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ID_MM.H
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ID_MM.H
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// ID_MM.H
#ifndef __ID_CA__
#define __ID_CA__
#define SAVENEARHEAP 0x400 // space to leave in data segment
#define SAVEFARHEAP 0 // space to leave in far heap
#define BUFFERSIZE 0x1000 // miscelanious, allways available buffer
#define MAXBLOCKS 600
//--------
#define EMS_INT 0x67
#define EMS_STATUS 0x40
#define EMS_GETFRAME 0x41
#define EMS_GETPAGES 0x42
#define EMS_ALLOCPAGES 0x43
#define EMS_MAPPAGE 0x44
#define EMS_FREEPAGES 0x45
#define EMS_VERSION 0x46
//--------
#define XMS_INT 0x2f
#define XMS_CALL(v) _AH = (v);\
asm call [DWORD PTR XMSDriver]
#define XMS_VERSION 0x00
#define XMS_ALLOCHMA 0x01
#define XMS_FREEHMA 0x02
#define XMS_GENABLEA20 0x03
#define XMS_GDISABLEA20 0x04
#define XMS_LENABLEA20 0x05
#define XMS_LDISABLEA20 0x06
#define XMS_QUERYA20 0x07
#define XMS_QUERYFREE 0x08
#define XMS_ALLOC 0x09
#define XMS_FREE 0x0A
#define XMS_MOVE 0x0B
#define XMS_LOCK 0x0C
#define XMS_UNLOCK 0x0D
#define XMS_GETINFO 0x0E
#define XMS_RESIZE 0x0F
#define XMS_ALLOCUMB 0x10
#define XMS_FREEUMB 0x11
//==========================================================================
typedef void _seg * memptr;
typedef struct
{
long nearheap,farheap,EMSmem,XMSmem,mainmem;
} mminfotype;
//==========================================================================
extern unsigned blockcount;
extern mminfotype mminfo;
extern memptr bufferseg;
extern boolean mmerror;
//unsigned __SEGS_AVAILABLE__;
unsigned long __PUR_MEM_AVAIL__;
unsigned long __FREE_MEM_AVAIL__;
extern void (* beforesort) (void);
extern void (* aftersort) (void);
extern char far *gp_fartext;
//==========================================================================
void MM_Startup (void);
void MM_Shutdown (void);
void MM_MapEMS (void);
void MM_GetPtr (memptr *baseptr,unsigned long size);
void MM_FreePtr (memptr *baseptr);
void MM_SetPurge (memptr *baseptr, int purge);
void MM_SetLock (memptr *baseptr, boolean locked);
void MM_SortMem (void);
void MM_ShowMemory (void);
long MM_UnusedMemory (void);
long MM_TotalFree (void);
long MM_LargestAvail (void);
void MM_BombOnError (boolean bomb);
void MML_UseSpace (unsigned segstart, unsigned seglength);
#define LOCKBIT 0x80 // if set in attributes, block cannot be moved
#if IN_DEVELOPMENT
#define GETNEWBLOCK {if(!mmfree)MML_ClearBlock();mmnew=mmfree;mmfree=mmfree->next;blockcount++;}
#else
#define GETNEWBLOCK {if(!mmfree)MML_ClearBlock();mmnew=mmfree;mmfree=mmfree->next;}
#endif
typedef struct mmblockstruct
{
unsigned start,length;
unsigned attributes;
memptr *useptr; // pointer to the segment start
struct mmblockstruct far *next;
} mmblocktype;
#endif