250 lines
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250 lines
13 KiB
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<TITLE>Int 21/AX=4402h
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Int 21/AX=4402h - WORKGRP.SYS - GET API ENTRY POINT -
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AX = 4402h
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BX = file handle for device NET$HLP$
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CX = 0008h
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DS:DX - buffer for entry point record (see #01485)
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Return: CF clear if successful
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AX = number of bytes actually read
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CF set on error
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AX = error code
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Program: WORKGRP.SYS is the portion of Microsoft's Workgroup Connection which
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permits communication with PCs running Windows for Workgroups or
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<h2>Int 21/AX=4402h
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<h3><font color=#C00040>WORKGRP.SYS - GET API ENTRY POINT</font></h3>
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<PRE>
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AX = 4402h
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BX = file handle for device "NET$HLP$"
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CX = 0008h
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DS:DX -> buffer for entry point record <a href="rb-2836.htm#Table1485" tppabs="http://www.ctyme.com/intr/rb-2836.htm#Table1485">(see #01485)</a><br>
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<p><b>Return:</b><br>CF clear if successful
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AX = number of bytes actually read
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CF set on error
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AX = error code
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</PRE>
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<p><b>Program:</b>
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WORKGRP.SYS is the portion of Microsoft's Workgroup Connection which
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permits communication with PCs running Windows for Workgroups or
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LAN Manager
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<p><b>See Also:</b>
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<a href="rb-2786.htm" tppabs="http://www.ctyme.com/intr/rb-2786.htm">AH=3Fh"WORKGRP.SYS"</a>
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<PRE>
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<p>
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Format of WORKGRP.SYS entry point record:
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<a name=table1485></a>
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Offset Size Description (Table 01485)
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00h WORD 3633h \ signature???
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02h WORD EF6Fh /
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04h DWORD address of entry point <a href="rb-2836.htm#Table1486" tppabs="http://www.ctyme.com/intr/rb-2836.htm#Table1486">(see #01486)</a>
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</PRE>
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<p><b>Note:</b>
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First four bytes of buffer must be 6Fh E9h 33h 36h on entry when using
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IOCTL rather than READ to get the entry point record
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<PRE>
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<p>
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<a name=table1486></a>
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(Table 01486)
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Call WORKGRP entry point with:.
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<p><b>STACK:</b><br>WORD function number (0000h-0009h)<br>
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<p><b>Return:</b><br>STACK unchanged
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</PRE>
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<p><b>See Also:</b>
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#01487 - #01488 - #01489 - #01490 - #01491 - #01492 - #01493 - #01494
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<PRE>
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<p>
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<a name=table1487></a>
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(Table 01487)
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Call WORKGRP function 00h with:.
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<p><b>STACK:</b><br>WORD 0000h (function "get ???")<br>
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<p><b>Return:</b><br>DX:AX -> data table
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<p>
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<a name=table1488></a>
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(Table 01488)
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Call WORKGRP function 01h with:.
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<p><b>STACK:</b><br>WORD 0001h (function "hook ???")<br>
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<p><b>Return:</b><br>STACK: DWORD pointer to ???
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WORD 0001h (function number)
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<p>
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<a name=table1489></a>
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(Table 01489)
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Call WORKGRP function 02h with:.
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<p><b>STACK:</b><br>WORD 0002h (function "unhook ???").
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???<br>
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<p><b>Return:</b><br>???
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<p>
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<a name=table1490></a>
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(Table 01490)
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Call WORKGRP function 03h with:.
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<p><b>STACK:</b><br>WORD 0003h (function "reenable printer port")
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WORD LPT port number<br>
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<p><b>Return:</b><br>???
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<p>
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<a name=table1491></a>
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(Table 01491)
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Call WORKGRP function 04h with:.
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<p><b>STACK:</b><br>WORD 0004h (function "disable printer port")
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WORD LPT port number<br>
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<p><b>Return:</b><br>???
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<p>
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<a name=table1492></a>
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(Table 01492)
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Call WORKGRP function 05h with:.
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<p><b>STACK:</b><br>WORD 0005h (function "???")
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???<br>
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<p><b>Return:</b><br>???
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<p>
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<a name=table1493></a>
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(Table 01493)
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Call WORKGRP function 06h with:.
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<p><b>STACK:</b><br>WORD 0006h (function "???")<br>
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<p><b>Return:</b><br>STACK unchanged
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AX = 0000h
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DX = 0000h
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<p>
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<a name=table1494></a>
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(Table 01494)
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Call WORKGRP functions 07h-09h with:.
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<p><b>STACK:</b><br>WORD 0007h-0009h (NOP functions)<br>
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<p><b>Return:</b><br>STACK unchanged
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AX = 0001h
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DX = 0000h
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</PRE>
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<p>
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<b>Category: <a href="cat-027.htm" tppabs="http://www.ctyme.com/intr/cat-027.htm">
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Network</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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W</a>
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