211 lines
13 KiB
HTML
211 lines
13 KiB
HTML
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<TITLE>Int 2F/AX=5600h
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<META NAME="Description" CONTENT="
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Int 2F/AX=5600h - INTERLNK - INSTALLATION CHECK -
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AX = 5600h
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DX = magic value FFFFh
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BL = instance number (00h = any, 01h = first loaded, etc.)
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(BH = 00h and CX = 0000h, see note)
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Return: AL = FFh if installed
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BL = instance number
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CX = version number (CL = major, CH = minor)
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DX = resident CS of driver, DX:0000h - header (see #02845)
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Notes: INTERLNK was derived from Sewell Development Corporation's FASTLYNX.
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Some Microsoft software explicitly clears the BH and CX registers
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<h2>Int 2F/AX=5600h
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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>INTERLNK - INSTALLATION CHECK</font></h3>
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<PRE>
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AX = 5600h
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DX = magic value FFFFh
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BL = instance number (00h = any, 01h = first loaded, etc.)
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(BH = 00h and CX = 0000h, see note)<br>
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<p><b>Return:</b><br>AL = FFh if installed
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BL = instance number
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CX = version number (CL = major, CH = minor)
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DX = resident CS of driver, DX:0000h -> header <a href="rb-4898.htm#Table2845" tppabs="http://www.ctyme.com/intr/rb-4898.htm#Table2845">(see #02845)</a>
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</PRE>
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<p><b>Notes:</b>
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INTERLNK was derived from Sewell Development Corporation's FASTLYNX..
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Some Microsoft software explicitly clears the BH and CX registers
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before calling this function.
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<p><b>BUG:</b>
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Reportedly, the MS-DOS INTERSRV program (though not INTERLNK) causes
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serious FAT corruption and data loss when run under Novell DOS 7.
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INTERSRV apparently checks for DR-DOS by testing the "OS"
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environment variable for the value "DRDOS", which is no longer
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correct for PalmDOS, Novell DOS, or OpenDOS. A workaround may be
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to explicitly set the OS variable to "DRDOS".
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<p><b>See Also:</b>
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<a href="rb-4899.htm" tppabs="http://www.ctyme.com/intr/rb-4899.htm">AX=5601h</a> - <a href="rb-4900.htm" tppabs="http://www.ctyme.com/intr/rb-4900.htm">AX=5602h</a> - <a href="rb-6641.htm" tppabs="http://www.ctyme.com/intr/rb-6641.htm">INT 60/AX=0000h</a>
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<PRE>
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<p>
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Format of Interlnk device driver header:
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<a name=table2845></a>
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Offset Size Description (Table 02845)
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00h DWORD pointer to next driver, offset=FFFFh if last driver
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04h WORD device attributes <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 #01647,#01648)
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06h WORD device strategy entry point
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08h WORD device interrupt entry point
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0Ah 8 BYTEs character device name "NUL2 "
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12h 165 BYTEs ???
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B7h 67 BYTEs fully qualified Interlnk filename
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FAh 6 BYTEs ???
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100h DWORD pointer back to Interlnk filename at offset B7h
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104h 8 BYTEs ???
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10Ch BYTE total number of redirected drives
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10Dh BYTE first local drive number (0=A:)
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10Eh BYTE printer redirection (0=no, 1=yes)
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10Fh BYTE ???
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110h 3 BYTEs LPT1...3 status (0FFh=invalid)
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113h 26 BYTEs remote drive number (0=A:, 0FEh=unused) (refer to note below)
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12Dh 26 BYTEs always 0FEh ???
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147h 26 BYTEs always 0FFh ???
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</PRE>
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<p><b>Note:</b>
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To obtain the remote drive number, subtract the value at offset 10Ch
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from the local drive number before indexing into the table at 113h
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<PRE>
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<p><b>(example:</b><br>If local drives F, G, H are remote drives C, F, E then
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the first three bytes at offset 113h are 02h, 05h, 04h).
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For each instance of Interlnk, an extra device driver is loaded, but
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all have the same device name NUL2
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</PRE>
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<p><b>See Also:</b>
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#01646 at INT 21/AH=52h
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<p>
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<b>Category: <a href="cat-033.htm" tppabs="http://www.ctyme.com/intr/cat-033.htm">
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Remote Control/File Access</a>
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- <a href="int-2f-1.htm" tppabs="http://www.ctyme.com/intr/int-2F.htm">
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Int 2Fh</a>
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I</a>
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