80 lines
1.3 KiB
C
80 lines
1.3 KiB
C
|
|
/*++
|
|
|
|
Copyright (c) 1990, 1991 Microsoft Corporation
|
|
|
|
|
|
Module Name:
|
|
|
|
hwapm.c
|
|
|
|
Abstract:
|
|
|
|
Author:
|
|
|
|
|
|
Environment:
|
|
|
|
Real mode.
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
|
|
#include "hwdetect.h"
|
|
#include <string.h>
|
|
|
|
#if _PNP_POWER_
|
|
|
|
#include "apm.h"
|
|
|
|
VOID Int15 (PULONG, PULONG, PULONG, PULONG, PULONG);
|
|
|
|
BOOLEAN
|
|
HwGetApmSystemData(
|
|
IN PAPM_REGISTRY_INFO ApmEntry
|
|
)
|
|
{
|
|
ULONG RegEax, RegEbx, RegEcx, RegEdx, CyFlag;
|
|
|
|
//
|
|
// Perform APM installation check
|
|
//
|
|
|
|
RegEax = APM_INSTALLATION_CHECK;
|
|
RegEbx = APM_DEVICE_BIOS;
|
|
Int15 (&RegEax, &RegEbx, &RegEcx, &RegEdx, &CyFlag);
|
|
|
|
if (CyFlag ||
|
|
(RegEbx & 0xff) != 'M' ||
|
|
((RegEbx >> 8) & 0xff) != 'P') {
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
ApmEntry->ApmRevMajor = (UCHAR) (RegEax >> 8) & 0xff;
|
|
ApmEntry->ApmRevMinor = (UCHAR) RegEax & 0xff;
|
|
ApmEntry->ApmInstallFlags = (USHORT) RegEcx;
|
|
|
|
//
|
|
// Connect to 32 bit interface
|
|
//
|
|
|
|
RegEax = APM_PROTECT_MODE_16bit_CONNECT;
|
|
RegEbx = APM_DEVICE_BIOS;
|
|
Int15 (&RegEax, &RegEbx, &RegEcx, &RegEdx, &CyFlag);
|
|
|
|
if (CyFlag) {
|
|
return FALSE;
|
|
}
|
|
|
|
ApmEntry->Code16BitSegmentBase = (USHORT) RegEax;
|
|
ApmEntry->Code16BitOffset = (USHORT) RegEbx;
|
|
ApmEntry->Data16BitSegment = (USHORT) RegEcx;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#endif // _PNP_POWER_
|