170 lines
11 KiB
HTML
170 lines
11 KiB
HTML
<HTML>
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<TITLE>Int 21/AX=440Fh
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</TITLE>
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<META NAME="Description" CONTENT="
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Int 21/AX=440Fh - DOS 3.2+ - IOCTL - SET LOGICAL DRIVE MAP -
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AX = 440Fh
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BL = physical drive number (00h=default,01h=A:,etc))
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Return: CF set on error
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AX = error code (01h,0Fh) (see #01680 at AH=59h/BX=0000h)
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CF clear if successful
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drive now responds to next logical drive number
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Notes: maps logical drives to physical drives, similar to DOS's treatment of
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a single physical floppy drive as both A: and B:
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DR DOS 3.41-5.0 DRIVER.SYS does not support drive mapping and thus
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always returns an error on this function
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">
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<BODY BGCOLOR="#FFD0A0">
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<center>
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<h2>Int 21/AX=440Fh
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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>DOS 3.2+ - IOCTL - SET LOGICAL DRIVE MAP</font></h3>
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<PRE>
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AX = 440Fh
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BL = physical drive number (00h=default,01h=A:,etc))<br>
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<p><b>Return:</b><br>CF set on error
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AX = error code (01h,0Fh) <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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CF clear if successful
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drive now responds to next logical drive number
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</PRE>
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<p><b>Notes:</b>
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Maps logical drives to physical drives, similar to DOS's treatment of
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<PRE>
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<p><b>a single physical floppy drive as both A:</b><br>And B:.
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DR DOS 3.41-5.0 DRIVER.SYS does not support drive mapping and thus
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always returns an error on this function
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</PRE>
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<p><b>See Also:</b>
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<a href="rb-2907.htm" tppabs="http://www.ctyme.com/intr/rb-2907.htm">AX=440Eh</a> - <a href="rb-4411.htm" tppabs="http://www.ctyme.com/intr/rb-4411.htm">INT 2F/AX=122Bh</a>
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<p>
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<b>Category: <a href="cat-010.htm" tppabs="http://www.ctyme.com/intr/cat-010.htm">
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DOS Kernel</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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D</a>
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<td><a href="int.htm" tppabs="http://www.ctyme.com/intr/int.htm">Interrups</a></td>
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<td><a href="cat.htm" tppabs="http://www.ctyme.com/intr/cat.htm">Categories</a></td>
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<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
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