210 lines
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210 lines
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<TITLE>Int 2C/AX=0009h
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<META NAME="Description" CONTENT="
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Int 2C/AX=0009h - Cloaking - SET PASSALONG ADDRESS -
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AX = 0009h
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DX:EBX = new value for passalong address (see #02558)
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Return: CF clear
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Notes: when an INT 2C instruction is executed in V86 mode, the Cloaking host
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calls the passalong address. The handler should check whether the
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upcall is of interest to it, and if not it should jump to the old
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passalong address (retrieved with AX=0008h before the handler was
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installed). The final handler should return with CF clear to cause
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the interrupt to be reflected back to V86 mode if none of the
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passalong handlers is triggered
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<h2>Int 2C/AX=0009h
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<h3><font color=#C00040>Cloaking - SET PASSALONG ADDRESS</font></h3>
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<PRE>
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AX = 0009h
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DX:EBX = new value for passalong address <a href="rb-4180.htm#Table2558" tppabs="http://www.ctyme.com/intr/rb-4180.htm#Table2558">(see #02558)</a><br>
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<p><b>Return:</b><br>CF clear
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</PRE>
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<p><b>Notes:</b>
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When an INT 2C instruction is executed in V86 mode, the Cloaking host
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calls the passalong address. The handler should check whether the
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upcall is of interest to it, and if not it should jump to the old
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passalong address (retrieved with AX=0008h before the handler was
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installed). The final handler should return with CF clear to cause
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the interrupt to be reflected back to V86 mode if none of the
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passalong handlers is triggered.
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This function was first introduced with RM386 (RAM-MAN/386) v6.00
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<p><b>See Also:</b>
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<a href="rb-4179.htm" tppabs="http://www.ctyme.com/intr/rb-4179.htm">AX=0008h</a> - <a href="rb-4204.htm" tppabs="http://www.ctyme.com/intr/rb-4204.htm">AX=002Dh</a> - <a href="rb-4170.htm" tppabs="http://www.ctyme.com/intr/rb-4170.htm">INT 2C"PASSALONG CHAIN"</a>
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<PRE>
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<p>
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<a name=table2558></a>
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(Table 02558)
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Values Cloaking passalong address is called with:.
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EAX = CS:IP of byte following INT 2C instruction invoking passalong.
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SS:EBX -> caller registers <a href="rb-4180.htm#Table2559" tppabs="http://www.ctyme.com/intr/rb-4180.htm#Table2559">(see #02559)</a>.
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CF clear.
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Others undefined<br>
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<p><b>Return:</b><br>CF clear: pass along to V86-mode INT 2C handler.
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<p><b>CF set:</b><br>Return immediately to V86 mode
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<p>
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Format of Cloaking caller registers:
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<a name=table2559></a>
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Offset Size Description (Table 02559)
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00h DWORD EDI
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04h DWORD ESI
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08h DWORD EBP
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0Ch DWORD reserved (ESP from PUSHAD instruction)
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10h DWORD EBX
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14h DWORD EDX
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18h DWORD ECX
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1Ch DWORD EAX
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20h DWORD error code
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24h DWORD EIP
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28h WORD CS
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2Ah WORD padding
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2Ch DWORD EFLAGS
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30h DWORD ESP
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34h WORD SS
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36h WORD padding
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--remainder not available if protected-mode ring3 trap---
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38h WORD ES
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3Ah WORD padding
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3Ch WORD DS
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3Eh WORD padding
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40h WORD FS
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42h WORD padding
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44h WORD GS
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46h WORD padding
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</PRE>
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<p>
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<b>Category: <a href="cat-024.htm" tppabs="http://www.ctyme.com/intr/cat-024.htm">
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Memory Management</a>
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- <a href="int-2c-1.htm" tppabs="http://www.ctyme.com/intr/int-2C.htm">
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Int 2Ch</a>
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- <a href="alpha-c.htm" tppabs="http://www.ctyme.com/intr/alpha-c.htm">
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C</a>
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