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<TITLE>Int 15/AX=5300h
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Int 15/AX=5300h - Advanced Power Management v1.0+ - INSTALLATION CHECK -
AX = 5300h
BX = device ID of system BIOS (0000h)
Return: CF clear if successful
AH = major version (BCD)
AL = minor version (BCD)
BX = 504Dh (PM)
CX = flags (see #00472)
CF set on error
AH = error code (06h,09h,86h) (see #00473)
BUG: early versions of the Award Modular BIOS with built-in APM support
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<h2>Int 15/AX=5300h
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<h3><font color=#C00040>Advanced Power Management v1.0+ - INSTALLATION CHECK</font></h3>
<PRE>
AX = 5300h
BX = device ID of system BIOS (0000h)<br>
<p><b>Return:</b><br>CF clear if successful
AH = major version (BCD)
AL = minor version (BCD)
BX = 504Dh ("PM")
CX = flags <a href="rb-1394.htm#Table472" tppabs="http://www.ctyme.com/intr/rb-1394.htm#Table472">(see #00472)</a>
CF set on error
AH = error code (06h,09h,86h) <a href="rb-1394.htm#Table473" tppabs="http://www.ctyme.com/intr/rb-1394.htm#Table473">(see #00473)</a>
</PRE>
<p><b>BUG:</b>
Early versions of the Award Modular BIOS with built-in APM support
reportedly do not set BX on return
<PRE>
<p>
Bitfields for APM flags:
<a name=table472></a>
Bit(s) Description (Table 00472)
0 16-bit protected mode interface supported
1 32-bit protected mode interface supported
2 CPU idle call reduces processor speed
3 BIOS power management disabled
4 BIOS power management disengaged (APM v1.1)
5-7 reserved
<p>
<a name=table473></a>
(Table 00473)
Values for APM error code:
01h power management functionality disabled
02h interface connection already in effect
03h interface not connected
04h real-mode interface not connected
05h 16-bit protected-mode interface already connected
06h 16-bit protected-mode interface not supported
07h 32-bit protected-mode interface already connected
08h 32-bit protected-mode interface not supported
09h unrecognized device ID
0Ah invalid parameter value in CX
0Bh (APM v1.1) interface not engaged
0Ch (APM v1.2) function not supported
0Dh (APM v1.2) Resume Timer disabled
0Eh-1Fh reserved for other interface and general errors
20h-3Fh reserved for CPU errors
40h-5Fh reserved for device errors
60h can't enter requested state
61h-7Fh reserved for other system errors
80h no power management events pending
81h-85h reserved for other power management event errors
86h APM not present
87h-9Fh reserved for other power management event errors
A0h-FEh reserved
FFh undefined
</PRE>
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Int 15h</a>
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