1 /* Catacomb Apocalypse Source Code
2 * Copyright (C) 1993-2014 Flat Rock Software
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
27 #include "src/lib/16_head.h"
28 #include "src/lib/modex16.h"
29 //#include "src/lib/16_ca.h"
30 //++++mh #include "src/lib/16_in.h"
32 #ifdef __DEBUG__ // 1 == Debug/Dev ; 0 == Production/final
33 #define OUT_OF_MEM_MSG "MM_GetPtr: Out of memory!\nYou were short :%lu bytes"
35 #define OUT_OF_MEM_MSG "\npee\n"
39 #define SAVENEARHEAP 0//x200 // space to leave in data segment
40 #define SAVEFARHEAP 0x400 // space to leave in far heap
42 #define BUFFERSIZE 0x1000 // miscelanious, allways available buffer
52 #define EMS_STATUS 0x40
53 #define EMS_GETFRAME 0x41
54 #define EMS_GETPAGES 0x42
55 #define EMS_ALLOCPAGES 0x43
56 #define EMS_MAPPAGE 0x44
57 #define EMS_MAPXPAGE 0x50
58 #define EMS_FREEPAGES 0x45
59 #define EMS_VERSION 0x46
63 #define XMS_VERSION 0x00
65 #define XMS_ALLOCHMA 0x01
66 #define XMS_FREEHMA 0x02
68 #define XMS_GENABLEA20 0x03
69 #define XMS_GDISABLEA20 0x04
70 #define XMS_LENABLEA20 0x05
71 #define XMS_LDISABLEA20 0x06
72 #define XMS_QUERYA20 0x07
74 #define XMS_QUERYREE 0x08
75 #define XMS_ALLOC 0x09
79 #define XMS_UNLOCK 0x0D
80 #define XMS_GETINFO 0x0E
81 #define XMS_RESIZE 0x0F
83 #define XMS_ALLOCUMB 0x10
84 #define XMS_FREEUMB 0x11
86 //==========================================================================
90 dword nearheap,farheap,EMSmem,XMSmem,mainmem;
94 //==========================================================================
96 extern void (* beforesort) (void);
97 extern void (* aftersort) (void);
98 extern void (* XMSaddr) (void); // far pointer to XMS driver
100 //==========================================================================
103 =============================================================================
107 =============================================================================
110 #define LOCKBIT 0x80 // if set in attributes, block cannot be moved
111 #define PURGEBITS 3 // 0-3 level, 0= unpurgable, 3= purge first
112 #define PURGEMASK 0xfffc
113 #define BASEATTRIBUTES 0 // unlocked, non purgable
116 #define MAPPAGES 4//mm->EMSpagesmapped
118 typedef struct mmblockstruct
121 word start; dword length;
123 memptr *useptr; // pointer to the segment start
124 struct mmblockstruct huge *next;
131 boolean mmstarted, bombonerror, mmerror;
135 unsigned totalEMSpages,freeEMSpages,EMSpageframe,EMSpagesmapped,EMShandle;
137 word numUMBs,UMBbase[MAXUMBS];
138 //dword numUMBs,UMBbase[MAXUMBS];
139 mmblocktype huge mmblocks[MAXBLOCKS],huge *mmhead,huge *mmfree,huge *mmrover,huge *mmnew;
143 =============================================================================
147 =============================================================================
152 =============================================================================
156 =============================================================================
159 //==========================================================================
161 boolean MML_CheckForEMS(void);
162 byte MML_SetupEMS(mminfo_t *mm);
163 void MML_ShutdownEMS(mminfo_t *mm);
164 byte MM_MapEMS(mminfo_t *mm, mminfotype *mmi);
165 byte MM_MapXEMS(mminfo_t *mm, mminfotype *mmi);
166 boolean MML_CheckForXMS(mminfo_t *mm);
167 void MML_SetupXMS(mminfo_t *mm, mminfotype *mmi);
168 void MML_ShutdownXMS(mminfo_t *mm);
169 void MML_UseSpace(/*d*/word segstart, dword seglength, mminfo_t *mm);
170 void MML_ClearBlock(mminfo_t *mm);
172 void MM_Startup(mminfo_t *mm, mminfotype *mmi);
173 void MM_Shutdown(mminfo_t *mm);
175 void MM_GetPtr(memptr *baseptr,dword size, mminfo_t *mm, mminfotype *mmi);
176 void MM_FreePtr(memptr *baseptr, mminfo_t *mm);
177 void MM_SetPurge(memptr *baseptr, int purge, mminfo_t *mm);
178 void MM_SetLock(memptr *baseptr, boolean locked, mminfo_t *mm);
179 void MM_SortMem(mminfo_t *mm);
180 void MM_ShowMemory(/*page_t *page, */mminfo_t *mm);
181 void MM_DumpData(mminfo_t *mm);
182 dword MM_UnusedMemory(mminfo_t *mm);
183 dword MM_TotalFree(mminfo_t *mm);
184 void MM_Report(/*page_t *page, */mminfo_t *mm, mminfotype *mmi);
185 static void MM_EMSerr(byte *stri, byte err);
186 void MM_BombOnError(boolean bomb, mminfo_t *mm);
187 void MM_GetNewBlock(mminfo_t *mm);
188 void MM_FreeBlock(mmblocktype *x, mminfo_t *mm);
190 //==========================================================================