60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
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/*
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* xmsdisp.c - SVC dispatch module for XMS
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*
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* Modification History:
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*
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* Sudeepb 15-May-1991 Created
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*
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* williamh 25-Sept-1992 Added UMB support
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*/
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#include <xms.h>
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#include <xmsexp.h>
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#include <stdio.h>
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#include <softpc.h>
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#include <xmssvc.h>
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PFNSVC apfnXMSSvc [] = {
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xmsA20, // XMS_A20
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xmsMoveBlock, // XMS_MOVEBLOCK
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xmsAllocBlock, // XMS_ALLOCBLOCK
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xmsFreeBlock, // XMS_FREEBLOCK
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xmsSysPageSize, // XMS_SYSTEMPAGESIZE
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xmsQueryExtMem, // XMS_EXTMEM
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xmsInitUMB, // XMS_INITUMB
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xmsRequestUMB, // XMS_REQUESTUMB
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xmsReleaseUMB, // XMS_RELEASEUMB
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xmsNotifyHookI15, // XMS_NOTIFYHOOKI15
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xmsQueryFreeExtMem, // XMS_QUERYEXTMEM
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xmsReallocBlock // XMS_REALLOCBLOCK
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};
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/* XMSDispatch - Dispatch SVC call to right handler.
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*
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* Entry - iSvc (SVC byte following SVCop)
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*
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* Exit - None
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*
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* Note - Some mechanism has to be worked out to let the emulator know
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* about DOSKRNL code segment and size. Using these it will figure
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* out whether SVCop (hlt for the moment) has to be passed to
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* DEM or to be handled as normal invalid opcode.
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*/
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BOOL XMSDispatch (ULONG iSvc)
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{
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#if DBG
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if (iSvc >= XMS_LASTSVC){
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printf("XMS:Unimplemented SVC index %x\n",iSvc);
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setCF(1);
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return FALSE;
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}
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#endif
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(apfnXMSSvc [iSvc])();
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return TRUE;
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}
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