208 lines
13 KiB
HTML
208 lines
13 KiB
HTML
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<TITLE>Int 21/AX=4402h
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<META NAME="Description" CONTENT="
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Int 21/AX=4402h - PenDOS PENDEV.SYS - GET ENTRY POINTS -
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AX = 4402h
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BX = file handle for device $$PENDOS or $$PD_REG
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CX = size of buffer (4 for $$PENDOS and a 4,8,12, or 16 for $$PD_REG)
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DS:DX - buffer for entry point record (see #01500)
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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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Program: A limited version of PenDOS by Communication Intelligence Corporation,
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which provides pen capability to keyboard-based programs, is bundled
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">
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<h2>Int 21/AX=4402h
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</h2>
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<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
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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>PenDOS PENDEV.SYS - GET ENTRY POINTS</font></h3>
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<PRE>
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AX = 4402h
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BX = file handle for device "$$PENDOS" or "$$PD_REG"
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CX = size of buffer (4 for $$PENDOS and a 4,8,12, or 16 for $$PD_REG)
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DS:DX -> buffer for entry point record <a href="rb-2841.htm#Table1500" tppabs="http://www.ctyme.com/intr/rb-2841.htm#Table1500">(see #01500)</a><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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</PRE>
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<p><b>Program:</b>
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A limited version of PenDOS by Communication Intelligence Corporation,
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which provides pen capability to keyboard-based programs, is bundled
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with IBM DOS 6.1
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<p><b>See Also:</b>
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<a href="rb-2841.htm" tppabs="http://www.ctyme.com/intr/rb-2841.htm">AX=4403h"PENDEV.SYS"</a>
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<PRE>
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<p>
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Format of PENDEV.SYS entry point record:
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<a name=table1500></a>
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Offset Size Description (Table 01500)
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00h DWORD -> array of jumps
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04h WORD offset of function to retrieve entry point <a href="rb-2841.htm#Table1501" tppabs="http://www.ctyme.com/intr/rb-2841.htm#Table1501">(see #01501)</a>
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06h 2 BYTEs signature "Pe"
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08h WORD offset of function to set entry point <a href="rb-2841.htm#Table1502" tppabs="http://www.ctyme.com/intr/rb-2841.htm#Table1502">(see #01502)</a>
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0Ah 2 BYTEs signature "nD"
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0Ch WORD offset of function to clear entry point <a href="rb-2841.htm#Table1503" tppabs="http://www.ctyme.com/intr/rb-2841.htm#Table1503">(see #01503)</a>
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0Eh WORD signature "OS"
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<p>
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<a name=table1501></a>
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(Table 01501)
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Call PENDEV.SYS function to retrieve entry point with:.
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AX = index of entry point (0-9)<br>
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<p><b>Return:</b><br>CF clear if successful
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DX:AX -> desired entry point
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CF set on error (AX out of range)
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<p>
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<a name=table1502></a>
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(Table 01502)
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Call PENDEV.SYS function to set entry point with:
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AX = index of entry point (0-9)
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DX:SI -> new handler<br>
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<p><b>Return:</b><br>CF clear if successful
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CF set on error (AX out of range)
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<p>
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<a name=table1503></a>
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(Table 01503)
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Call PENDEV.SYS function to clear entry point with:
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AX = index of entry point (0-9)<br>
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<p><b>Return:</b><br>CF clear if successful
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CF set on error (AX out of range)
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</PRE>
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<p><b>Note:</b>
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Resets the jump at the specified entry point to its default target,
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which simply returns
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<p>
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<b>Category: <a href="cat-028.htm" tppabs="http://www.ctyme.com/intr/cat-028.htm">
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Non-Traditional Input Devices</a>
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- <a href="int-21.htm" tppabs="http://www.ctyme.com/intr/int-21.htm">
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Int 21h</a>
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- <a href="alpha-p.htm" tppabs="http://www.ctyme.com/intr/alpha-p.htm">
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P</a>
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