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change callback code; get rid of several calls to DOSBOX_RunMachine()

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2677
This commit is contained in:
Sebastian Strohhäcker 2006-07-24 19:06:55 +00:00
parent fcd1a96808
commit 6215071ebc
8 changed files with 527 additions and 328 deletions
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18
src/ints/ems.cpp
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@ -16,7 +16,7 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* $Id: ems.cpp,v 1.51 2006-04-22 15:25:45 c2woody Exp $ */
/* $Id: ems.cpp,v 1.52 2006-07-24 19:06:55 c2woody Exp $ */
#include <string.h>
#include <stdlib.h>
@ -721,8 +721,8 @@ static Bitu INT67_Handler(void) {
reg_di+=0x400; // advance pointer by 0x100*4
/* Set up three descriptor table entries */
Bit32u cbseg_low=(CB_BASE&0xffff)<<16;
Bit32u cbseg_high=(CB_BASE&0x1f0000)>>16;
Bit32u cbseg_low=(CALLBACK_GetBase()&0xffff)<<16;
Bit32u cbseg_high=(CALLBACK_GetBase()&0x1f0000)>>16;
/* Descriptor 1 (code segment, callback segment) */
real_writed(SegValue(ds),reg_si+0x00,0x0000ffff|cbseg_low);
real_writed(SegValue(ds),reg_si+0x04,0x00009a00|cbseg_high);
@ -1161,21 +1161,23 @@ public:
int67.Install(&INT67_Handler,CB_IRET,"Int 67 ems");
Bit16u call_int67=int67.Get_callback();
/* Register the ems device */
/* Register the ems device */
//TODO MAYBE put it in the class.
DOS_Device * newdev = new device_EMM();
DOS_AddDevice(newdev);
/* Add a little hack so it appears that there is an actual ems device installed */
/* Add a little hack so it appears that there is an actual ems device installed */
char * emsname="EMMXXXX0";
if(!emsnameseg) emsnameseg=DOS_GetMemory(2); //We have 32 bytes
MEM_BlockWrite(PhysMake(emsnameseg,0xa),emsname,strlen(emsname)+1);
/* Copy the callback piece into the beginning, and set the interrupt vector to it*/
/* Copy the callback piece into the beginning, and set the interrupt vector to it*/
char buf[16];
MEM_BlockRead(PhysMake(CB_SEG,call_int67<<4),buf,0xa);
MEM_BlockRead(CALLBACK_PhysPointer(call_int67),buf,0xa);
MEM_BlockWrite(PhysMake(emsnameseg,0),buf,0xa);
RealSetVec(0x67,RealMake(emsnameseg,0),old67_pointer);
/* Clear handle and page tables */
/* Clear handle and page tables */
Bitu i;
for (i=0;i<EMM_MAX_HANDLES;i++) {
emm_handles[i].mem=0;