1 files changed, 59 insertions, 0 deletions

diff --git a/private/mvdm/xms.486/xmsdisp.c b/private/mvdm/xms.486/xmsdisp.c
new file mode 100644
index 000000000..c044159ad
--- /dev/null
+++ b/private/mvdm/xms.486/xmsdisp.c
@@ -0,0 +1,59 @@
+/*
+ *  xmsdisp.c - SVC dispatch module for XMS
+ *
+ *  Modification History:
+ *
+ *  Sudeepb 15-May-1991 Created
+ *
+ *  williamh 25-Sept-1992 Added UMB support
+ */
+
+#include <xms.h>
+#include <xmsexp.h>
+#include <stdio.h>
+#include <softpc.h>
+#include <xmssvc.h>
+
+PFNSVC	apfnXMSSvc [] = {
+     xmsA20,		    // XMS_A20
+     xmsMoveBlock,	    // XMS_MOVEBLOCK
+     xmsAllocBlock,	    // XMS_ALLOCBLOCK
+     xmsFreeBlock,	    // XMS_FREEBLOCK
+     xmsSysPageSize,	    // XMS_SYSTEMPAGESIZE
+     xmsQueryExtMem,	    // XMS_EXTMEM
+     xmsInitUMB,	    // XMS_INITUMB
+     xmsRequestUMB,	    // XMS_REQUESTUMB
+     xmsReleaseUMB,         // XMS_RELEASEUMB
+     xmsNotifyHookI15,      // XMS_NOTIFYHOOKI15
+     xmsQueryFreeExtMem,    // XMS_QUERYEXTMEM
+     xmsReallocBlock        // XMS_REALLOCBLOCK
+};
+
+/* XMSDispatch - Dispatch SVC call to right handler.
+ *
+ * Entry - iSvc (SVC byte following SVCop)
+ *
+ * Exit  - None
+ *
+ * Note  - Some mechanism has to be worked out to let the emulator know
+ *	   about DOSKRNL code segment and size. Using these it will figure
+ *	   out whether SVCop (hlt for the moment) has to be passed to
+ *	   DEM or to be handled as normal invalid opcode.
+ */
+
+BOOL XMSDispatch (ULONG iSvc)
+{
+
+#if DBG
+
+    if (iSvc >= XMS_LASTSVC){
+	printf("XMS:Unimplemented SVC index %x\n",iSvc);
+	setCF(1);
+	return FALSE;
+    }
+
+#endif
+
+    (apfnXMSSvc [iSvc])();
+    return TRUE;
+}