byte\r
PML_MapEMS(word logical, byte physical, global_game_variables_t *gvar)\r
{\r
- byte str[160];\r
+ byte err, str[160];\r
unsigned EMShandle;\r
- byte err;\r
- boolean errorflag=false;\r
int i;\r
+\r
+ boolean errorflag=false;\r
EMShandle=gvar->pm.emm.EMSHandle;\r
\r
__asm {\r
PML_StartupEMS(global_game_variables_t *gvar)\r
{\r
int i;\r
- long size;\r
- byte str[64];\r
- byte err;\r
+ //long size;\r
+ byte err, str[64];\r
\r
- boolean errorflag=0;\r
+ boolean errorflag=false;\r
static char emmname[] = "EMMXXXX0"; //fix by andrius4669\r
unsigned int EMSVer = 0;\r
unsigned totalEMSpages,freeEMSpages,EMSPageFrame,EMSHandle,EMSAvail;\r
mov dx,OFFSET emmname //fix by andrius4669\r
mov ax,0x3d00\r
int EMS_INT // try to open EMMXXXX0 device\r
- jc erroreu\r
+ jc error1\r
\r
mov bx,ax\r
mov ax,0x4400\r
\r
int EMS_INT // get device info\r
- jc erroreu\r
+ jc error1\r
\r
and dx,0x80\r
- jz erroreu\r
+ jz error1\r
\r
mov ax,0x4407\r
\r
int EMS_INT // get status\r
- jc erroreu\r
+ jc error1\r
or al,al\r
- jz erroreu\r
+ jz error1\r
\r
mov ah,0x3e\r
int EMS_INT // close handle\r
- jc erroreu\r
+ jc error1\r
\r
mov ah,EMS_STATUS\r
int EMS_INT\r
- jc erroreu // make sure EMS hardware is present\r
+ jc error1 // make sure EMS hardware is present\r
\r
mov ah,EMS_VERSION\r
int EMS_INT // only work on EMS 3.2 or greater (silly, but...)\r
or ah,ah\r
- jnz erroreu\r
+ jnz error1\r
mov [EMSVer],ax // set EMSVer\r
cmp al,0x32 // only work on ems 3.2 or greater\r
- jb erroreu\r
+ jb error1\r
\r
mov ah,EMS_GETFRAME\r
int EMS_INT // find the page frame address\r
or ah,ah\r
- jnz erroreu\r
+ jnz error1\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 erroreu\r
+ jnz error1\r
or bx,bx\r
jz noEMS // no EMS at all to allocate\r
cmp bx,2\r
mov [totalEMSpages],dx\r
mov [freeEMSpages],bx\r
mov [EMSAvail],bx\r
- jmp Endeu\r
+ jmp End1\r
#ifdef __BORLANDC__\r
}\r
#endif\r
- erroreu:\r
+ error1:\r
#ifdef __BORLANDC__\r
__asm {\r
#endif\r
mov err,ah\r
mov errorflag,1\r
- jmp Endeu\r
+ jmp End1\r
#ifdef __BORLANDC__\r
}\r
#endif\r
- noEMS:\r
- Endeu:\r
+noEMS:\r
+End1:\r
#ifdef __WATCOMC__\r
}\r
#endif\r
*/\r
__asm {\r
mov ah,EMS_ALLOCPAGES\r
- mov bx,[EMSAvail]\r
+ mov bx,[EMSAvail];\r
int EMS_INT\r
or ah,ah\r
- jnz erroreuu\r
+ jnz error2\r
mov [EMSHandle],dx\r
- jmp Endeuu\r
+ jmp End2\r
#ifdef __BORLANDC__\r
}\r
#endif\r
- erroreuu:\r
+ error2:\r
#ifdef __BORLANDC__\r
__asm {\r
#endif\r
mov err,ah\r
mov errorflag,1\r
- jmp Endeuu\r
+ jmp End2\r
#ifdef __BORLANDC__\r
}\r
#endif\r
- Endeuu:\r
+End2:\r
#ifdef __WATCOMC__\r
}\r
#endif\r
\r
if(errorflag==false)\r
{\r
- //gvar->pm.emm.EMSAvail = EMSAvail;\r
- //gvar->mmi.EMSmem = gvar->pm.emm.EMSAvail * (dword)EMSPageSize;\r
gvar->mmi.EMSmem = EMSAvail * (dword)EMSPageSize;\r
\r
// Initialize EMS mapping cache\r
\r
gvar->pm.emm.EMSPresent = true; // We have EMS\r
gvar->pm.emm.EMSPageFrame = EMSPageFrame;\r
+ gvar->pm.emm.EMSAvail = EMSAvail;\r
gvar->pm.emm.EMSVer = EMSVer;\r
gvar->pm.emm.EMSHandle = EMSHandle;\r
gvar->pm.emm.freeEMSpages = freeEMSpages;\r
PML_ShutdownEMS(global_game_variables_t *gvar)\r
{\r
word EMSHandle;\r
- byte err;\r
- byte str[64];\r
- boolean errorflag=false;\r
+ byte err,str[64];\r
\r
+ boolean errorflag=false;\r
EMSHandle=gvar->pm.emm.EMSHandle;\r
\r
if (gvar->pm.emm.EMSPresent)\r
PML_StartupXMS(global_game_variables_t *gvar)\r
{\r
boolean errorflag;\r
- word XMSAvail, XMSHandle;\r
+ byte err;\r
+ word /*XMSAvail,*/ XMSHandle;\r
+\r
+ word XMSAvail1, XMSAvail2, XMSAvail3, XMSAvail4;\r
+\r
+ word e=0;\r
errorflag=gvar->pm.xmm.XMSPresent = false; // Assume failure\r
gvar->pm.xmm.XMSAvail = gvar->mmi.XMSmem = 0;\r
\r
mov ax,0x4300\r
int XMS_INT // Check for presence of XMS driver\r
cmp al,0x80\r
- jne errorxu\r
+ jne error1\r
+ mov e,1\r
\r
mov ax,0x4310\r
int XMS_INT // Get address of XMS driver\r
mov [WORD PTR XMSDriver],bx\r
mov [WORD PTR XMSDriver+2],es // function pointer to XMS driver\r
+ mov e,2\r
\r
//XMS_CALL(XMS_QUERYFREE); // Find out how much XMS is available\r
- mov ah,XMS_QUERYFREE\r
+ mov ah,XMS_QUERYFREE // Find out how much XMS is available\r
call [DWORD PTR XMSDriver]\r
- mov [XMSAvail],ax\r
- or ax,ax // AJR: bugfix 10/8/92\r
- jz errorxu\r
- jmp Endxu\r
+ //mov [XMSAvail],ax\r
+ //mov XMSAvail1,ax\r
+ //mov ax,XMSAvail2\r
+ //mov [XMSAvail3],ax\r
+ mov ax,[XMSAvail4]\r
+ mov err,bl\r
+ cmp ax,0 // AJR: bugfix 10/8/92\r
+ je error1\r
+ mov e,3\r
+ jmp End1\r
#ifdef __BORLANDC__\r
}\r
#endif\r
- errorxu:\r
+ error1:\r
#ifdef __BORLANDC__\r
__asm {\r
#endif\r
- //mov err,ah\r
+ mov err,bl\r
mov errorflag,1\r
- jmp Endxu\r
+ jmp End1\r
#ifdef __BORLANDC__\r
}\r
#endif\r
- Endxu:\r
+End1:\r
#ifdef __WATCOMC__\r
}\r
#endif\r
- XMSAvail &= ~(PMPageSizeKB - 1); // Round off to nearest page size\r
- if (XMSAvail < (PMPageSizeKB * 2)){ // Need at least 2 pages\r
- printf("PISS! %u\n", XMSAvail);\r
+\r
+// XMS_CALL(XMS_QUERYFREE); // Find out how much XMS is available\r
+// XMSAvail = _AX;\r
+// if (!_AX) // AJR: bugfix 10/8/92\r
+// goto error;\r
+\r
+ printf(" XMSAvail=%u e=%u\n", XMSAvail4, e);\r
+ //printf(" %u %u %u %u\n", XMSAvail1, XMSAvail2, XMSAvail3, XMSAvail4);\r
+ XMSAvail4 &= ~(PMPageSizeKB - 1); // Round off to nearest page size\r
+ if (XMSAvail4 < (PMPageSizeKB * 2)){ // Need at least 2 pages\r
+ printf("PISS! %u\n", XMSAvail4);\r
goto error;\r
}\r
\r
__asm {\r
- mov dx,[XMSAvail]\r
+ mov dx,XMSAvail4\r
//XMS_CALL(XMS_ALLOC); // And do the allocation\r
mov ah,XMS_ALLOC\r
- call [WORD PTR XMSDriver]\r
- mov [XMSHandle],dx\r
+ call [DWORD PTR XMSDriver]\r
+ mov XMSHandle,dx\r
or ax,ax // AJR: bugfix 10/8/92\r
- jz errorxuu\r
- jmp Endxuu\r
+ jz error2\r
+ mov e,4\r
+ jmp End2\r
#ifdef __BORLANDC__\r
- }\r
+ }\r
#endif\r
- errorxuu:\r
+ error2:\r
#ifdef __BORLANDC__\r
__asm {\r
#endif\r
- //mov err,ah\r
- mov [XMSAvail],0\r
+ mov err,bl\r
mov errorflag,1\r
- jmp Endxuu\r
+ jmp End2\r
#ifdef __BORLANDC__\r
}\r
#endif\r
- Endxuu:\r
+End2:\r
#ifdef __WATCOMC__\r
}\r
#endif\r
\r
if(errorflag==false)\r
{\r
- gvar->pm.xmm.XMSAvail = XMSAvail;\r
- gvar->mmi.XMSmem += gvar->pm.xmm.XMSAvail * (dword)1024;\r
+ gvar->mmi.XMSmem = XMSAvail4 * (dword)1024;\r
+ gvar->pm.xmm.XMSAvail = XMSAvail4;\r
gvar->pm.xmm.XMSHandle = XMSHandle;\r
\r
gvar->pm.xmm.XMSPresent = true;\r
- printf(" %u %u %u\n", gvar->mmi.XMSmem, gvar->pm.xmm.XMSAvail, XMSAvail);\r
+ printf(" %u %u %u\n", gvar->mmi.XMSmem, gvar->pm.xmm.XMSAvail, XMSAvail4);\r
getch();\r
- }else printf(" errorflag\n");\r
+ }else printf(" %u errorflag=%02X\n", XMSAvail4, err);\r
error:\r
return(gvar->pm.xmm.XMSPresent);\r
+/*\r
+ gvar->pm.xmm.XMSPresent = false; // Assume failure\r
+ gvar->pm.xmm.XMSAvail = 0;\r
+\r
+__asm mov ax,0x4300\r
+__asm int XMS_INT // Check for presence of XMS driver\r
+ if (_AL != 0x80)\r
+ goto error;\r
+\r
+\r
+__asm mov ax,0x4310\r
+__asm int XMS_INT // Get address of XMS driver\r
+__asm mov [WORD PTR XMSDriver],bx\r
+__asm mov [WORD PTR XMSDriver+2],es // function pointer to XMS driver\r
+\r
+ XMS_CALL(XMS_QUERYFREE); // Find out how much XMS is available\r
+ gvar->pm.xmm.XMSAvail = _AX;\r
+ if (!_AX) // AJR: bugfix 10/8/92\r
+ goto error;\r
+\r
+ gvar->pm.xmm.XMSAvail &= ~(PMPageSizeKB - 1); // Round off to nearest page size\r
+ if (gvar->pm.xmm.XMSAvail < (PMPageSizeKB * 2)) // Need at least 2 pages\r
+ goto error;\r
+\r
+ _DX = gvar->pm.xmm.XMSAvail;\r
+ XMS_CALL(XMS_ALLOC); // And do the allocation\r
+ gvar->pm.xmm.XMSHandle = _DX;\r
+\r
+ if (!_AX) // AJR: bugfix 10/8/92\r
+ {\r
+ gvar->pm.xmm.XMSAvail = 0;\r
+ goto error;\r
+ }\r
+\r
+ gvar->mmi.XMSmem = gvar->pm.xmm.XMSAvail * 1024;\r
+\r
+ gvar->pm.xmm.XMSPresent = true;\r
+error:\r
+ printf("XMSstart %u %u\n", gvar->mmi.XMSmem, gvar->pm.xmm.XMSAvail);\r
+ return(gvar->pm.xmm.XMSPresent);*/\r
}\r
\r
//\r
mov dx,[XMSHandle]\r
//XMS_CALL(XMS_FREE);\r
mov ah,XMS_FREE\r
- call [WORD PTR XMSDriver]\r
+ call [DWORD PTR XMSDriver]\r
or bl,bl\r
jz errorxs\r
jmp Endxs\r
\r
//0000+=+=PML_OpenPageFile(gvar);\r
\r
- if (!noems)\r
+ if (!noems && MML_CheckForEMS())\r
PML_StartupEMS(gvar);\r
- if (!noxms)\r
+ if (!noxms && MML_CheckForXMS())\r
PML_StartupXMS(gvar);\r
\r
if (!nomain && !gvar->pm.emm.EMSPresent)\r
void\r
PM_Shutdown(global_game_variables_t *gvar)\r
{\r
- PML_ShutdownXMS(gvar);\r
- PML_ShutdownEMS(gvar);\r
+ if(MML_CheckForXMS()) PML_ShutdownXMS(gvar);\r
+ if(MML_CheckForEMS()) PML_ShutdownEMS(gvar);\r
\r
if (!gvar->pm.PMStarted)\r
return;\r
projects / 16.git / blobdiff