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oldlinux-files/docs/interrupts/int-html/rb-0108.htm
2024-02-19 00:23:35 -05:00

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<TITLE>Int 10/AH=0Fh
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Int 10/AH=0Fh - VIDEO - GET CURRENT VIDEO MODE -
AH = 0Fh
Return: AH = number of character columns
AL = display mode (see #00010 at AH=00h)
BH = active page (see AH=05h)
Notes: if mode was set with bit 7 set (no blanking), the returned mode will
also have bit 7 set
EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h
(monochrome) in all extended-row text modes
HP 200LX returns AL=07h (monochrome) if mode was set to AL=21h
and always 80 resp. 40 columns in all text modes regardless of
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<h2>Int 10/AH=0Fh
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<h3><font color=#C00040>VIDEO - GET CURRENT VIDEO MODE</font></h3>
<PRE>
AH = 0Fh<br>
<p><b>Return:</b><br>AH = number of character columns
AL = display mode <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 #00010 at AH=00h)
BH = active page (see AH=05h)
</PRE>
<p><b>Notes:</b>
If mode was set with bit 7 set ("no blanking"), the returned mode will
also have bit 7 set.
EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h
(monochrome) in all extended-row text modes.
HP 200LX returns AL=07h (monochrome) if mode was set to AL=21h
and always 80 resp. 40 columns in all text modes regardless of
current zoom setting (see AH=D0h).
When using a Hercules Graphics Card, additional checks are necessary:
<PRE>
<p><b>mode 05h:</b><br>If WORD 0040h:0063h is 03B4h, may be in graphics page 1
(as set by DOSSHELL and other Microsoft software)
<p><b>mode 06h:</b><br>If WORD 0040h:0063h is 03B4h, may be in graphics page 0
(as set by DOSSHELL and other Microsoft software)
<p><b>mode 07h:</b><br>If BYTE 0040h:0065h bit 1 is set, Hercules card is in
graphics mode, with bit 7 indicating the page (mode set by
Hercules driver for Borland Turbo C).
The Tandy 2000 BIOS is only documented as returning AL, not AH or BH
</PRE>
<p><b>See Also:</b>
<a href="rb-0069.htm" tppabs="http://www.ctyme.com/intr/rb-0069.htm">AH=00h</a> - <a href="rb-0091.htm" tppabs="http://www.ctyme.com/intr/rb-0091.htm">AH=05h</a> - <a href="rb-0133.htm" tppabs="http://www.ctyme.com/intr/rb-0133.htm">AX=10F2h</a> - <a href="rb-0158.htm" tppabs="http://www.ctyme.com/intr/rb-0158.htm">AX=1130h</a> - <a
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Video</a>
- <a href="int-10.htm" tppabs="http://www.ctyme.com/intr/int-10.htm">
Int 10h</a>
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