X-Git-Url: http://4ch.mooo.com/gitweb/?a=blobdiff_plain;f=src%2Flib%2F16_mm.c;h=d3ed8c23d77f9e646d7a426b022789c30dc81027;hb=ce3c236194323bcbc331bad4a059ea95fb6c7947;hp=9b39812095fe78c53ac3d46158aeb677be23574e;hpb=efbd41cbb9e250cf773a12beac9171f1c843d9e1;p=16.git
diff --git a/src/lib/16_mm.c b/src/lib/16_mm.c
old mode 100644
new mode 100755
index 9b398120..7fe1110d
--- a/src/lib/16_mm.c
+++ b/src/lib/16_mm.c
@@ -1,310 +1,393 @@
-/* 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 (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"
-
-/*
-=============================================================================
-
- GLOBAL VARIABLES
-
-=============================================================================
-*/
-
-void (* beforesort) (void);
-void (* aftersort) (void);
-void (* XMSaddr) (void); // far pointer to XMS driver
-
-/*
-=============================================================================
-
- LOCAL VARIABLES
-
-=============================================================================
-*/
-
-static char *ParmStringsexmm[] = {"noems","noxms",""};
-
-/*
-======================
-=
-= MML_CheckForEMS
-=
-= Routine from p36 of Extending DOS
-=
-=======================
-*/
-
-boolean MML_CheckForEMS(void)
-{
- boolean emmcfems;
- static char emmname[] = "EMMXXXX0"; //fix by andrius4669
-// mov dx,OFFSET emmname
- __asm {
- //LEA DX, emmname //fix by andrius4669
- mov dx,OFFSET emmname //fix by andrius4669
- mov ax,0x3d00
- int 0x21 // try to open EMMXXXX0 device
- jc error
-
- mov bx,ax
- mov ax,0x4400
-
- int 0x21 // get device info
- jc error
-
- and dx,0x80
- jz error
-
- mov ax,0x4407
-
- int 0x21 // get status
- jc error
- or al,al
- jz error
-
- mov ah,0x3e
- int 0x21 // close handle
- jc error
- //
- // EMS is good
- //
- mov emmcfems,1
- jmp End
- error:
- //
- // EMS is bad
- //
- mov emmcfems,0
- End:
- }
- return(emmcfems);
-}
-
-
-/*
-======================
-=
-= MML_SetupEMS
-=
-=======================
-*/
-
-unsigned MML_SetupEMS(mminfo_t *mm)
-{
- char str[80],str2[10];
- unsigned err;
- boolean errorflag=false;
- union REGS CPURegs;
-
- 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
-
-low:
- 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
-
-getpages:
- 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
-error:
- mov errorflag,1
- jmp End
-noEMS:
-End:
- }
- if(errorflag==true)
- {
- err = CPURegs.h.ah;
- strcpy(str,"MML_SetupEMS: EMS error 0x");
- itoa(err,str2,16);
- strcpy(str,str2);
- printf("%s\n",str);
- return err;
- }
- mm->totalEMSpages=totalEMSpages;
- mm->freeEMSpages=freeEMSpages;
- mm->EMSpageframe=EMSpageframe;
- mm->EMSpagesmapped=EMSpagesmapped;
- mm->EMShandle=EMShandle;
- mm->EMSVer=EMSVer;
- return 0;
-}
-
-
-/*
-======================
-=
-= MML_ShutdownEMS
-=
-=======================
-*/
-
-void MML_ShutdownEMS(mminfo_t *mm)
-{
- boolean errorflag=false;
- unsigned EMShandle=mm->EMShandle;
-
- if(!EMShandle)
- return;
- __asm
- {
- mov ah,EMS_FREEPAGES
- mov dx,[EMShandle]
- int EMS_INT
- or ah,ah
- jz ok
- mov errorflag,1
- ok:
- }
- if(errorflag==true) printf("MML_ShutdownEMS: Error freeing EMS!"); //++++ 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.
-=
-====================
-*/
-
-unsigned MM_MapEMS(mminfo_t *mm)
-{
- char str[80],str2[10];
- unsigned err, EMShandle;
- boolean errorflag=false;
- int i;
- union REGS CPURegs;
- EMShandle=mm->EMShandle;
-
- for (i=0;i, or
+ * 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
+#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__
+#if 0
+static char *ParmStringsexmm[] = {"noems","noxms",""};
+#endif
+#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__
+#if 0
+/*
+======================
+=
+= 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:
@@ -318,1103 +401,1530 @@ void MM_MapXEMS(mminfo_t *mm)
// MapInfo$ = MapInfo$ + MKI$(LogicalStart + x) + MKI$(PhysicalStart + x)
// NEXT*/
-// Regs.ax = &H5000 //Map the pages in the buffer
+// 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 &H67, Regs, Regs
-// EMS.Error = (Regs.ax AND &HFF00&) \ &H100 //Store the status code
-
-//END SUB
-}
-
-//==========================================================================
-
-/*
-======================
-=
-= MML_CheckForXMS
-=
-= Check for XMM driver
-=
-=======================
-*/
-
-boolean MML_CheckForXMS(mminfo_t *mm)
-{
- boolean errorflag=false;
- mm->numUMBs = 0;
-
- __asm
- {
- mov ax,0x4300
- int 0x2f // query status of installed diver
- cmp al,0x80
- je good
- mov errorflag,1
- good:
- }
- if(errorflag==true) return false;
- else return true;
-}
-
-
-/*
-======================
-=
-= MML_SetupXMS
-=
-= Try to allocate all upper memory block
-=
-=======================
-*/
-
-void MML_SetupXMS(mminfo_t *mm, mminfotype *mmi)
-{
- unsigned base,size;
-
-getmemory:
- __asm
- {
- mov ax,0x4310
- int 0x2f
- mov [WORD PTR XMSaddr],bx
- mov [WORD PTR XMSaddr+2],es // function pointer to XMS driver
-
- 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...
-
-gotone:
- mov [base],bx
- mov [size],dx
-done:
- }
- printf("base=%u ", base); printf("size=%u\n", size);
- MML_UseSpace(base,size, mm);
- mmi->XMSmem += size*16;
- mm->UMBbase[mm->numUMBs] = base;
- mm->numUMBs++;
- if(mm->numUMBs < MAXUMBS)
- goto getmemory;
-}
-
-
-/*
-======================
-=
-= MML_ShutdownXMS
-=
-======================
-*/
-
-void MML_ShutdownXMS(mminfo_t *mm)
-{
- int i;
- unsigned base;
-
- for (i=0;inumUMBs;i++)
- {
- base = mm->UMBbase[i];
- __asm
- {
- mov ah,XMS_FREEUMB
- mov dx,[base]
- call [DWORD PTR XMSaddr]
- }
- }
-}
-
-//==========================================================================
-
-/*
-======================
-=
-= 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
-=
-======================
-*/
-
-void MML_UseSpace(/*d*/word segstart, dword seglength, mminfo_t *mm)
-{
- mmblocktype huge *scan,huge *last;
- word segm;
- dword oldend;
- dword extra;
-
- scan = last = mm->mmhead;
- mm->mmrover = 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!
- if(seglength>0xffffu)
- {
-// segm=seglength/0x4000u;
- segm=seglength/0xffffu;
- }
- else segm=1;
-
- //++++emsver stuff!
- if(segm>1/*extra>0xfffflu*/)
- {
- /*__asm
- {
- push ds
- mov ax,ds
- inc ax
- mov ds,ax
- }*/
-
-
-//MML_UseSpace(?segstart?, ?length?, mm);
-
- /*__asm
- {
- pop ds
- }*/
- //printf("MML_UseSpace: Segment spans two blocks!\n");
- }
-
-//
-// take the given range out of the block
-//
- oldend = scan->start + scan->length;
- extra = oldend - (segstart+seglength);
-
-printf("segm=%u ", segm);
-printf("ex=%lu ", extra);
-printf("start+seglen=%lu ", segstart+seglength);
-printf("len=%u ", scan->length);
-printf("segsta=%x ", segstart);
-printf("seglen=%lu\n", seglength);
-
-//segu:
-//++++todo: linked list of segment!
-//printf("segm=%lu\n", segm);
- if(segstart == scan->start)
- {
- last->next = scan->next; // unlink block
- MM_FreeBlock(scan, mm);
- scan = last;
- }
- else
- scan->length = segstart-scan->start; // shorten block
-
-// segm--;
-
- if(extra > 0)
- {
- MM_GetNewBlock(mm);
- mm->mmnew->next = scan->next;
- scan->next = mm->mmnew;
- mm->mmnew->start = segstart+seglength;
- mm->mmnew->length = extra;
- 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(mminfo_t *mm)
-{
- mmblocktype huge *scan,huge *last;
-
- scan = mm->mmhead->next;
-
- while(scan)
- {
- if(!(scan->attributes&LOCKBIT) && (scan->attributes&PURGEBITS))
- {
- MM_FreePtr(scan->useptr, mm);
- 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(mminfo_t *mm, mminfotype *mmi)
-{
- int i;
- dword length;
- void huge *start;
- unsigned segstart,seglength,endfree;
-
- if(mm->mmstarted)
- MM_Shutdown(mm);
-
- mm->mmstarted = true;
- mm->bombonerror = true;
-//
-// set up the linked list (everything in the free list;
-//
- mm->mmhead = NULL;
- mm->mmfree = &(mm->mmblocks[0]);
- for(i=0;immblocks[i].next = &(mm->mmblocks[i+1]);
- }
- mm->mmblocks[i].next = NULL;
-
-//
-// locked block of all memory until we punch out free space
-//
- MM_GetNewBlock(mm);
- mm->mmhead = mm->mmnew; // this will allways be the first node
- mm->mmnew->start = 0;
- mm->mmnew->length = 0xffff;
- mm->mmnew->attributes = LOCKBIT;
- mm->mmnew->next = NULL;
- mm->mmrover = mm->mmhead;
-
-// farlen=_bios_memsize()*1024;
-
-//
-// get all available near conventional memory segments
-//
-//---- length=coreleft();
- _nheapgrow();
- length=_memavl();
- start = (void huge *)(mm->nearheap = malloc(length));
- 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, mm);
- mmi->nearheap = length;
- //printf("near heap ok!\n");
-
-//
-// get all available far conventional memory segments
-//
-//---- length=farcoreleft();
- _fheapgrow();
- length=_memavl();
- start = mm->farheap = halloc(length, sizeof(byte));
- //start = mm->farheap = _fmalloc(length);
- 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, mm);
- mmi->farheap = length;
- mmi->mainmem = mmi->nearheap + mmi->farheap;
- //printf("far heap ok!\n");
-
-
-//
-// detect EMS and allocate up to 64K at page frame
-//
- printf("EMS!\n\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"); //bug!
- mmi->EMSmem = 0;
- for(i = 1;i < __argc;i++)
- {
- if(US_CheckParm(__argv[i],ParmStringsexmm) == 0)
- goto emsskip; // param NOEMS
- }
- printf("\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"); //bug!
- if(MML_CheckForEMS())
- {
-printf("EMS1\n");
- MML_SetupEMS(mm); // allocate space
-printf("EMS2\n");
- printf("\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"); //bug!
- //TODO: EMS4! AND EMS 3.2 MASSIVE DATA HANDLMENT!
- MML_UseSpace(mm->EMSpageframe,(MAPPAGES)*0x4000lu, mm);
-printf("EMS3\n");
- MM_MapEMS(mm); // map in used pages
-printf("EMS4\n");
- mmi->EMSmem = (MAPPAGES)*0x4000lu;
- }
-
-//
-// detect XMS and get upper memory blocks
-//
-emsskip:
- mmi->XMSmem = 0;
- for(i = 1;i < __argc;i++)
- {
- if(US_CheckParm(__argv[i],ParmStringsexmm) == 0)
- goto xmsskip; // param NOXMS
- }
- printf("\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"); //bug!
- if(MML_CheckForXMS(mm))
- {
- printf("XMS!\n");
- //MML_SetupXMS(mm, mmi); // allocate as many UMBs as possible
- }
-
-//
-// allocate the misc buffer
-//
-xmsskip:
- mm->mmrover = mm->mmhead; // start looking for space after low block
-
- MM_GetPtr(&(mm->bufferseg),BUFFERSIZE, mm, mmi);
-}
-
-//==========================================================================
-
-/*
-====================
-=
-= MM_Shutdown
-=
-= Frees all conventional, EMS, and XMS allocated
-=
-====================
-*/
-
-void MM_Shutdown(mminfo_t *mm)
-{
- if(!(mm->mmstarted))
- return;
-
- _ffree(mm->farheap);
- printf("far freed\n");
- free(mm->nearheap);
- printf("near freed\n");
- //hfree(mm->hugeheap);
- //printf("huge freed\n");
- if(MML_CheckForEMS()){ MML_ShutdownEMS(mm); printf("EMS freed\n"); }
- if(MML_CheckForXMS(mm)){ MML_ShutdownXMS(mm); printf("XMS freed\n"); }
-}
-
-//==========================================================================
-
-/*
-====================
-=
-= MM_GetPtr
-=
-= Allocates an unlocked, unpurgable block
-=
-====================
-*/
-
-void MM_GetPtr(memptr *baseptr,dword size, mminfo_t *mm, mminfotype *mmi)
-{
- mmblocktype huge *scan,huge *lastscan,huge *endscan,huge *purge,huge *next;
- int search;
- unsigned needed,startseg;
-
- needed = (size+15)/16; // convert size from bytes to paragraphs
-
- MM_GetNewBlock(mm); // fill in start and next after a spot is found
- mm->mmnew->length = needed;
- mm->mmnew->useptr = baseptr;
- mm->mmnew->attributes = BASEATTRIBUTES;
-
- 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 && mm->mmrover == mm->mmhead)
- search++;
-
- switch(search)
- {
- case 0:
- lastscan = mm->mmrover;
- scan = mm->mmrover->next;
- endscan = NULL;
- break;
- case 1:
- lastscan = mm->mmhead;
- scan = mm->mmhead->next;
- endscan = mm->mmrover;
- break;
- case 2:
- MM_SortMem(mm);
- lastscan = mm->mmhead;
- scan = 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 = mm->mmnew;
- mm->mmnew->start = *(unsigned *)baseptr = startseg;
- mm->mmnew->next = scan;
- while(purge != scan)
- { // free the purgable block
- next = purge->next;
- MM_FreeBlock(purge, mm);
- purge = next; // purge another if not at scan
- }
- mm->mmrover = 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 (mm->bombonerror)
- printf(OUT_OF_MEM_MSG,(size-mmi->nearheap));
- else
- mm->mmerror = true;
-}
-
-//==========================================================================
-
-/*
-====================
-=
-= MM_FreePtr
-=
-= Allocates an unlocked, unpurgable block
-=
-====================
-*/
-
-void MM_FreePtr(memptr *baseptr, mminfo_t *mm)
-{
- mmblocktype huge *scan,huge *last;
-
- last = mm->mmhead;
- scan = last->next;
-
- if(baseptr == mm->mmrover->useptr) // removed the last allocated block
- mm->mmrover = mm->mmhead;
-
- while(scan->useptr != baseptr && scan)
- {
- last = scan;
- scan = scan->next;
- }
-
- if(!scan)
- {
- printf("MM_FreePtr: Block not found!\n");
- return;
- }
-
- last->next = scan->next;
-
- MM_FreeBlock(scan, mm);
-}
-//==========================================================================
-
-/*
-=====================
-=
-= MM_SetPurge
-=
-= Sets the purge level for a block (locked blocks cannot be made purgable)
-=
-=====================
-*/
-
-void MM_SetPurge(memptr *baseptr, int purge, mminfo_t *mm)
-{
- mmblocktype huge *start;
-
- start = mm->mmrover;
-
- do
- {
- if(mm->mmrover->useptr == baseptr)
- break;
-
- mm->mmrover = mm->mmrover->next;
-
- if(!mm->mmrover)
- mm->mmrover = mm->mmhead;
- else if(mm->mmrover == start)
- {
- printf("MM_SetPurge: Block not found!");
- return;
- }
-
- } while(1);
-
- mm->mmrover->attributes &= ~PURGEBITS;
- mm->mmrover->attributes |= purge;
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_SetLock
-=
-= Locks / unlocks the block
-=
-=====================
-*/
-
-void MM_SetLock(memptr *baseptr, boolean locked, mminfo_t *mm)
-{
- mmblocktype huge *start;
-
- start = mm->mmrover;
-
- do
- {
- if(mm->mmrover->useptr == baseptr)
- break;
-
- mm->mmrover = mm->mmrover->next;
-
- if(!mm->mmrover)
- mm->mmrover = mm->mmhead;
- else if(mm->mmrover == start)
- {
- printf("MM_SetLock: Block not found!");
- return;
- }
-
- } while(1);
-
- mm->mmrover->attributes &= ~LOCKBIT;
- mm->mmrover->attributes |= locked*LOCKBIT;
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_SortMem
-=
-= Throws out all purgable stuff and compresses movable blocks
-=
-=====================
-*/
-
-void MM_SortMem(mminfo_t *mm)
-{
- mmblocktype huge *scan,huge *last,huge *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 = bordercolor;
-// VW_ColorBorder (15);
-
- if(beforesort)
- beforesort();
-
- scan = 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;
- MM_FreeBlock(scan, mm);
- 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
- }
-
- mm->mmrover = mm->mmhead;
-
- if(aftersort)
- aftersort();
-
-// VW_ColorBorder (oldborder);
-
-/*++++ if(playing)
- MM_SetLock(&(memptr)audiosegs[playing],false);*/
-}
-
-
-//==========================================================================
-
-//****#if 0
-/*
-=====================
-=
-= MM_ShowMemory
-=
-=====================
-*/
-
-void MM_ShowMemory(page_t *page, mminfo_t *mm)
-{
- mmblocktype huge *scan;
- word color,temp;
- long end,owner;
- word chx,chy;
- byte scratch[160],str[16];
-
-//**** VW_SetDefaultColors();
-//**** VW_SetLineWidth(40);
-//++++mh temp = bufferofs;
-//++++mh bufferofs = 0;
-//**** VW_SetScreen (0,0);
-
- scan = mm->mmhead;
-
- end = -1;
-
-CA_OpenDebug ();
-
- chx=0;
- chy=0;
-
- while(scan)
- {
- if(scan->attributes & PURGEBITS)
- color = 5; // dark purple = purgable
- else
- color = 9; // medium blue = non purgable
- if(scan->attributes & LOCKBIT)
- color = 12; // red = locked
- if(scan->start<=end)
- {
- //printf(");
- write(debughandle,"\nMM_ShowMemory: Memory block order currupted!\n",strlen("\nMM_ShowMemory: Memory block order currupted!\n"));
- //modexprint(&page, chx, chy, 1, 0, 24, "\nMM_ShowMemory: Memory block order currupted!\n");
- return;
- }
- end = scan->start+scan->length-1;
- chy = scan->start/320;
- chx = scan->start%320;
- //modexhlin(page, scan->start, (unsigned)end, chy, color);
- //for(chx=scan->start;chx+4>=(word)end;chx+=4)
- //{
- modexClearRegion(page, chx, chy, 4, 4, color);
- //}
-
-//++++ VW_Hlin(scan->start,(unsigned)end,0,color);
-
-//++++ VW_Plot(scan->start,0,15);
- modexClearRegion(page, chx, chy, 4, 4, 15);
- if(scan->next->start > end+1)
-//++++ VW_Hlin(end+1,scan->next->start,0,0); // black = free
- //for(chx=scan->next->start;chx+4>=(word)end+1;chx+=4)
- //{
- chx+=scan->next->start;
- modexClearRegion(page, chx, chy, 4, 4, 2);
- //}
- //modexhlin(page, end+1,scan->next->start, chy, 0);
-
-/*
- end = scan->length-1;
- y = scan->start/320;
- x = scan->start%320;
- VW_Hlin(x,x+end,y,color);
- VW_Plot(x,y,15);
- if (scan->next && scan->next->start > end+1)
- VW_Hlin(x+end+1,x+(scan->next->start-scan->start),y,0); // black = free
-*/
-
-//****#if 0
-printf("\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"); //bug!
-strcpy(scratch,"Seg:");
-ultoa (scan->start,str,16);
-strcat (scratch,str);
-strcat (scratch,"\tSize:");
-ltoa ((dword)scan->length*16,str,10);
-strcat (scratch,str);
-strcat (scratch,"\tOwner:0x");
-owner = (unsigned)scan->useptr;
-ultoa (owner,str,16);
-strcat (scratch,str);
-strcat (scratch,"\n");
-write(debughandle,scratch,strlen(scratch));
-//modexprint(page, chx, chy, 1, 0, 24, &scratch);
-chy+=4;
-//fprintf(stdout, "%s", scratch);
-//****#endif
-
- scan = scan->next;
- }
-
-CA_CloseDebug ();
-
-//++++mh IN_Ack();
-//**** VW_SetLineWidth(64);
-//++++mh bufferofs = temp;
-}
-//****#endif
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_DumpData
-=
-=====================
-*/
-
-void MM_DumpData(mminfo_t *mm)
-{
- mmblocktype far *scan,far *best;
- long lowest,oldlowest;
- word owner;
- byte lock,purge;
- FILE *dumpfile;
-
-
- free (mm->nearheap);
- dumpfile = fopen ("mmdump.txt","w");
- if (!dumpfile){
- printf("MM_DumpData: Couldn't open MMDUMP.TXT!\n");
- return;
- }
-
- lowest = -1;
- do
- {
- oldlowest = lowest;
- lowest = 0xffff;
-
- scan = mm->mmhead;
- while (scan)
- {
- owner = (word)scan->useptr;
-
- if (owner && 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"
- ,(word)lowest,lock,purge,best->length);
- }
-
- } while (lowest != 0xffff);
-
- fclose (dumpfile);
- printf("MMDUMP.TXT created.\n");
-}
-
-//==========================================================================
-
-
-/*
-======================
-=
-= MM_UnusedMemory
-=
-= Returns the total free space without purging
-=
-======================
-*/
-
-dword MM_UnusedMemory(mminfo_t *mm)
-{
- dword free;
- mmblocktype huge *scan;
-
- free = 0;
- scan = mm->mmhead;
-
- while(scan->next)
- {
- free += scan->next->start - (scan->start + scan->length);
- scan = scan->next;
- }
-
- return free*16l;
-// return free;
-}
-
-//==========================================================================
-
-
-/*
-======================
-=
-= MM_TotalFree
-=
-= Returns the total free space with purging
-=
-======================
-*/
-
-dword MM_TotalFree(mminfo_t *mm)
-{
- dword free;
- mmblocktype huge *scan;
-
- free = 0;
- scan = 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*16l;
-// return free;
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_Report
-=
-=====================
-*/
-
-void MM_Report(page_t *page, mminfo_t *mm, mminfotype *mmi)
-{
- if(MML_CheckForEMS())
- {
- printf("EMM v%x.%x available\n", mm->EMSVer>>4,mm->EMSVer&0x0F);
- printf("totalEMSpages=%u\n", mm->totalEMSpages);
- printf("freeEMSpages=%u\n", mm->freeEMSpages);
- printf("EMSpageframe=%x\n", mm->EMSpageframe);
- }
- if(MML_CheckForXMS(mm)) printf("XMSaddr=%Fp\n", *XMSaddr);
- printf("near=%lu\n", mmi->nearheap);
- printf("far=%lu\n", mmi->farheap);
- printf("EMSmem=%lu\n", mmi->EMSmem);
- printf("XMSmem=%lu\n", mmi->XMSmem);
- printf("mainmem=%lu\n", mmi->mainmem);
- printf("UnusedMemory=%lu\n", MM_UnusedMemory(mm));
- printf("TotalFree=%lu\n", MM_TotalFree(mm));
-// printf("\n");
-// printf("UnusedMemory=%lu kb\n", MM_UnusedMemory()/10248);
-// printf("TotalFree=%lu kb\n", MM_TotalFree()/10248);
-}
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_EMSVer
-=
-=====================
-
-
-int MM_EMSVer(void)
-{
- int EMSver;
- __asm
- {
- mov ah,EMS_VERSION
- int EMS_INT
- mov EMSver,ax
- }
- return(EMSver);
-}*/
-
-//==========================================================================
-
-/*
-=====================
-=
-= MM_BombOnError
-=
-=====================
-*/
-
-void MM_BombOnError(boolean bomb, mminfo_t *mm)
-{
- mm->bombonerror = bomb;
-}
-
-void MM_GetNewBlock(mminfo_t *mm)
-{
- if(!mm->mmfree)
- MML_ClearBlock(mm);
- mm->mmnew=mm->mmfree;
- mm->mmfree=mm->mmfree->next;
- /*if(!(mm->mmnew=mm->mmfree))
- {
- printf("MM_GETNEWBLOCK: No free blocks!");
- return;
- }
- mm->mmfree=mm->mmfree->next;*/
-}
-
-void MM_FreeBlock(mmblocktype *x, mminfo_t *mm)
-{
- x->useptr=NULL;
- x->next=mm->mmfree;
- mm->mmfree=x;
-}
-
-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
-*/
+// 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;immi.EMSmem = (i)*0x4000lu;
+ return 0;
+}
+#endif
+#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__
+#if 0
+/*
+======================
+=
+= 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;imm.numUMBs;i++)
+ {
+ base = gvar->mm.UMBbase[i];
+ __asm {
+ mov ah,XMS_FREEUMB
+ mov dx,[base]
+ call [DWORD PTR XMSaddr]
+ }
+ }
+}
+#endif
+#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;imm.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 0
+ 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
+#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__
+#if 0
+#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
+#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
+=
+= Deallocates an unlocked, purgable 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!");
+
+ 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!");
+
+ } 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!");
+
+ } 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
+=
+=====================
+*/
+
+#ifdef __WATCOMC__
+//#define MMSMPANVID
+#define MMSMSCANINFO
+#endif
+
+void MM_ShowMemory (global_game_variables_t *gvar)
+{
+ mmblocktype far *scan;
+ unsigned color,temp,x,y ,w,q,width;
+ sdword end,owner;
+ byte scratch[160],scratch0[4096],str[16];
+ mmshowmemoryinfo_t scaninfo[MAXBLOCKS];
+
+ if(!gvar->video.page[0].width) gvar->video.page[0].sw = gvar->video.page[0].width = 320; //to prevent division by 0
+//-- VL_SetLineWidth(40, gvar);
+ //temp = gvar->video.ofs.bufferofs;
+ //gvar->video.ofs.bufferofs = gvar->video.ofs.displayofs;
+ temp = BDOFSCONV gvar->video.BOFS;
+ gvar->video.BOFS = gvar->video.DOFS;
+ scan = gvar->mm.mmhead;
+
+ end = -1; w = 0;
+
+ width = gvar->video.page[0].width; q = 0;
+
+ CA_OpenDebug (gvar);
+ while (scan)
+ {
+ scaninfo[q].scan = 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!");
+ }
+ end = scan->length-1;
+ y = scan->start/width;
+ x = scan->start%width;
+ scaninfo[q].x = x;
+ scaninfo[q].y = y;
+ VW_Hlin(x,x+end,y,color,gvar);
+ VL_Plot(x,y,5,gvar);
+//++==++==optional strcat(scratch0, AARESET); strcat(scratch0, AAGREY); strcat(scratch0,"_");
+ for(w=(scan->start)/80;w<=end/80;w++)
+ {
+//printf("+ %u %lu\n", w, scan->length);
+ strcat(scratch0, "+");
+ }
+
+ if (scan->next && scan->next->start > end+1)
+ {
+ 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;
+ q++;
+//if(color!=6) IN_Ack(gvar);
+ }
+
+ CA_CloseDebug (gvar);
+
+#ifdef MMSMPANVID
+ {
+ int dx,dy,odx,ody;
+ odx = gvar->video.page[0].dx;
+ ody = gvar->video.page[0].dy;
+ dx = dy = 0;
+ while(!gvar->in.inst->Keyboard[sc_Escape])
+ {
+ if(gvar->in.inst->Keyboard[sc_UpArrow])
+ {
+ if(dy>0)
+ dy--;
+ }
+ else if(gvar->in.inst->Keyboard[sc_DownArrow])
+ {
+ if(dyvideo.page[0].height-gvar->video.page[0].sh)
+ dy++;
+ }
+ if(gvar->in.inst->Keyboard[sc_LeftArrow])
+ {
+ if(dx>0)
+ dx--;
+ }
+ else if(gvar->in.inst->Keyboard[sc_RightArrow])
+ {
+ if(dxvideo.page[0].width-gvar->video.page[0].sw)
+ dx++;
+ }
+
+ modexPanPage(&gvar->video.page[0], dx, dy);
+ VL_ShowPage(&gvar->video.page[0], 1, 1);
+ }
+
+ gvar->video.page[0].dx = odx;
+ gvar->video.page[0].dy = ody;
+ }
+#endif
+#ifdef MMSMSCANINFO
+ {
+ byte scratch1[4];
+ unsigned maxq = q;
+ boolean done;
+ ScanCode scancode;
+ int xpos,ypos;
+ word qq, ccolor = 3;
+ IN_Ack(gvar);
+// VL_ClearVideo (8);
+ for (qq = 0,done = false;!done;)
+ {
+ if(scaninfo[qq].scan->attributes & PURGEBITS)
+ {
+ ccolor = 6; // dark purple = purgable
+ strcpy(scratch1, AAMAGENTA); // dark purple = purgable
+ //printf("%s", AAMAGENTA);
+ }else{
+ ccolor = 2; // medium blue = non purgable
+ strcpy(scratch1, AABLUE); // medium blue = non purgable
+ //printf("%s", AABLUE);
+ }
+ if(scaninfo[qq].scan->attributes & LOCKBIT)
+ {
+ ccolor = 1; // red = locked
+ strcpy(scratch1, AARED); // red = locked
+ //printf("%s", AARED);
+ }
+ end = scaninfo[qq].scan->length-1;
+/*typedef struct mmblockstruct{
+ word start,length;
+ unsigned attributes;
+ memptr *useptr; // pointer to the segment start
+ struct mmblockstruct far *next;
+} mmblocktype;*/
+ //modexprint(page, x, y, t, tlsw, color, bgcolor, vidsw, const byte *str);
+#define MMSMPRINTMEMINFO modexprint(&(gvar->video.page[0]), xpos, ypos, 1, 0, ccolor, 8, gvar->video.VL_Started, global_temp_status_text); ypos+=8;
+ if(!gvar->video.VL_Started) clrscr(); else
+ {
+ VL_ShowPage(&gvar->video.page[0], 1, 0);
+ modexClearRegion(&gvar->video.page[0], 0, 0, gvar->video.page[0].width, gvar->video.page[0].height, 8);
+ }
+ sprintf(global_temp_status_text, "block #%04u", qq); MMSMPRINTMEMINFO
+// sprintf(global_temp_status_text, "%Fp", scaninfo[qq].scan->useptr); MMSMPRINTMEMINFO
+ sprintf(global_temp_status_text, "%04x", (unsigned)scaninfo[qq].scan->useptr); MMSMPRINTMEMINFO
+ sprintf(global_temp_status_text, "size: %05u", (unsigned)scaninfo[qq].scan->length); MMSMPRINTMEMINFO
+ if (scaninfo[qq].scan->next && scaninfo[qq].scan->next->start > end+1)
+ {
+ sprintf(global_temp_status_text, "free: %05u", (unsigned)(scaninfo[qq].scan->next->start-scaninfo[qq].scan->start)); MMSMPRINTMEMINFO
+ }
+ if(gvar->video.VL_Started)
+ {
+ y = ypos;//scaninfo[qq].scan->start/width;
+ x = xpos;//scaninfo[qq].scan->start%width;
+ VW_Hlin(x,x+end,y,ccolor,gvar);
+ VL_Plot(x,y,5,gvar);
+ }
+ else
+ {
+ printf("%s", scratch1);
+ printf("%s", AAGREY); printf("_");
+ for(w=(scaninfo[qq].scan->start)/80;w<=end/80;w++)
+ {
+ //strcat(scratch1, "+");
+ printf("+");
+ }
+ }
+
+
+ if (scaninfo[qq].scan->next && scaninfo[qq].scan->next->start > end+1) if(!gvar->video.VL_Started)
+ {
+ //strcat(scratch1, AARESET);
+ printf("%s", AARESET);
+ //strcat(scratch1,AAGREEN);
+ printf("%s", AAGREEN);
+ for(w=(end+1)/80;w<=((scaninfo[qq].scan->next->start-scaninfo[qq].scan->start)/80);w++)
+ {
+ //strcat(scratch1,"0");
+ printf("0");
+ }
+ }else VW_Hlin(x+end+1,x+(scaninfo[qq].scan->next->start-scaninfo[qq].scan->start),y,3,gvar); // black = free//now green
+
+
+ if(gvar->video.VL_Started)
+ {
+ //if (scan->next && scan->next->start > end+1) free
+ xpos = 16;
+ ypos = 16;//(gvar->video.page[0].sh-(32));//8*4
+ }
+ else
+ {
+ //printf("%s\n", scratch1);
+ printf("%s", AARESET);
+ printf("\n");
+ }
+ while (!(scancode = gvar->in.inst->LastScan)){}
+
+ IN_ClearKey(scancode);
+ switch (scancode)
+ {
+ case sc_LeftArrow:
+ if(qq>0) qq--;
+ else qq = maxq;
+ break;
+ case sc_RightArrow:
+ if(qqvideo.VL_Started) IN_Ack(gvar);
+
+ gvar->video.BOFS = (byte __far *)temp;
+}
+
+//==========================================================================
+
+/*
+=====================
+=
+= MM_DumpData
+=
+=====================
+*/
+
+void MM_DumpData (global_game_variables_t *gvar)
+{
+ mmblocktype far *scan,far *best;
+ long lowest,oldlowest;
+ unsigned owner;
+ char 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 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)
+{
+ unsigned 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;
+}
+
+//==========================================================================
+
+
+/*
+======================
+=
+= MM_TotalFree
+=
+= Returns the total free space with purging
+=
+======================
+*/
+
+dword MM_TotalFree (global_game_variables_t *gvar)
+{
+ unsigned 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;
+}
+
+//==========================================================================
+
+/*
+=====================
+=
+= 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\n", 0xD3, 0xC4, gvar->mmi.EMSmem);
+ }
+ 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\n", 0xD3, 0xC4, gvar->mmi.XMSmem);
+ }
+ 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
+*/