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<TITLE>Int 10/AH=08h
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Int 10/AH=08h - VIDEO - READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION -
AH = 08h
BH = page number (00h to number of pages - 1) (see #00010)
Return: AH = character's attribute (text mode only) (see #00014)
AH = character's color (Tandy 2000 graphics mode only)
AL = character
Notes: for monochrome displays, a foreground of 1 with background 0 is
underlined
the blink bit may be reprogrammed to enable intense background colors
using AX=1003h or by programming the CRT controller
the foreground intensity bit (3) can be programmed to switch between
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<h2>Int 10/AH=08h
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<h3><font color=#C00040>VIDEO - READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION</font></h3>
<PRE>
AH = 08h
BH = page number (00h to number of pages - 1) <a href="rb-0069.htm#Table10" tppabs="http://www.ctyme.com/intr/rb-0069.htm#Table10">(see #00010)</a><br>
<p><b>Return:</b><br>AH = character's attribute (text mode only) (see #00014)
AH = character's color (Tandy 2000 graphics mode only)
AL = character
</PRE>
<p><b>Notes:</b>
For monochrome displays, a foreground of 1 with background 0 is
underlined.
The blink bit may be reprogrammed to enable intense background colors
using AX=1003h or by programming the CRT controller.
The foreground intensity bit (3) can be programmed to switch between
character sets A and B on EGA and VGA cards, thus enabling 512
simultaneous characters on screen. In this case the bit's usual
function (intensity) is regularly turned off..
In graphics modes, only characters drawn with white foreground pixels
are matched by the pattern-comparison routine.
On the Tandy 2000, BH=FFh specifies that the current page should be
used.
Because of the IBM BIOS specifications, there may exist some clone
BIOSes which do not preserve SI or DI; the Novell DOS kernel
preserves SI, DI, and BP before many INT 10h calls to avoid problems
due to those registers not being preserved by the BIOS.
<p><b>BUG:</b>
Some IBM PC ROM BIOSes destroy BP when in graphics modes
<p><b>See Also:</b>
<a href="rb-0099.htm" tppabs="http://www.ctyme.com/intr/rb-0099.htm">AH=09h</a> - <a href="rb-0117.htm" tppabs="http://www.ctyme.com/intr/rb-0117.htm">AX=1003h</a> - <a href="rb-0139.htm" tppabs="http://www.ctyme.com/intr/rb-0139.htm">AX=1103h</a> - <a href="rb-0174.htm" tppabs="http://www.ctyme.com/intr/rb-0174.htm">AH=12h/BL=37h</a
<PRE>
<p>
Bitfields for character's display attribute:
<a name=table14></a>
Bit(s) Description (Table 00014)
7 foreground blink or (alternate) background bright (see also AX=1003h)
6-4 background color <a href="rb-0098.htm#Table15" tppabs="http://www.ctyme.com/intr/rb-0098.htm#Table15">(see #00015)</a>
3 foreground bright or (alternate) alternate character set (see AX=1103h)
2-0 foreground color <a href="rb-0098.htm#Table15" tppabs="http://www.ctyme.com/intr/rb-0098.htm#Table15">(see #00015)</a>
</PRE>
<p><b>See Also:</b>
#00026
<PRE>
<p>
<a name=table15></a>
(Table 00015)
Values for character color:.
Normal Bright
000b black dark gray
001b blue light blue
010b green light green
011b cyan light cyan
100b red light red
101b magenta light magenta
110b brown yellow
111b light gray white
</PRE>
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