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2024-02-19 00:23:35 -05:00

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Int 1A/AH=81h - PCMCIA Socket Services v1.00 - REGISTER STATUS CHANGE CALLBACK -
AH = 81h
DS:DX - callback routine (see #00657) or 0000h:0000h to disable
Return: CF clear if successful
AH destroyed
CF set on error
AH = error code (see #00656)
Note: the callback will be invoked on any socket changes whose notification
has not been disabled with the status change enable mask; it may be
invoked either while processing a hardware interrupt from the adapter
or while processing the following Socket Services request
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<h2>Int 1A/AH=81h
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<h3><font color=#C00040>PCMCIA Socket Services v1.00 - REGISTER STATUS CHANGE CALLBACK</font></h3>
<PRE>
AH = 81h
DS:DX -> callback routine <a href="rb-2320.htm#Table657" tppabs="http://www.ctyme.com/intr/rb-2320.htm#Table657">(see #00657)</a> or 0000h:0000h to disable<br>
<p><b>Return:</b><br>CF clear if successful
AH destroyed
CF set on error
AH = error code <a href="rb-2319.htm#Table656" tppabs="http://www.ctyme.com/intr/rb-2319.htm#Table656">(see #00656)</a>
</PRE>
<p><b>Note:</b>
The callback will be invoked on any socket changes whose notification
has not been disabled with the status change enable mask; it may be
invoked either while processing a hardware interrupt from the adapter
or while processing the following Socket Services request
<p><b>See Also:</b>
<a href="rb-2319.htm" tppabs="http://www.ctyme.com/intr/rb-2319.htm">AH=80h"PCMCIA"</a> - <a href="rb-2323.htm" tppabs="http://www.ctyme.com/intr/rb-2323.htm">AH=82h"PCMCIA"</a>
<PRE>
<p>
<a name=table657></a>
(Table 00657)
Values PCMCIA callback routine is invoked with:.
AL = adapter number.
BH = status change interrupt enable mask <a href="rb-2320.htm#Table658" tppabs="http://www.ctyme.com/intr/rb-2320.htm#Table658">(see #00658)</a>.
BL = socket number.
DH = current socket status <a href="rb-2320.htm#Table659" tppabs="http://www.ctyme.com/intr/rb-2320.htm#Table659">(see #00659)</a>.
DL = current card status <a href="rb-2320.htm#Table660" tppabs="http://www.ctyme.com/intr/rb-2320.htm#Table660">(see #00660)</a><br>
<p><b>Return:</b><br>All registers preserved
</PRE>
<p><b>Notes:</b>
The callback may be invoked during a hardware interrupt, and may not
call on Socket Services.
The callback will be invoked once for each socket with a status change
<PRE>
<p>
Bitfields for PCMCIA status change interrupt enable mask:
<a name=table658></a>
Bit(s) Description (Table 00658)
7 card detect change
6 ready change
5 battery warning change
4 battery dead change
3 insertion request
2 ejection request
1-0 reserved (0)
<p>
Bitfields for PCMCIA current socket status:
<a name=table659></a>
Bit(s) Description (Table 00659)
7 card changed
6 reserved (0)
5 card insertion complete
4 card ejection complete
3 card insertion request pending
2 card ejection request pending
1 card locked
0 reserved (0)
<p>
Bitfields for PCMCIA current card status:
<a name=table660></a>
Bit(s) Description (Table 00660)
7 card detect
6 ready
5 battery voltage detect 2 (battery warning)
4 battery voltage detect 1 (battery dead)
3-1 reserved (0)
0 write protected
</PRE>
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