85 lines
1.2 KiB
C
85 lines
1.2 KiB
C
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/* xmsmisc.c - Misc. Support Functions for himem.
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*
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* xmsSysPageSize
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* xmsQueryExtMem
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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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#include "xms.h"
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#include <xmssvc.h>
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#include <softpc.h>
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extern void UpdateKbdInt15(WORD Seg,WORD Off);
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/* xmsSysPageSize - Get the System Page size.
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*
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*
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* Entry - None
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*
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* Exit
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* SUCCESS
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* Client (AX) = Page Size in bytes
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*
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* FAILURE
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* Not Valid
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*/
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VOID xmsSysPageSize (VOID)
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{
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SYSTEM_INFO SysInfo;
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GetSystemInfo(&SysInfo);
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setAX((USHORT)SysInfo.dwPageSize);
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return;
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}
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/* xmsQueryExtMem - Get the extended memory for the vdm
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*
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*
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* Entry - None
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*
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* Exit
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* SUCCESS
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* Client (AX) = Extended Memory in K
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*
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* FAILURE
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* Not Valid
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*/
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VOID xmsQueryExtMem (VOID)
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{
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setAX((USHORT)(xmsMemorySize));
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return;
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}
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/* xmsNotifyHookI15 - Informs softpc that someone is hooking I15
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* - also returns the extended memory for the vdm
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*
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*
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* Entry - Client (CS:AX) seg:off of new I15 vector
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*
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* Exit
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* SUCCESS
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* Client (CX) = Extended Memory in K
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*
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* FAILURE
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* Not Valid
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*/
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VOID xmsNotifyHookI15 (VOID)
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{
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UpdateKbdInt15(getCS(), getAX());
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setCX((USHORT)(xmsMemorySize));
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return;
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}
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