198 lines
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198 lines
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<TITLE>Int 2D
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Int 2D - AMIS v3.0+ - DETERMINE CHAINED INTERRUPTS -
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AL = 04h
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AH = multiplex number for program
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BL = interrupt number (except 2Dh)
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Return: AL = status
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00h not implemented (makes TSR non-compliant with specification)
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01h (obsolete) unable to determine
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02h (obsolete) interrupt hooked
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03h (obsolete) interrupt hooked, address returned
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DX:BX - TSR's interrupt BL handler
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04h list of hooked interrupts returned
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<h2>Int 2D
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<p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
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<h3><font color=#C00040>AMIS v3.0+ - DETERMINE CHAINED INTERRUPTS</font></h3>
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<PRE>
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AL = 04h
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AH = multiplex number for program
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BL = interrupt number (except 2Dh)<br>
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<p><b>Return:</b><br>AL = status
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00h not implemented (makes TSR non-compliant with specification)
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01h (obsolete) unable to determine
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02h (obsolete) interrupt hooked
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03h (obsolete) interrupt hooked, address returned
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DX:BX -> TSR's interrupt BL handler
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04h list of hooked interrupts returned
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DX:BX -> interrupt hook list <a href="rb-4219.htm#Table2571" tppabs="http://www.ctyme.com/intr/rb-4219.htm#Table2571">(see #02571)</a>
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FFh interrupt not hooked
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</PRE>
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<p><b>Notes:</b>
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BL is ignored if the TSR returns AL=04h; in that case, the caller
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needs to scan the return list rather than making additional calls
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to this function. If the return is not 00h or 04h, then the caller
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must cycle through the remaining interrupt numbers it wishes to
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check..
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Return values 01h through 03h may not be used by AMIS v3.6-compliant
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programs; they are included here solely for compatibility with
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version 3.3, though they were probably never used in any
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implementation.
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For return values 01h through 03h, since INT 2D is known to be hooked,
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the resident code need not test for BL=2Dh (to minimize its size),
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and the return value is therefore undefined in that case..
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This function is not valid unless a program is installed on the
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specified multiplex number; use INT 2D/AL=00h to check
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<p><b>See Also:</b>
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INT 2D/AL=00h - INT 2D/AL=01h - INT 2D/AL=02h - INT 2D/AL=03h - INT 2D/AL=05h
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<p><b>See Also:</b>
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INT 2D/AL=06h
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<PRE>
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<p>
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Format of AMIS interrupt hook list [array]:
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<a name=table2571></a>
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Offset Size Description (Table 02571)
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00h BYTE interrupt number (last entry in array is 2Dh)
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01h WORD offset within hook list's segment of the interrupt handler
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this will point at the initial short jump of the interrupt
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sharing protocol header <a href="rb-4214.htm#Table2568" tppabs="http://www.ctyme.com/intr/rb-4214.htm#Table2568">(see #02568)</a>
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</PRE>
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<p><b>See Also:</b>
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#02572
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<p>
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<b>Category: <a href="cat-042.htm" tppabs="http://www.ctyme.com/intr/cat-042.htm">
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TSR Libraries</a>
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- <a href="int-2d-1.htm" tppabs="http://www.ctyme.com/intr/int-2D.htm">
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Int 2Dh</a>
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A</a>
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