lostecho/oldlinux-files
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
af7120d204d37af256fa9bbca1572e91f89b8ef0
oldlinux-files/docs/interrupts/int-html/rb-4822.htm
gohigh 9912ec445d add directory docs
2024-02-19 00:23:35 -05:00

208 lines
13 KiB
HTML
Raw Blame History

<HTML>
<HEAD>
<TITLE>Int 2F/AX=4A10h/BX=0000h
</TITLE>
<META NAME="Description" CONTENT="
Int 2F/AX=4A10h/BX=0000h - SMARTDRV v4.00+ - INSTALLATION CHECK AND HIT RATIOS -
AX = 4A10h
BX = 0000h
CX = EBABh (v4.1+; see Note), and CX 0EDCh
Return: AX = BABEh if installed
DX:BX = cache hits
DI:SI = cache misses
CX = number of dirty cache elements
BP = version in BCD (4.10 = 0410h)
4.0 = 0400h (Windows 3.1)
4.01 = 0401h (MS-DOS 6.0, 1992/07/30)
">
<META NAME="robots" CONTENT="none">
</HEAD>
<BODY BGCOLOR="#FFD0A0">
<center>
<h2>Int 2F/AX=4A10h/BX=0000h
</h2>
</center><p>
<table border=1 cellpadding=3 cellspacing=1>
<td>
<a href="rb-4821.htm" tppabs="http://www.ctyme.com/intr/rb-4821.htm">
<img src="lup.gif" tppabs="http://graphics.ctyme.com/gif/lup.gif" border=0 alt=Prev></a>
<a href="rb-4823.htm" tppabs="http://www.ctyme.com/intr/rb-4823.htm">
<img src="ldown.gif" tppabs="http://graphics.ctyme.com/gif/ldown.gif" border=0 alt=Next></a>
<a href="javascript:if(confirm('http://www.ctyme.com/rbrown.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/rbrown.htm'" tppabs="http://www.ctyme.com/rbrown.htm">
<img src="lhome.gif" tppabs="http://graphics.ctyme.com/gif/lhome.gif" border=0 alt=Ralf Brown Page></a>
<td><a href="int.htm" tppabs="http://www.ctyme.com/intr/int.htm">Interrups</a></td>
<td><a href="cat.htm" tppabs="http://www.ctyme.com/intr/cat.htm">Categories</a></td>
<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
</td></table><p>
<p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
<h3><font color=#C00040>SMARTDRV v4.00+ - INSTALLATION CHECK AND HIT RATIOS</font></h3>
<PRE>
AX = 4A10h
BX = 0000h
CX = EBABh (v4.1+; see Note), and CX <> 0EDCh<br>
<p><b>Return:</b><br>AX = BABEh if installed
DX:BX = cache hits
DI:SI = cache misses
CX = number of dirty cache elements
BP = version in BCD (4.10 = 0410h)
4.0 = 0400h (Windows 3.1)
4.01 = 0401h (MS-DOS 6.0, 1992/07/30)
4.10 = 0410h (1992/11/11)
4.20 = 0420h
5.0 = 0500h (MS-DOS 6.2)
</PRE>
<p><b>Notes:</b>
Most of the SMARTDRV API, including this call, is supported by
PC-Cache v8.0 and recent versions of the Norton Caches.
The internal name for SMARTDRV is "BAMBI", hence the magic "BABE"..
If DBLSPACE.BIN is installed but SMARTDRV has not yet been installed,
then calls of this function with CX<>EBABh on entry cause
DBLSPACE.BIN to display the error message
"Cannot run SMARTDrive 4.0 with DoubleSpace" and abort the caller
with INT 21/AX=4C00h.
Since the Novell DOS 7 - DR-DOS 7.03 NWCACHE supports a similar
install check at this function, but the returned registers
contain different data, the caller must take the returned AX value
into account to ensure proper interpretation of the returned info.
The caller should ensure CX <> 0EDCh to avoid any interaction
with the NWCACHE and COMMAND.COM special case of CX=0EDCh.
Although this is an install check, NWCACHE always flushes delayed
writes to disk, when calling this function with CX<>0EDCh or while
/FLUSH:ON is active, but this is nothing to rely upon. The reason
for this could be to get more accurate statistics, while SMARTDRV
just takes a on-the-fly snapshot of the statistic vars..
The private NWCACHE/NLCACHE install check INT2Fh/D8C0h does not flush
to disk, and therefore can be used by callers that must ensure
the buffers aren't flushed on this function (e.g. alternative
command shells may need this to make their "flush before prompt"
feature configurable)..
The NWCACHE 0EDCh special case will most probably vanish with
future issues of NWCACHE (2.0+)..
SMARTDRV v3.x had a completely different API using IOCTL calls, which
was also supported by the Norton Caches
<p><b>BUG:</b>
Although DS and ES registers are listed as unmodified, some
releases of SMARTDRV seem to trash the DS register, at least the
MS-DOS 6.2+ KEYB takes care to preserve the DS register when calling
this function.
<p><b>See Also:</b>
<a href="rb-4824.htm" tppabs="http://www.ctyme.com/intr/rb-4824.htm">AX=4A10h/BX=0001h</a> - <a href="rb-4828.htm" tppabs="http://www.ctyme.com/intr/rb-4828.htm">AX=4A10h/BX=0004h</a> - <a href="rb-4829.htm" tppabs="http://www.ctyme.com/intr/rb-4829.htm">AX=4A10h/BX=0005h</a>
<p><b>See Also:</b>
<a href="rb-4831.htm" tppabs="http://www.ctyme.com/intr/rb-4831.htm">AX=4A10h/BX=0007h</a> - <a href="rb-4834.htm" tppabs="http://www.ctyme.com/intr/rb-4834.htm">AX=4A10h/BX=1234h</a> - <a href="rb-4835.htm" tppabs="http://www.ctyme.com/intr/rb-4835.htm">AX=4A11h/BX=0000h</a>
<p><b>See Also:</b>
<a href="rb-2828.htm" tppabs="http://www.ctyme.com/intr/rb-2828.htm">INT 21/AX=4402h"SMARTDRV"</a> - <a href="rb-2855.htm" tppabs="http://www.ctyme.com/intr/rb-2855.htm">INT 21/AX=4403h"SMARTDRV"</a>
<p>
<b>Category: <a href="cat-004.htm" tppabs="http://www.ctyme.com/intr/cat-004.htm">
Caches/Spoolers</a>
- <a href="int-2f-1.htm" tppabs="http://www.ctyme.com/intr/int-2F.htm">
Int 2Fh</a>
- <a href="alpha-s.htm" tppabs="http://www.ctyme.com/intr/alpha-s.htm">
S</a>
</b><p><p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
<table border=1 cellpadding=3 cellspacing=1>
<td>
<a href="rb-4821.htm" tppabs="http://www.ctyme.com/intr/rb-4821.htm">
<img src="lup.gif" tppabs="http://graphics.ctyme.com/gif/lup.gif" border=0 alt=Prev></a>
<a href="rb-4823.htm" tppabs="http://www.ctyme.com/intr/rb-4823.htm">
<img src="ldown.gif" tppabs="http://graphics.ctyme.com/gif/ldown.gif" border=0 alt=Next></a>
<a href="javascript:if(confirm('http://www.ctyme.com/rbrown.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/rbrown.htm'" tppabs="http://www.ctyme.com/rbrown.htm">
<img src="lhome.gif" tppabs="http://graphics.ctyme.com/gif/lhome.gif" border=0 alt=Ralf Brown Page></a>
<td><a href="int.htm" tppabs="http://www.ctyme.com/intr/int.htm">Interrups</a></td>
<td><a href="cat.htm" tppabs="http://www.ctyme.com/intr/cat.htm">Categories</a></td>
<td><a href="alpha.htm" tppabs="http://www.ctyme.com/intr/alpha.htm">Contents</a></td>
</td></table><p>
<!-- Bottom Link Start -->
<center>
<p><table border=1 bgcolor="#ffff99"><tr><td>
<table border=0 height=80>
<tr align=center><td width="65">
<a href="javascript:if(confirm('http://www.ctyme.com/sponsor.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/sponsor.htm'" tppabs="http://www.ctyme.com/sponsor.htm">
<img src="tip.gif" tppabs="http://graphics.ctyme.com/gif/tip.gif" ALT="Sponsors" height="40" width="40"></a>
<br><a href="javascript:if(confirm('http://www.ctyme.com/sponsor.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/sponsor.htm'" tppabs="http://www.ctyme.com/sponsor.htm">Shopping</a>
</td><td width="65">
<a href="javascript:if(confirm('http://talk.ctyme.com/webx.cgi?13@@.ee6b2be \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://talk.ctyme.com/webx.cgi?13@@.ee6b2be'" tppabs="http://talk.ctyme.com/webx.cgi?13@@.ee6b2be">
<img src="comment.gif" tppabs="http://graphics.ctyme.com/gif/comment.gif" ALT="Forum" height="40" width="40"></a>
<br><a href="javascript:if(confirm('http://talk.ctyme.com/webx.cgi?13@@.ee6b2be \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://talk.ctyme.com/webx.cgi?13@@.ee6b2be'" tppabs="http://talk.ctyme.com/webx.cgi?13@@.ee6b2be">Forum</a>
</td><td width="65">
<a href="javascript:if(confirm('http://www.ctyme.com/mail.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/mail.htm'" tppabs="http://www.ctyme.com/mail.htm">
<img src="mail.gif" tppabs="http://graphics.ctyme.com/gif/mail.gif" ALT="email" height="40" width="40"></a>
<br><a href="javascript:if(confirm('http://www.ctyme.com/mail.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/mail.htm'" tppabs="http://www.ctyme.com/mail.htm">EMail</a>
</td><td width="65">
<a href="javascript:if(confirm('http://www.ctyme.com/map.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/map.htm'" tppabs="http://www.ctyme.com/map.htm">
<img src="toc.gif" tppabs="http://graphics.ctyme.com/gif/toc.gif" ALT="Index" height="40" width="40"></a>
<br><a href="javascript:if(confirm('http://www.ctyme.com/map.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/map.htm'" tppabs="http://www.ctyme.com/map.htm">Index</a>
</td><td width="65">
<a href="javascript:if(confirm('http://www.ctyme.com/ \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/'" tppabs="http://www.ctyme.com/">
<img src="home.gif" tppabs="http://graphics.ctyme.com/gif/home.gif" ALT="Home" height="40" width="40"></a>
<br><a href="javascript:if(confirm('http://www.ctyme.com/ \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/'" tppabs="http://www.ctyme.com/">Home</a>
</td><td width="90">
<center>
<FORM ACTION="https://secure.paypal.com/cgi-bin/webscr" tppabs="https://secure.paypal.com/cgi-bin/webscr" METHOD="POST" traget="_blank">
<INPUT TYPE="hidden" NAME="cmd" VALUE="_xclick">
<INPUT TYPE="hidden" NAME="business" VALUE="marc@perkel.com">
<INPUT TYPE="hidden" NAME="return" VALUE="http://www.perkel.com">
<INPUT TYPE="hidden" NAME="item_name" VALUE="Donation To Support this Site">
<INPUT TYPE="hidden" NAME="no_intl" VALUE="1">
<INPUT TYPE="image" SRC="x-click-but7.gif" tppabs="http://images.paypal.com/images/x-click-but7.gif" vspace=9
NAME="submit" ALT="Make payments with PayPal - it's fast, free and secure!">
</FORM>
</td></tr></table></td></tr></table><p>
<center>
<p>
<a href="javascript:if(confirm('http://www.ctyme.com/hosting/index.htm \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address. \n\nDo you want to open it from the server?'))window.location='http://www.ctyme.com/hosting/index.htm'" tppabs="http://www.ctyme.com/hosting/index.htm" target="_blank">
<img src="ctymehost.gif" tppabs="http://graphics.ctyme.com/gif/ctymehost.gif"
border=3 height=60 width=468></a>
<p>
<!-- Ad End --->
</center>
<FORM ACTION="http://service.bfast.com/bfast/click" target="_blank">
<INPUT TYPE="hidden" NAME="siteid" VALUE="30472466" >
<INPUT TYPE="hidden" NAME="bfpage" VALUE="horizontal">
<INPUT TYPE="hidden" NAME="bfmid" VALUE="27253343" >
<INPUT TYPE="hidden" NAME="num" VALUE="30">
<table bgcolor=white border=3><tr><td>
<table bgcolor=white border=0>
<tr><td>
<IMG SRC="serve-bfmid=27253343&siteid=30472466&bfpage=horizontal.gif" tppabs="http://service.bfast.com/bfast/serve?bfmid=27253343&siteid=30472466&bfpage=horizontal" BORDER="0" WIDTH="1" HEIGHT="1" align=right NOSAVE >
<center><b>Search the web with Google</b></center>
</td></tr><tr><td>
<TABLE cellpadding=0 cellspacing=5 bgcolor="#FFFFFF">
<tr><td bgcolor="#0000cc"><IMG SRC="cleardot.gif" tppabs="http://www.google.com/images/cleardot.gif" height=1 border="0" ALT="Google"></td></tr><tr><td>
<IMG SRC="affiliate_logo.gif" tppabs="http://www.google.com/affiliates/affiliate_logo.gif" border="0" ALT="Google" align="center">
<INPUT TYPE=text name=q size=30 maxlength=255 value="">
<INPUT type=submit name=sa VALUE="Go">
</td></tr>
<tr><td bgcolor="#0000cc"><IMG SRC="cleardot.gif" tppabs="http://www.google.com/images/cleardot.gif" height=1 border="0" ALT="Google"></td></tr></TABLE>
</td></tr></table>
</tr></td></table>
</FORM>
</center>
<p><img src="rbline.gif" tppabs="http://graphics.ctyme.com/gif/rbline.gif" width="100%" alt="------"><p>
<!-- Bottom Link End -->
</BODY>
</HTML>
Reference in New Issue View Git Blame Copy Permalink