ gvar->mm.mmrover = gvar->mm.mmnew;\r
+ return; // good allocation!\r
+ }\r
+\r
+ //\r
+ // if this block is purge level zero or locked, skip past it\r
+ //\r
+ if ( (scan->attributes & LOCKBIT)\r
+ || !(scan->attributes & PURGEBITS) )\r
+ {\r
+ lastscan = scan;\r
+ startseg = lastscan->start + lastscan->length;\r
+ }\r
+\r
+\r
+ scan=scan->next; // look at next line\r
+ }\r
+ }\r
+\r
+ if (gvar->mm.bombonerror)\r
+ {\r
+#ifdef __WATCOMC__\r
+ //heapdump();\r
+#endif\r
+ printf(OUT_OF_MEM_MSG,(size-gvar->mmi.nearheap));\r
+ Quit(gvar, "for stability reasons the program will shut down! wwww\n");\r
+ }\r
+ else\r
+ gvar->mm.mmerror = true;\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+====================\r
+=\r
+= MM_FreePtr\r
+=\r
+= Deallocates an unlocked, purgable block\r
+=\r
+====================\r
+*/\r
+\r
+void MM_FreePtr (memptr *baseptr, global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *scan,far *last;\r
+\r
+ last = gvar->mm.mmhead;\r
+ scan = last->next;\r
+\r
+ if (baseptr == gvar->mm.mmrover->useptr) // removed the last allocated block\r
+ gvar->mm.mmrover = gvar->mm.mmhead;\r
+\r
+ while(scan->useptr != baseptr && scan)\r
+ {\r
+ last = scan;\r
+ scan = scan->next;\r
+ }\r
+\r
+ if(!scan)\r
+ Quit (gvar, "MM_FreePtr: Block not found!");\r
+\r
+ last->next = scan->next;\r
+\r
+ FREEBLOCK(scan);\r
+}\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_SetPurge\r
+=\r
+= Sets the purge level for a block (locked blocks cannot be made purgable)\r
+=\r
+=====================\r
+*/\r
+\r
+void MM_SetPurge (memptr *baseptr, int purge, global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *start;\r
+\r
+ start = gvar->mm.mmrover;\r
+\r
+ do\r
+ {\r
+ if (gvar->mm.mmrover->useptr == baseptr)\r
+ break;\r
+\r
+ gvar->mm.mmrover = gvar->mm.mmrover->next;\r
+\r
+ if (!gvar->mm.mmrover)\r
+ gvar->mm.mmrover = gvar->mm.mmhead;\r
+ else if (gvar->mm.mmrover == start)\r
+ Quit (gvar, "MM_SetPurge: Block not found!");\r
+\r
+ } while(1);\r
+\r
+ gvar->mm.mmrover->attributes &= ~PURGEBITS;\r
+ gvar->mm.mmrover->attributes |= purge;\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_SetLock\r
+=\r
+= Locks / unlocks the block\r
+=\r
+=====================\r
+*/\r
+\r
+void MM_SetLock (memptr *baseptr, boolean locked, global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *start;\r
+\r
+ start = gvar->mm.mmrover;\r
+\r
+ do\r
+ {\r
+ if (gvar->mm.mmrover->useptr == baseptr)\r
+ break;\r
+\r
+ gvar->mm.mmrover = gvar->mm.mmrover->next;\r
+\r
+ if (!gvar->mm.mmrover)\r
+ gvar->mm.mmrover = gvar->mm.mmhead;\r
+ else if (gvar->mm.mmrover == start)\r
+ Quit (gvar, "MM_SetLock: Block not found!");\r
+\r
+ } while(1);\r
+\r
+ gvar->mm.mmrover->attributes &= ~LOCKBIT;\r
+ gvar->mm.mmrover->attributes |= locked*LOCKBIT;\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_SortMem\r
+=\r
+= Throws out all purgable stuff and compresses movable blocks\r
+=\r
+=====================\r
+*/\r
+\r
+void MM_SortMem (global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *scan,far *last,far *next;\r
+ unsigned start,length,source,dest,oldborder;\r
+ //++++int playing;\r
+\r
+ //\r
+ // lock down a currently playing sound\r
+ //\r
+/*++++ playing = SD_SoundPlaying ();\r
+ if(playing)\r
+ {\r
+ switch (SoundMode)\r
+ {\r
+ case sdm_PC:\r
+ playing += STARTPCSOUNDS;\r
+ break;\r
+ case sdm_AdLib:\r
+ playing += STARTADLIBSOUNDS;\r
+ break;\r
+ }\r
+ MM_SetLock((memptr *)&audiosegs[playing],true);\r
+ }\r
+\r
+\r
+ SD_StopSound();*/\r
+ oldborder = gvar->video.bordercolor;\r
+ gvar->video.bordercolor = modexPalOverscan(15);\r
+\r
+ if(beforesort)\r
+ beforesort();\r
+\r
+ scan = gvar->mm.mmhead;\r
+\r
+ last = NULL; // shut up compiler warning\r
+\r
+ while(scan)\r
+ {\r
+ if(scan->attributes & LOCKBIT)\r
+ {\r
+ //\r
+ // block is locked, so try to pile later blocks right after it\r
+ //\r
+ start = scan->start + scan->length;\r
+ }\r
+ else\r
+ {\r
+ if(scan->attributes & PURGEBITS)\r
+ {\r
+ //\r
+ // throw out the purgable block\r
+ //\r
+ next = scan->next;\r
+ FREEBLOCK(scan); //MM_FreeBlock(scan, gvar);\r
+ last->next = next;\r
+ scan = next;\r
+ continue;\r
+ }\r
+ else\r
+ {\r
+ //\r
+ // push the non purgable block on top of the last moved block\r
+ //\r
+ if(scan->start != start)\r
+ {\r
+ length = scan->length;\r
+ source = scan->start;\r
+ dest = start;\r
+ while(length > 0xf00)\r
+ {\r
+ movedata(source,0,dest,0,0xf00*16);\r
+ length -= 0xf00;\r
+ source += 0xf00;\r
+ dest += 0xf00;\r
+ }\r
+ movedata(source,0,dest,0,length*16);\r
+\r
+ scan->start = start;\r
+ *(unsigned *)scan->useptr = start;\r
+ }\r
+ start = scan->start + scan->length;\r
+ }\r
+ }\r
+\r
+ last = scan;\r
+ scan = scan->next; // go to next block\r
+ }\r
+\r
+ gvar->mm.mmrover = gvar->mm.mmhead;\r
+\r
+ if(aftersort)\r
+ aftersort();\r
+\r
+ VL_ColorBorder (oldborder, &gvar->video);\r
+\r
+/*++++ if(playing)\r
+ MM_SetLock((memptr *)&audiosegs[playing],false);*/\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_ShowMemory\r
+=\r
+=====================\r
+*/\r
+\r
+//#define MMSMSORTNEWTYPE\r
+#define MMSHOWMEMOFFSET 0//(gvar->video.page[0].dx+(gvar->video.page[0].dy*gvar->video.page[0].stridew))\r
+\r
+void MM_ShowMemory (global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *scan;\r
+ unsigned color,temp,x,y ,w;//,bofstemp;\r
+ sdword end,owner;\r
+ byte scratch[160],scratch0[4096],str[16];\r
+\r
+//-- VL_SetLineWidth(40, gvar);\r
+ //temp = gvar->video.ofs.bufferofs;\r
+ //gvar->video.ofs.bufferofs = gvar->video.ofs.displayofs;\r
+ temp = BDOFSCONV gvar->video.BOFS+MMSHOWMEMOFFSET;\r
+ gvar->video.BOFS = gvar->video.DOFS;\r
+ scan = gvar->mm.mmhead;\r
+\r
+ end = -1; w = 0;\r
+\r
+ CA_OpenDebug (gvar);\r
+ while (scan)\r
+ {\r
+ strcpy(scratch, AARESET);\r
+ if(scan->attributes & PURGEBITS)\r
+ {\r
+ color = 6; // dark purple = purgable\r
+ strcpy(scratch0, AAMAGENTA); // dark purple = purgable\r
+ }else{\r
+ color = 2; // medium blue = non purgable\r
+ strcpy(scratch0, AABLUE); // medium blue = non purgable\r
+ }\r
+ if(scan->attributes & LOCKBIT)\r
+ {\r
+ color = 1; // red = locked\r
+ strcpy(scratch0, AARED); // red = locked\r
+ }\r
+ if(scan->start<=end)\r
+ {\r
+ printf("\nend==%d\n\n", end);\r
+ strcat(scratch, "MM_ShowMemory: Memory block order currupted!\n");\r
+ strcat(scratch, "End's Size: ");\r
+ ultoa (end,str,10);\r
+ strcat (scratch,str);\r
+ strcat(scratch, "\nscan->start's Size: ");\r
+ ultoa (scan->start,str,10);\r
+ strcat (scratch,str);\r
+ write(gvar->handle.debughandle,scratch,strlen(scratch));\r
+ Quit (gvar, "MM_ShowMemory: Memory block order currupted!");\r
+ }\r
+#ifdef MMSMSORTNEWTYPE\r
+ end = scan->start+(scan->length)-1;\r
+#else\r
+ end = scan->length-1;\r
+#endif\r
+ if(!gvar->video.page[0].width) gvar->video.page[0].width = 352;\r
+ y = scan->start/gvar->video.page[0].width;\r
+ x = scan->start%gvar->video.page[0].width;\r
+ VW_Hlin(x,x+end,y,color,gvar);\r
+ VL_Plot(x,y,15,gvar);\r
+ for(w=(scan->start)/80;w<=end/80;w++)\r
+ {\r
+ //printf("+ %u %lu\n", w, scan->length);\r
+ strcat(scratch0, "+");\r
+ }\r
+ //++==++==optional\r
+ strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_");\r
+#ifdef MMSMSORTNEWTYPE\r
+ if (scan->next && scan->next->start > end+1)\r
+#else\r
+ if (scan->next && scan->next->start >= end+1)\r
+#endif\r
+ {\r
+ VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,3,gvar); // black = free//now green\r
+ strcat(scratch0, AARESET);\r
+//++==++==optional strcat(scratch0, "\n");\r
+ strcat(scratch0,AAGREEN);\r
+ for(w=(end+1)/80;w<=((scan->next->start-scan->start)/80);w++)\r
+ {\r
+ //printf("0 %x %u %lu\n", scan->next->start, w, scan->length);\r
+ strcat(scratch0,"0");\r
+ }\r
+ //printf("==================\n");\r
+ //printf("w=%u start=%04x next=%04x end=%lu\n", w/80, scan->start, (scan->next->start), end+1);\r
+ //printf("==================\n");\r
+ strcat(scratch0, "\n");\r
+ }\r
+#if 0\r
+ else {//if(scan->next->start <= scan->start){\r
+ scan->next->start=scan->start+0x1000;\r
+ strcat(scratch0, AARESET);\r
+ strcat(scratch0, "\n");\r
+ strcat(scratch0,AAGREEN);\r
+ for(w=(end+1);w<=(0x1000/80);w++)\r
+ {\r
+ //printf("0 %x %x %u\n", scan->start, w);\r
+ strcat(scratch0,"0");\r
+ }\r
+ printf("================\n");\r
+ printf("w=%x start=%x next=%x end=%u\n", w, scan->start, (scan->next->start), end+1);\r
+ printf("================\n");\r
+ getch();\r
+ }\r
+#endif\r
+ strcat(scratch0, AARESET);\r
+ //strcat(scratch0,"\n");\r
+ strcat(scratch,"Seg:");\r
+ ultoa (scan->start,str,16);\r
+ strcat (scratch,str);\r
+// strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);\r
+ strcat (scratch,"\tSize:");\r
+ ultoa ((unsigned)scan->length,str,10);\r
+ strcat (scratch,str);\r
+// strcat(scratch, AABLACK); strcat(scratch,"\t"); strcat(scratch, AARESET);\r
+ strcat (scratch,"\tOwner:0x");\r
+ owner = (unsigned)scan->useptr;\r
+ ultoa (owner,str,16);\r
+ strcat (scratch,str);\r
+ strcat (scratch,"\n");\r
+ write(gvar->handle.debughandle,scratch,strlen(scratch));\r
+ write(gvar->handle.debughandle,scratch0,strlen(scratch0));\r
+//fprintf(stdout, "%s", scratch);\r
+\r
+ scan = scan->next;\r
+ }\r
+\r
+ CA_CloseDebug (gvar);\r
+\r
+ IN_Ack(gvar);\r
+\r
+ gvar->video.BOFS = (byte __far *)temp;\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_DumpData\r
+=\r
+=====================\r
+*/\r
+\r
+void MM_DumpData (global_game_variables_t *gvar)\r
+{\r
+ mmblocktype far *scan,far *best;\r
+ long lowest,oldlowest;\r
+ unsigned owner;\r
+ char lock,purge;\r
+ FILE *dumpfile;\r
+\r
+#ifdef __WATCOMC__\r
+ _nfree(gvar->mm.nearheap);\r
+#endif\r
+#ifdef __BORLANDC__\r
+ free(gvar->mm.nearheap);\r
+#endif\r
+#ifdef __BORLANDC__\r
+ dumpfile = fopen ("mmdump.16b","w");\r
+#endif\r
+#ifdef __WATCOMC__\r
+ dumpfile = fopen ("mmdump.16w","w");\r
+#endif\r
+ if (!dumpfile){\r
+ printf("MM_DumpData: Couldn't open MMDUMP.16!\n");\r
+ return;\r
+ }\r
+\r
+ lowest = -1;\r
+ do\r
+ {\r
+ oldlowest = lowest;\r
+ lowest = 0xffff;\r
+\r
+ scan = gvar->mm.mmhead;\r
+ while (scan)\r
+ {\r
+ owner = (unsigned)scan->useptr;\r
+\r
+ if (owner && owner<lowest && owner > oldlowest)\r
+ {\r
+ best = scan;\r
+ lowest = owner;\r
+ }\r
+\r
+ scan = scan->next;\r
+ }\r
+\r
+ if (lowest != 0xffff)\r
+ {\r
+ if (best->attributes & PURGEBITS)\r
+ purge = 'P';\r
+ else\r
+ purge = '-';\r
+ if (best->attributes & LOCKBIT)\r
+ lock = 'L';\r
+ else\r
+ lock = '-';\r
+ fprintf (dumpfile,"0x%p (%c%c) = %u\n"\r
+ ,(unsigned)lowest,lock,purge,best->length);\r
+ }\r
+\r
+ } while (lowest != 0xffff);\r
+\r
+ fclose(dumpfile);\r
+ printf("MMDUMP.16 created.\n");\r
+}\r
+\r
+//==========================================================================\r
+\r
+\r
+/*\r
+======================\r
+=\r
+= MM_UnusedMemory\r
+=\r
+= Returns the total free space without purging\r
+=\r
+======================\r
+*/\r
+\r
+dword MM_UnusedMemory (global_game_variables_t *gvar)\r
+{\r
+ unsigned free;\r
+ mmblocktype far *scan;\r
+\r
+ free = 0;\r
+ scan = gvar->mm.mmhead;\r
+\r
+ while(scan->next)\r
+ {\r
+ free += scan->next->start - (scan->start + scan->length);\r
+ scan = scan->next;\r
+ }\r
+\r
+ return free*16lu;\r
+}\r
+\r
+//==========================================================================\r
+\r
+\r
+/*\r
+======================\r
+=\r
+= MM_TotalFree\r
+=\r
+= Returns the total free space with purging\r
+=\r
+======================\r
+*/\r
+\r
+dword MM_TotalFree (global_game_variables_t *gvar)\r
+{\r
+ unsigned free;\r
+ mmblocktype far *scan;\r
+\r
+ free = 0;\r
+ scan = gvar->mm.mmhead;\r
+\r
+ while(scan->next)\r
+ {\r
+ if((scan->attributes&PURGEBITS) && !(scan->attributes&LOCKBIT))\r
+ free += scan->length;\r
+ free += scan->next->start - (scan->start + scan->length);\r
+ scan = scan->next;\r
+ }\r
+\r
+ return free*16lu;\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_Report\r
+=\r
+=====================\r
+*/\r
+\r
+void MM_Report_(global_game_variables_t *gvar)\r
+{\r
+ printf("========================================\n");\r
+ printf(" MM_Report_\n");\r
+ printf("========================================\n");\r
+ if(MML_CheckForEMS())\r
+ {\r
+ printf(" %cLIMEMS %u\n", 0xC9, gvar->pm.emm.EMSPresent);\r
+ printf(" %c%cEMM v%x.%x available\n", 0xC7, 0xC4, gvar->pm.emm.EMSVer>>4,gvar->pm.emm.EMSVer&0x0F);\r
+ printf(" %c%ctotalEMSpages: %u ", 0xC7, 0xC4, gvar->pm.emm.totalEMSpages); printf("freeEMSpages: %u\n", gvar->pm.emm.freeEMSpages);\r
+ printf(" %c%cEMSPageFrame: %04x\n", 0xC7, 0xC4, gvar->pm.emm.EMSPageFrame);\r
+ printf(" %c%cEMSmem: %lu or %luk\n", 0xD3, 0xC4, gvar->mmi.EMSmem, gvar->mmi.EMSmem/1204);\r
+ }\r
+ if(MML_CheckForXMS())\r
+ {\r
+ printf(" %cXMS %u\n", 0xC9, gvar->pm.xmm.XMSPresent);\r
+ printf(" %c%cXMS v%x.%x available\n", 0xC7, 0xC4, XMSVer>>8,XMSVer&0x0F);\r
+ printf(" %c%cXMSDriver: %Fp\n", 0xC7, 0xC4, XMSDriver);\r
+ printf(" %c%cXMSHandle: %04x\n", 0xC7, 0xC4, gvar->pm.xmm.XMSHandle);\r
+ printf(" %c%cXMSmem: %lu or %lukb\n", 0xD3, 0xC4, gvar->mmi.XMSmem, gvar->mmi.XMSmem/1024);\r
+ }\r
+ printf(" %cConv. %u\n", 0xC9, gvar->pm.mm.MainPresent); DebugMemory_(gvar, 0);\r
+ //printf("mainmem: %lu\n", gvar->mmi.mainmem);\r
+ //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
+ //printf(" UnusedMemory: %lu\n", MM_UnusedMemory(gvar));\r
+ printf("nearheap: %lu ", gvar->mmi.nearheap); printf("farheap: %lu\n", gvar->mmi.farheap);\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_EMSerr\r
+=\r
+=====================\r
+*/\r
+\r
+void MM_EMSerr(byte *stri, byte err)\r
+{\r
+ //Returns a text string describing the error code in EMS.Error.\r
+ switch(err)\r
+ {\r
+ case 0x0:\r
+ strcat(stri, "successful");\r
+ break;\r
+ case 0x80:\r
+ strcat(stri, "internal error");\r
+ break;\r
+ case 0x81:\r
+ strcat(stri, "hardware malfunction");\r
+ break;\r
+ case 0x82:\r
+ strcat(stri, "busy .. retry later");\r
+ break;\r
+ case 0x83:\r
+ strcat(stri, "invalid handle");\r
+ break;\r
+ case 0x84:\r
+ strcat(stri, "undefined function requested by application");\r
+ break;\r
+ case 0x85:\r
+ strcat(stri, "no more handles available");\r
+ break;\r
+ case 0x86:\r
+ strcat(stri, "error in save or restore of mapping context");\r
+ break;\r
+ case 0x87:\r
+ strcat(stri, "insufficient memory pages in system");\r
+ break;\r
+ case 0x88:\r
+ strcat(stri, "insufficient memory pages available");\r
+ break;\r
+ case 0x89:\r
+ strcat(stri, "zero pages requested");\r
+ break;\r
+ case 0x8A:\r
+ strcat(stri, "invalid logical page number encountered");\r
+ break;\r
+ case 0x8B:\r
+ strcat(stri, "invalid physical page number encountered");\r
+ break;\r
+ case 0x8C:\r
+ strcat(stri, "page-mapping hardware state save area is full");\r
+ break;\r
+ case 0x8D:\r
+ strcat(stri, "save of mapping context failed");\r
+ break;\r
+ case 0x8E:\r
+ strcat(stri, "restore of mapping context failed");\r
+ break;\r
+ case 0x8F:\r
+ strcat(stri, "undefined subfunction");\r
+ break;\r
+ case 0x90:\r
+ strcat(stri, "undefined attribute type");\r
+ break;\r
+ case 0x91:\r
+ strcat(stri, "feature not supported");\r
+ break;\r
+ case 0x92:\r
+ strcat(stri, "successful, but a portion of the source region has been overwritten");\r
+ break;\r
+ case 0x93:\r
+ strcat(stri, "length of source or destination region exceeds length of region allocated to either source or destination handle");\r
+ break;\r
+ case 0x94:\r
+ strcat(stri, "conventional and expanded memory regions overlap");\r
+ break;\r
+ case 0x95:\r
+ strcat(stri, "offset within logical page exceeds size of logical page");\r
+ break;\r
+ case 0x96:\r
+ strcat(stri, "region length exceeds 1 MB");\r
+ break;\r
+ case 0x97:\r
+ strcat(stri, "source and destination EMS regions have same handle and overlap");\r
+ break;\r
+ case 0x98:\r
+ strcat(stri, "memory source or destination type undefined");\r
+ break;\r
+ case 0x9A:\r
+ strcat(stri, "specified alternate map register or DMA register set not supported");\r
+ break;\r
+ case 0x9B:\r
+ strcat(stri, "all alternate map register or DMA register sets currently allocated");\r
+ break;\r
+ case 0x9C:\r
+ strcat(stri, "alternate map register or DMA register sets not supported");\r
+ break;\r
+ case 0x9D:\r
+ strcat(stri, "undefined or unallocated alternate map register or DMA register set");\r
+ break;\r
+ case 0x9E:\r
+ strcat(stri, "dedicated DMA channels not supported");\r
+ break;\r
+ case 0x9F:\r
+ strcat(stri, "specified dedicated DMA channel not supported");\r
+ break;\r
+ case 0xA0:\r
+ strcat(stri, "no such handle name");\r
+ break;\r
+ case 0xA1:\r
+ strcat(stri, "a handle found had no name, or duplicate handle name");\r
+ break;\r
+ case 0xA2:\r
+ strcat(stri, "attempted to wrap around 1M conventional address space");\r
+ break;\r
+ case 0xA3:\r
+ strcat(stri, "source array corrupted");\r
+ break;\r
+ case 0xA4:\r
+ strcat(stri, "operating system denied access");\r
+ break;\r
+ default:\r
+ strcat(stri, "undefined error");\r
+ }\r
+}\r
+\r
+//==========================================================================\r
+\r
+/*\r
+=====================\r
+=\r
+= MM_BombOnError\r
+=\r
+=====================\r
+*/\r
+\r
+void MM_BombOnError (boolean bomb, global_game_variables_t *gvar)\r
+{\r
+ gvar->mm.bombonerror = bomb;\r
+}\r
+\r
+#if 0\r
+void MM_GetNewBlock(global_game_variables_t *gvar)\r
+{\r
+ if(!gvar->mm.mmfree)\r
+ MML_ClearBlock(gvar);\r
+ gvar->mm.mmnew=gvar->mm.mmfree;\r
+ gvar->mm.mmfree=gvar->mm.mmfree->next;\r
+ if(!(gvar->mm.mmnew=gvar->mm.mmfree))\r
+ {\r
+ printf("MM_GETNEWBLOCK: No free blocks!\n");\r
+ return;\r
+ }\r
+ gvar->mm.mmfree=gvar->mm.mmfree->next;\r
+}\r
+\r
+void MM_FreeBlock(mmblocktype *x, global_game_variables_t *gvar)\r
+{\r
+ x->useptr=NULL;\r
+ x->next=gvar->mm.mmfree;\r
+ gvar->mm.mmfree=x;\r
+}\r
+#endif\r
+\r
+void xms_call(byte v, global_game_variables_t *gvar)\r
+{\r
+ dword XMSDriver = gvar->pm.xmm.XMSDriver;\r
+ __asm {\r
+ mov ah,[v]\r
+ call [DWORD PTR XMSDriver]\r
+ }\r
+}\r
+\r
+/*void MM_seguin(void)\r
+{\r
+ __asm {\r
+ push ds\r
+ mov ax,ds\r
+ inc ax\r
+ mov ds,ax\r
+ }\r
+}\r
+\r
+void MM_segude(void)\r
+{\r
+ __asm {\r
+ pop ds\r
+ }\r
+}*/\r
+\r
+/*\r
+pull data from far and put it into ds var\r
+mov ax,es:si\r
+mov x,ax\r
+*/\r
+/*\r
+ss stack segment\r
+sp top of stack\r
+bp bottem of stack\r
+*/\r
projects / 16.git / commitdiff