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oldlinux-files/docs/interrupts/int-html/rb-1757.htm
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<TITLE>Int 16/AH=03h
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Int 16/AH=03h - KEYBOARD - SET TYPEMATIC RATE AND DELAY -
AH = 03h
AL = subfunction
00h set default delay and rate (PCjr and some PS/2)
01h increase delay before repeat (PCjr)
02h decrease repeat rate by factor of 2 (PCjr)
03h increase delay and decrease repeat rate (PCjr)
04h turn off typematic repeat (PCjr and some PS/2)
05h set repeat rate and delay (AT,PS)
BH = delay value (00h = 250ms to 03h = 1000ms)
BL = repeat rate (00h=30/sec to 0Ch=10/sec [def] to 1Fh=2/sec)
">
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<h2>Int 16/AH=03h
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<h3><font color=#C00040>KEYBOARD - SET TYPEMATIC RATE AND DELAY</font></h3>
<PRE>
AH = 03h
AL = subfunction
00h set default delay and rate (PCjr and some PS/2)
01h increase delay before repeat (PCjr)
02h decrease repeat rate by factor of 2 (PCjr)
03h increase delay and decrease repeat rate (PCjr)
04h turn off typematic repeat (PCjr and some PS/2)
05h set repeat rate and delay (AT,PS)
BH = delay value (00h = 250ms to 03h = 1000ms)
BL = repeat rate (00h=30/sec to 0Ch=10/sec [def] to 1Fh=2/sec)
06h get current typematic rate and delay (newer PS/2s)
<p><b>Return:</b><br>BL = repeat rate (above)
BH = delay (above)<br>
<p><b>Return:</b><br>AH destroyed by many BIOSes
</PRE>
<p><b>Note:</b>
Use INT 16/AH=09h to determine whether some of the subfunctions are
supported
<p><b>See Also:</b>
<a href="rb-1769.htm" tppabs="http://www.ctyme.com/intr/rb-1769.htm">INT 16/AH=09h</a> - <a href="rb-1789.htm" tppabs="http://www.ctyme.com/intr/rb-1789.htm">AH=29h"HUNTER"</a> - <a href="rb-1790.htm" tppabs="http://www.ctyme.com/intr/rb-1790.htm">AH=2Ah"HUNTER"</a>
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Int 16h</a>
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