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oldlinux-files/docs/interrupts/int-html/rb-6138.htm
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<TITLE>Int 41
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Int 41 - Acorn BBC Master 512 - OSGBPB - MULTI-BYTE GET/PUT -
AL = function
01h put bytes sequentially
02h put bytes, ignoring sequential pointer
03h get bytes sequentially
04h get bytes, ignoring sequential pointer
05h get media title and boot option
06h get current device and directory
07h get current library and device
08h search directory
DS:BX - control block (see #03199)
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<h2>Int 41
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<h3><font color=#C00040>Acorn BBC Master 512 - OSGBPB - MULTI-BYTE GET/PUT</font></h3>
<PRE>
AL = function
01h put bytes sequentially
02h put bytes, ignoring sequential pointer
03h get bytes sequentially
04h get bytes, ignoring sequential pointer
05h get media title and boot option
06h get current device and directory
07h get current library and device
08h search directory
DS:BX -> control block <a href="rb-6138.htm#Table3199" tppabs="http://www.ctyme.com/intr/rb-6138.htm#Table3199">(see #03199)</a><br>
<p><b>Return:</b><br>CF clear if successful
CF set on error
AL = 00h if operation attempted
AL unchanged if unsupported function
</PRE>
<p><b>See Also:</b>
<a href="rb-6133.htm" tppabs="http://www.ctyme.com/intr/rb-6133.htm">INT 40"Acorn"</a> - <a href="rb-6162.htm" tppabs="http://www.ctyme.com/intr/rb-6162.htm">INT 42"Acorn"</a> - <a href="rb-6172.htm" tppabs="http://www.ctyme.com/intr/rb-6172.htm">INT 43"Acorn"</a>
<PRE>
<p>
Format of BBC Master control block:
<a name=table3199></a>
Offset Size Description (Table 03199)
00h BYTE file handle
01h DWORD pointer to data in either I/O processor or Tube processor
05h DWORD number of bytes to be transferred
09h DWORD transfer address
</PRE>
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