188 lines
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188 lines
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<TITLE>Int 21/AX=4402h
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Int 21/AX=4402h - PC Tools 9 CPRLOW.EXE - GET CODE AND DATA ADDRESSES -
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AX = 4402h
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BX = file handle referencing device RECLOWLD
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DS:DX - buffer for address list (see #01505)
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CX ignored
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Return: CF clear if successful
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buffer filled
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CF set on error
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AX = error code (01h,05h,06h,0Dh) (see #01680 at AH=59h/BX=0000h)
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Format of CPRLOW address list:
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<h2>Int 21/AX=4402h
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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>PC Tools 9 CPRLOW.EXE - GET CODE AND DATA ADDRESSES</font></h3>
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<PRE>
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AX = 4402h
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BX = file handle referencing device "RECLOWLD"
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DS:DX -> buffer for address list <a href="rb-2843.htm#Table1505" tppabs="http://www.ctyme.com/intr/rb-2843.htm#Table1505">(see #01505)</a>
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CX ignored<br>
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<p><b>Return:</b><br>CF clear if successful
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buffer filled
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CF set on error
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AX = error code (01h,05h,06h,0Dh) <a href="javascript:if(confirm('http://www.ctyme.com/intr/rb-0000.htm \n\nThis file was not retrieved by Teleport Pro, because it was unavailable, or its retrieval was aborted, or the project was stopped too soon. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/intr/rb-0000.htm#Table0'" tppabs="http://www.ctyme.com/intr/rb-0000.htm#Table0"></a>(see #01680 at AH=59h/BX=0000h)
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<p>
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Format of CPRLOW address list:
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<a name=table1505></a>
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Offset Size Description (Table 01505)
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00h WORD segment of CPRLOW code
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02h WORD offset in code segment of ??? entry point
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(switches into protected mode)
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04h WORD offset in code segment of jump array <a href="rb-2843.htm#Table1506" tppabs="http://www.ctyme.com/intr/rb-2843.htm#Table1506">(see #01506)</a>
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06h WORD segment of copy of interrupt vector table at CPRLOW load time
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</PRE>
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<p><b>Note:</b>
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Neither the entry point nor the jump array is valid until after a
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CPR /LOAD, because CPR.EXE installs the code into CPRLOW at runtime.
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<PRE>
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<p>
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Format of CPRLOW jump array:
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<a name=table1506></a>
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Offset Size Description (Table 01506)
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00h 3 BYTEs initialize CPRLOW interrupt hooks
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03h 3 BYTEs reset timers and enable CPR (hotkey enable)
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06h 3 BYTEs disable CPR (hotkey disable)
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09h 3 BYTEs clear ??? flag, hotkey disable, and ???
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0Ch 3 BYTEs initialize delay loop counter (destroys AX,BX,CX,DX)
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0Fh 3 BYTEs disable CPR completely (commandline /DISABLE)
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12h 3 BYTEs enable ??? if CPR enabled by both cmdline and hotkey
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15h 3 BYTEs enable CPR (commandline /ENABLE)
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</PRE>
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<p>
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<b>Category: <a href="cat-037.htm" tppabs="http://www.ctyme.com/intr/cat-037.htm">
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Security</a>
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Int 21h</a>
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P</a>
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